MAX17690

PRODUCTION

60V, No-Opto Isolated Flyback Controller

Compact, Cost-Effective, and Easy-to-Implement Isolated DC-DC Controller

Data Sheet (Rev. 7) Product Selection Table
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Overview

  • 4.5V to 60V Input Voltage Range
  • No Optocoupler or Third Winding Required to Derive Feedback Signal Across Isolation Boundary
  • 2A/4A Peak Source/Sink Gate Drive Currents
  • 50kHz to 250kHz Programmable Switching Frequency
  • Input EN/UVLO Feature
  • Input Overvoltage Protection
  • Programmable Soft-Start
  • Hiccup-Mode Short-Circuit Protection
  • Thermal Shutdown Protection
  • -40°C to 125°C Operating Temperature Range
  • Space-Saving, 16-Pin 3 x 3 TQFN Package
MAX17690
60V, No-Opto Isolated Flyback Controller
MAX17690: Application Circuit MAX17690/V Application Circuit MAX17690/V Pin Configuration
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Documentation

Data Sheet 2

Technical Articles 2

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Switching Regulators & Controllers 1
MAX17596
PRODUCTION Peak-Current-Mode Controllers for Flyback and Boost Regulators
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Tools & Simulations

ADI Power Studio™ Designer

ADI Power Studio™ Designer is the next-generation tool for IC-level, power supply design, guiding engineers to faster, validated solutions.

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SIMPLIS Models 4

Evaluation Kits

MAX17690EVKITB

Evaluation Kit for the MAX17690

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Features and Benefits

  • 18V to 36V Input Range
  • Isolated Output: 5V/1A DC
  • Compact Design with High-Frequency (180kHz) Switching
  • Minimum Number of External Components
  • 85.8% Peak Efficiency
  • Low-Cost Flyback Design
  • Galvanic Isolation up to 1875VAC
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17690B evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the operation of an isolated 5W no-opto flyback DC-DC converter. This circuit uses a MAX17690 in a 16-pin TQFN package with an exposed pad. The data sheet must be read in conjunction with this quick start guide for demo circuit.

The EV kit output is configured for an isolated +5V and provides up to 1A of output current. The device switches at a 200kHz switching frequency. The transformer provides the galvanic isolation between input and output, up to 1875VAC.

Applications

  • Industrial and Telecom Applications
  • Isolated Flyback Converters
  • PLC I/O Modules
  • Wide-Range DC-Input Isolated Power Supplies

MAX17690EVKITD

Evaluation Kit for the MAX17690 No-Opto Flyback with Secondary-Side Synchronous Rectification

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Features and Benefits

  • 18V to 36V Input Range
  • Isolated Output: 5V/3A DC
  • Compact Design with High Frequency (200kHz) Switching
  • No Optocoupler/Third Winding Required to Derive Feedback Signal
  • 89.6% Peak Efficiency
  • Galvanic Isolation up to 1500VRMS
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17690D evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the operation of an isolated 15W no-opto flyback DC-DC converter with secondary-side synchronous rectification. This circuit is implemented using the MAX17690, a no-opto, flyback controller in a 16-pin TQFN package with an exposed pad. The synchronous rectification on the secondaryside is enabled by replacing the secondary diode with a MOSFET to achieve 89.6% efficiency. The circuit uses the MAX17606, a secondary-side synchronous rectifier driver in a 6-pin SOT23 package for driving the secondary-side MOSFET.

The EV kit output is configured for an isolated +5V and provides up to 3A of output current. The EV kit is programmed to operate at a 200kHz switching frequency. The transformer provides the galvanic isolation between input and output, up to 1500VRMS. The EV kit regulates the output voltage within ±5% over the line, load, and temperature without using the auxiliary winding/optocoupler for output voltage feedback.

Applications

  • Industrial and Telecom Applications
  • Isolated Flyback Converters
  • PLC I/O Modules
  • Wide-Range DC-Input Isolated Power Supplies

MAX17690EVKITC

Evaluation Kit for the MAX17690 In Dual-Output Configuration

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Features and Benefits

  • 18V to 36V Input Range
  • Isolated Output: ±15V/200mA On Each Output
  • Compact Design with High Frequency (100kHz) Switching
  • Minimum Number of External Components
  • 90.5% Peak Efficiency
  • Low-Cost Flyback Design
  • Galvanic Isolation up to 1500VRMS
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17690EVKITC is a fully assembled and tested circuit board that demonstrates the working of an isolated 6W no-opto flyback DC-DC converter. This circuit uses a MAX17690 in a 16-pin TQFN package with an exposed pad. The data sheet must be read in conjunction with this quick start guide for demo circuit.

The EV kit output is configured for an isolated ±5V and provides up to 200mA of output current on each output. The MAX17690 switches at a 100kHz switching frequency. The transformer provides the galvanic isolation between input and output, up to 1500VRMS.

Applications

  • Industrial and Telecom Applications
  • Isolated Flyback Converters
  • PLC I/O Modules
  • Wide-Range DC-Input Isolated Power Supplies

MAX17690EVKITE

Evaluation Kit for MAX17690

Buy Now View Details

Features and Benefits

  • 18V to 36V Input Range
  • Isolated Output: 3.3V/5A DC
  • Compact Design with High Frequency (200kHz) Switching
  • No Optocoupler/Third Winding Required to Derive Feedback Signal
  • 84.7% Peak Efficiency
  • Galvanic Isolation up to 1500VRMS
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17690E evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the operation of an isolated 16.5W no-opto flyback DC-DC converter with secondary-side synchronous rectification. This circuit is implemented using the MAX17690, a no-opto, flyback controller in a 16-pin TQFN package with an exposed pad. The synchronous rectification on the secondary side is enabled by replacing the secondary diode with a MOSFET to achieve 84.7% efficiency. The circuit uses the MAX17606, a secondary-side synchronous rectifier driver in a 6-pin SOT23 package for driving the secondary-side MOSFET.

The EV kit output is con gured for an isolated +3.3V and provides up to 5A of output current. The EV kit is programmed to operate at a 200kHz switching frequency. The transformer provides the galvanic isolation between input and output, up to 1500VRMS. The EV kit regulates the output voltage within ±5% over the line, load, and temperature without using the auxiliary winding/optocoupler for output voltage feedback.

Applications

  • Industrial and Telecom Applications
  • Isolated Flyback Converters
  • PLC I/O Modules
  • Wide-Range DC-Input Isolated Power Supplies

MAX17690EVKITA

Evaluation Kit for the MAX17690

Buy Now View Details

Features and Benefits

  • 18V to 36V Input Range
  • Isolated Output: 5V/1A DC
  • Compact Design with High Frequency (150kHz) Switching
  • No Optocoupler/Third Winding Required to Derive Feedback Signal
  • 90% Peak Efficiency
  • Galvanic Isolation up to 1875VRMS
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Minimum Load for ±5% Regulation: 1% of Full-Load

Product Details

The MAX17690A evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the operation of an isolated 5W no-opto flyback DC-DC converter with secondary-side synchronous rectification. This circuit is implemented using the MAX17690, a no-opto, flyback controller in a 16-pin TQFN package with an exposed pad. The synchronous rectification on the secondary side is enabled by replacing the secondary diode with a MOSFET to achieve 89.5% efficiency. The circuit uses the MAX17606, a secondary-side synchronous rectifier driver in a 6-pin SOT23 package for driving the secondary-side MOSFET.

The EV kit output is configured for an isolated +5V and provides up to 1A of output current. The EV kit is programmed to operate at a 150kHz switching frequency. The transformer provides the galvanic isolation between input and output, up to 1875VRMS. The EV kit regulates the output voltage within ±5% over the line, load, and temperature without using the auxiliary winding/optocoupler for output voltage feedback.

Applications

  • Industrial and Telecom Applications
  • Isolated Flyback Converters
  • PLC I/O Modules
  • Wide-Range DC-Input Isolated Power Supplies

MAX17690EVKITJ

Evaluation Kit for the MAX17690 in 12V Output-Voltage Application

Buy Now View Details

Features and Benefits

  • 40V to 80V Input Range, Suitable for PoE Applications
  • Isolated Output: 12V/2.1A DC
  • Compact Design with High Frequency (100kHz) Switching
  • 89.9% Full-Load Efficiency
  • Minimum Number of External Components
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17690EVKITJ# evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the operation of an isolated 25W No-Opto Flyback DC-DC converter. This circuit uses MAX17690 in a 16-pin TQFN package with an exposed pad. The IC data sheet provides a complete description of the part and should be read in conjunction with this EV kit data sheet prior to operating the EV kit.

The MAX17690EVKITJ# EV kit output is configured for an isolated +12V and provides up to 2.1A of output current over a 40V to 80V input range, suitable for power-overethernet (PoE) applications. The EV kit regulates the output voltage within ±8% over line, load, and temperature without using the auxiliary winding/optocoupler for outputvoltage feedback.

Applications

  • Industrial and Telecom Applications
  • Isolated Flyback Converters
  • PLC I/O Modules
  • Wide-Range DC-Input Isolated Power Supplies

MAX17690EVKITG

Evaluation Kit for the MAX17690

Buy Now View Details

Features and Benefits

  • 4.5V to 5.5V Input Range
  • Isolated Output: 5V/1A DC
  • Compact Design with High-Frequency (180kHz) Switching
  • Minimum Number of External Components
  • 86.4% Peak Efficiency
  • Low-Cost Flyback Design
  • Galvanic Isolation up to 1500VAC
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17690G evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the operation of an isolated 5W no-opto flyback DC-DC converter. This circuit uses a MAX17690 in a 16-pin TQFN package with an exposed pad. The data sheet must be read in conjunction with this quick start guide for demo circuit.

The EV kit output is configured for an isolated +5V and provides up to 1A of output current. The device switches at a 180kHz switching frequency. The transformer provides the galvanic isolation between input and output, up to 1500VAC.

Applications

  • Industrial and Telecom Applications
  • Isolated Flyback Converters
  • PLC I/O Modules
  • Wide-Range DC-Input Isolated Power Supplies
MAX17690EVKITB
Evaluation Kit for the MAX17690
MAX17690EVKITD
Evaluation Kit for the MAX17690 No-Opto Flyback with Secondary-Side Synchronous Rectification
MAX17690EVKITC
Evaluation Kit for the MAX17690 In Dual-Output Configuration
MAX17690EVKITE
Evaluation Kit for MAX17690
MAX17690EVKITA
Evaluation Kit for the MAX17690
MAX17690EVKITJ
Evaluation Kit for the MAX17690 in 12V Output-Voltage Application
MAX17690EVKITG
Evaluation Kit for the MAX17690

Reference Designs

MAXREFDES1175
MAXREFDES1175
MAXREFDES1175 Circuits from the lab

PoE Powered Device and 5V/1.4A No-Opto Flyback DC-DC Converter Using the MAX17690 and MAX5969B

View Detailed Reference Design

Features and Benefits

  • IEEE 802.3af/at Compliance
  • Thermally Enhanced, 3mm × 3mm, 10-Pin TDFN Package (MAX5969B)
  • 30V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm × 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
MAXREFDES1100
MAXREFDES1100
MAXREFDES1100 Circuits from the lab

Miniature, 12V/500mA, No-Opto Flyback DC-DC Converter with 90% Efficiency Using MAX17690

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm × 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
MAXREFDES1095
MAXREFDES1095
MAXREFDES1095 Circuits from the lab

Miniature, 12V/500mA, Synchronous, No-Opto Flyback DC-DC Converter with 92.8% Efficiency Using MAX17690 and MAX17606

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm × 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes1089
maxrefdes1089
MAXREFDES1089 Circuits from the lab

Miniature, 12V/250mA, Synchronous, No-Opto Flyback DC-DC Converter with 91.7% Efficiency Using MAX17690 and MAX17606

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range

maxrefdes1093
maxrefdes1093
MAXREFDES1093 Circuits from the lab

Miniature, 5V/1A, Synchronous, No-Opto Flyback DC-DC Converter with 92% Efficiency Using MAX17690 and MAX17606

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes1094
maxrefdes1094
MAXREFDES1094 Circuits from the lab

Miniature, 12V/500mA, Synchronous, No-Opto Flyback DC-DC Converter with 91.9% Efficiency Using MAX17690 and MAX17606

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
MAXREFDES1091
MAXREFDES1091
MAXREFDES1091 Circuits from the lab

Miniature, 12V/250mA, No-Opto Flyback DC-DC Converter with 91% Efficiency Reference Design Using MAX17690

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
MAXREFDES138
MAXREFDES138
MAXREFDES138 - Connected to MAXREFDES98 eval board
PWR LED lights up indicating MAXREFDES138 works
MAXREFDES138 Circuits from the lab

No-Opto Isolated, PoE, 48V to 12V, 12W Flyback Power Supply

View Detailed Reference Design

Features and Benefits

  • 36V to 57V input voltage
  • Compact and flexible
  • Minimal external components
  • Robust operation in adverse environments
  • 12.5W output capacity
  • ±3% output accuracy
maxrefdes1090
maxrefdes1090
MAXREFDES1090 Circuits from the lab

Miniature, 12V/250mA, No-Opto Flyback DC-DC Converter with 91.3% Efficiency Using the MAX17690

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes1092
maxrefdes1092
MAXREFDES1092 Circuits from the lab

Miniature, 5V/1A, Synchronous, No-Opto Flyback DC-DC Converter with 91.5% Efficiency

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes120
maxrefdes120
MAXREFDES120 Circuits from the lab

Isolated 24V to 5V–12.5W No-Opto Flyback Power Supply

View Detailed Reference Design

Features and Benefits

Features

  • Functional insulation
  • Compact and flexible
  • Minimal external components
  • Robust operation in adverse industrial environments
  • 5V output at 2.5A
  • ±5% output accuracy

Competitive Advantages

  • Rapid prototyping
  • Accelerated design time
  • Cool system operation
MAXREFDES1012
MAXREFDES1012
Figure 2. Isolated flyback converter topology with typical waveforms.
MAXREFDES1012 Circuits from the lab

Miniature, 5.3V/2A, Synchronous, No-Opto Flyback DC-DC Converter with 91.4% Efficiency Using MAX17690 and MAX17606

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
MAXREFDES1010
MAXREFDES1010
MAXREFDES1010 Circuits from the lab

24V/300mA, No-Opto Isolated Flyback DC-DC Converter Reference Design

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm × 3mm TQFN Package
  • -40℃ to +125℃ Operating Temperature Range
maxrefdes1088
maxrefdes1088
MAXREFDES1088 Circuits from the lab

Miniature, 12V/250mA, Synchronous, No-Opto Flyback DC-DC Converter with 91.9% Efficiency Using MAX17690 and MAX17606

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes119
maxrefdes119
maxrefdes119fig01
MAXREFDES119 Circuits from the lab

Isolated 24V to 5V, 9W No-Opto Flyback Power Supply

View Detailed Reference Design

Features and Benefits

  • Functional insulation
  • Compact and flexible
  • Minimal external components
  • Robust operation in adverse industrial environments
  • 5V 1.8A with 20% over range current
  • ±5% output accuracy
maxrefdes1086
maxrefdes1086
MAXREFDES1086 Circuits from the lab

Miniature, 5V/500mA, Synchronous, No-Opto Flyback DC-DC Converter with 91.4% Efficiency

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes1087
maxrefdes1087
MAXREFDES1087 Circuits from the lab

Miniature, 5V/500mA, Synchronous, No-Opto Flyback DC-DC Converter with 91.4% Efficiency

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes128fig02
maxrefdes128fig02
maxrefdes128fig03
maxrefdes128fig04
MAXREFDES128 Circuits from the lab

No-Opto Isolated, PoE, 48V to 5V, 12.5W Flyback Power Supply

View Detailed Reference Design

Features and Benefits

  • 36V to 57V input voltage
  • Compact and flexible
  • Minimal external components
  • Robust operation in adverse environments
  • 12.5W output capacity
  • ±3% output accuracy
MAXREFDES1014
MAXREFDES1014
MAXREFDES1014 Circuits from the lab

48V/80mA, No-Opto Isolated Flyback DC-DC Converter Using MAX17690

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
MAXREFDES1040
MAXREFDES1040
MAXREFDES1040 Circuits from the lab

59.4W, No-Opto Flyback DC-DC Converter Using MAX17690

View Detailed Reference Design

Features and Benefits

  • No Optocoupler or Third Winding Required
  • 2A/4A Peak Source/Sink Gate Drive Currents
  • 50kHz to 250kHz Programmable Switching Frequency
  • Input EN/UVLO Feature
  • Input Overvoltage Protection
  • Programmable Soft-Start
  • Hiccup-Mode Short-Circuit Protection
  • Thermal Shutdown Protection
  • -40°C to +125°C Operating Temperature Range
  • Space-Saving, 3mm x 3mm, 16-Pin TQFN Package
MAXREFDES1022
MAXREFDES1022
MAXREFDES1022 Circuits from the lab

5V/2A, Synchronous No-Opto Isolated Flyback DC-DC Converter

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
MAXREFDES1149
MAXREFDES1149
MAXREFDES1149 Circuits from the lab

12V/1A, Synchronous, No-Opto Isolated PoE DC-DC Converter Using MAX17690, MAX17606, MAX5969A

View Detailed Reference Design

Features and Benefits

  • Features
  • IEEE® 802.3af/at Compliance
  • 2-Event Classification
  • No Schottky-Synchronous Operation for High Efficiency and Reduced Cost
  • Ultra-Compact Layout
  • Peak Efficiency > 88%
  • 3mm × 3mm, 16-Pin TQFN (MAX17690), 6-Lead SOT23 (MAX17606), and Thermally Enhanced, 3mm × 3mm, 10-Pin TDFN (MAX5969A) Packages
maxrefdes124fig01
maxrefdes124fig01
MAXREFDES124 Circuits from the lab

Isolated 12V to 5.5V 22W No-Opto Flyback Power Supply

View Detailed Reference Design

Features and Benefits

Features

  • Functional insulation
  • Compact and flexible
  • Minimal external components
  • 5kV of isolation for medical and other high-isolation applications
  • ±5% output accuracy

Competitive Advantages

  • Rapid prototyping
  • Accelerated design time
  • Cool system operation
MAXREFDES1101
MAXREFDES1101
MAXREFDES1101 Circuits from the lab

Miniature, 12V/500mA, No-Opto Flyback DC-DC Converter with 90% Efficiency

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes1177 figure 1
maxrefdes1177 figure 1
MAXREFDES1177 Circuits from the lab

PoE Powered Device and 12V/600mA No-Opto Flyback DC-DC Converter Using the MAX17690 and MAX5969B

View Detailed Reference Design

Features and Benefits

  • IEEE 802.3af/at Compliance
  • Thermally Enhanced, 3mm × 3mm, 10-Pin TDFN Package (MAX5969B)
  • 30V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm × 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes1148 figure 1
maxrefdes1148 figure 1
MAXREFDES1148 Circuits from the lab

MAXREFDES1148: 5V/2.5A, Synchronous, No-Opto Isolated PoE DC-DC Converter Using MAX17690, MAX17606, MAX5969A

View Detailed Reference Design

Features and Benefits

  • IEEE® 802.3af/at Compliance
  • 2-Event Classification
  • No Schottky-Synchronous Operation for High Efficiency and Reduced Cost
  • Ultra-Compact Layout
  • Peak Efficiency > 88%
  • 3mm × 3mm, 16-Pin TQFN (MAX17690), 6-Lead SOT23 (MAX17606), and Thermally Enhanced, 3mm × 3mm, 10-Pin TDFN (MAX5969A) Packages
MAXREFDES1002
MAXREFDES1002
MAXREFDES1002 Circuits from the lab

6W, Synchronous No-Opto Flyback DC-DC Converter

View Detailed Reference Design

Features and Benefits

  • No Optocoupler or Third Winding Required
  • 2A/4A Peak Source/Sink Gate Drive Currents
  • 50kHz to 250kHz Programmable Switching Frequency
  • Input EN/UVLO Feature
  • Input Overvoltage Protection
  • Programmable Soft-Start
  • Hiccup-Mode Short-Circuit Protection
  • Thermal Shutdown Protection
  • -40℃ to +125℃ Operating Temperature Range
  • Space-Saving, 3mm x 3mm, 16-Pin TQFN Package
Figure 1. MAXREFDES1102 hardware.
Figure 1. MAXREFDES1102 hardware.
MAXREFDES1102 Circuits from the lab

Miniature, 24V/250mA, No-Opto Flyback DC-DC Converter with 92% Efficiency Using the MAX17690

View Detailed Reference Design

Features and Benefits

Key Features

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
Figure 1. MAXREFDES1194 hardware.
Figure 1. MAXREFDES1194 hardware.
MAXREFDES1194 Circuits from the lab

Five-Output, No-Opto Flyback DC-DC Converter Using the MAX17690

View Detailed Reference Design

Features and Benefits

Features

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes1176
maxrefdes1176
MAXREFDES1176 Circuits from the lab

PoE Powered Device and Synchronous 5V/1.4A No-Opto Flyback DC-DC Converter Using the MAX17690, MAX17606, and MAX5969B

View Detailed Reference Design

Features and Benefits

  • IEEE® 802.3af/at Compliance
  • Thermally Enhanced, 3mm × 3mm, 10-Pin TDFN Package (MAX5969B)
  • 30V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
MAXREFDES1173
MAXREFDES1173
MAXREFDES1173 Circuits from the lab

MAXREFDES1173: Miniature, 12V/1A, No-Opto Flyback DC-DC Converter with 91.3% Efficiency Using the MAX17690

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm × 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
MAXREFDES1309
MAXREFDES1309
MAXREFDES1309 Circuits from the lab

Miniature, 15V/1.5A, No-Opto Isolated Flyback AC-DC Converter with Peak Efficiency of 87%, Using the MAX17690

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V input voltage range
  • Programmable switching frequency from 50kHz to 250kHz
  • Programmable input enable/undervoltage lockout (UVLO) feature.
  • Programmable input overvoltage protection Adjustable soft-start 2A/4A peak source/sink gate drive capability
  • Hiccup mode short-circuit protection Fast cycle-by-cycle peak current limit
  • Thermal shutdown protection Space-saving, 16-Pin, 3mm × 3mm TQFN package
  • -40°C to +125°C operating temperature range

MAXREFDES1104
MAXREFDES1104
MAXREFDES1104 Circuits from the lab

MAXREFDES1104: Miniature, 5V/2A, Synchronous, No-Opto Flyback DC-DC Converter with 90% Efficiency Using MAX17690 and MAX17606

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes1276 board
maxrefdes1276 board
MAXREFDES1276 Circuits from the lab

Ultra-Miniature, 24V/700mA, No-Opto Isolated Flyback DC-DC Converter with Peak Efficiency of 91.5%, Using the MAX17690

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V input voltage range
  • Programmable switching frequency from 50kHz to 250kHz
  • Programmable input enable/UVLO feature
  • Programmable input overvoltage protection
  • Adjustable soft-start
  • 2A/4A peak source/sink gate drive capability
  • Hiccup mode short-circuit protection
  • Fast cycle-by-cycle peak current limit
  • Thermal shutdown protection
  • Space-saving, 16-Pin, 3mm x 3mm TQFN package
  • -40°C to +125°C operating temperature range
Figure 1. MAXREFDES1098 hardware.
Figure 1. MAXREFDES1098 hardware.
MAXREFDES1098 Circuits from the lab

Miniature, 24V/500mA, No-Opto Flyback DC-DC Converter with 92% Efficiency Using the MAX17690

View Detailed Reference Design

Features and Benefits

Features

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
MAXREFDES1172
MAXREFDES1172
MAXREFDES1172 Circuits from the lab

Miniature, 12V/1A, No-Opto Flyback DC-DC Converter with 90% Efficiency Using the MAX17690

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm × 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes1178 image 1
maxrefdes1178 image 1
MAXREFDES1178 Circuits from the lab

PoE Powered Device and Synchronous 12V/600mA No-Opto Flyback DC-DC Converter Using the MAX17690, MAX17606, and MAX5969B

View Detailed Reference Design

Features and Benefits

  • IEEE® 802.3af/at Compliance
  • Thermally Enhanced, 3mm × 3mm, 10-Pin TDFN Package (MAX5969B)
  • 30V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
maxrefdes1106 image 1
maxrefdes1106 image 1
MAXREFDES1106 Circuits from the lab

Miniature, 12V/1A, Synchronous, No-Opto Flyback DC-DC Converter with 92% Efficiency Using MAX17690 and MAX17606

View Detailed Reference Design

Features and Benefits

  • 4.5V to 60V Input Voltage Range
  • Programmable Switching Frequency from 50kHz to 250kHz
  • Programmable Input Enable/UVLO Feature
  • Programmable Input Overvoltage Protection
  • Adjustable Soft-Start
  • 2A/4A Peak Source/Sink Gate Drive Capability
  • Hiccup Mode Short-Circuit Protection
  • Fast Cycle-by-Cycle Peak Current Limit
  • Thermal Shutdown Protection
  • Space-Saving, 16-Pin, 3mm x 3mm TQFN Package
  • -40°C to +125°C Operating Temperature Range
MAXREFDES1175
PoE Powered Device and 5V/1.4A No-Opto Flyback DC-DC Converter Using the MAX17690 and MAX5969B
MAXREFDES1175
MAXREFDES1100
Miniature, 12V/500mA, No-Opto Flyback DC-DC Converter with 90% Efficiency Using MAX17690
MAXREFDES1100
MAXREFDES1095
Miniature, 12V/500mA, Synchronous, No-Opto Flyback DC-DC Converter with 92.8% Efficiency Using MAX17690 and MAX17606
MAXREFDES1095
MAXREFDES1089
Miniature, 12V/250mA, Synchronous, No-Opto Flyback DC-DC Converter with 91.7% Efficiency Using MAX17690 and MAX17606
maxrefdes1089
MAXREFDES1093
Miniature, 5V/1A, Synchronous, No-Opto Flyback DC-DC Converter with 92% Efficiency Using MAX17690 and MAX17606
maxrefdes1093
MAXREFDES1094
Miniature, 12V/500mA, Synchronous, No-Opto Flyback DC-DC Converter with 91.9% Efficiency Using MAX17690 and MAX17606
maxrefdes1094
MAXREFDES1091
Miniature, 12V/250mA, No-Opto Flyback DC-DC Converter with 91% Efficiency Reference Design Using MAX17690
MAXREFDES1091
MAXREFDES138
No-Opto Isolated, PoE, 48V to 12V, 12W Flyback Power Supply
MAXREFDES138
MAXREFDES138 - Connected to MAXREFDES98 eval board
PWR LED lights up indicating MAXREFDES138 works
MAXREFDES1090
Miniature, 12V/250mA, No-Opto Flyback DC-DC Converter with 91.3% Efficiency Using the MAX17690
maxrefdes1090
MAXREFDES1092
Miniature, 5V/1A, Synchronous, No-Opto Flyback DC-DC Converter with 91.5% Efficiency
maxrefdes1092
MAXREFDES120
Isolated 24V to 5V–12.5W No-Opto Flyback Power Supply
maxrefdes120
MAXREFDES1012
Miniature, 5.3V/2A, Synchronous, No-Opto Flyback DC-DC Converter with 91.4% Efficiency Using MAX17690 and MAX17606
MAXREFDES1012
Figure 2. Isolated flyback converter topology with typical waveforms.
MAXREFDES1010
24V/300mA, No-Opto Isolated Flyback DC-DC Converter Reference Design
MAXREFDES1010
MAXREFDES1088
Miniature, 12V/250mA, Synchronous, No-Opto Flyback DC-DC Converter with 91.9% Efficiency Using MAX17690 and MAX17606
maxrefdes1088
MAXREFDES119
Isolated 24V to 5V, 9W No-Opto Flyback Power Supply
maxrefdes119
maxrefdes119fig01
MAXREFDES1086
Miniature, 5V/500mA, Synchronous, No-Opto Flyback DC-DC Converter with 91.4% Efficiency
maxrefdes1086
MAXREFDES1087
Miniature, 5V/500mA, Synchronous, No-Opto Flyback DC-DC Converter with 91.4% Efficiency
maxrefdes1087
MAXREFDES128
No-Opto Isolated, PoE, 48V to 5V, 12.5W Flyback Power Supply
maxrefdes128fig02
maxrefdes128fig03
maxrefdes128fig04
MAXREFDES1014
48V/80mA, No-Opto Isolated Flyback DC-DC Converter Using MAX17690
MAXREFDES1014
MAXREFDES1040
59.4W, No-Opto Flyback DC-DC Converter Using MAX17690
MAXREFDES1040
MAXREFDES1022
5V/2A, Synchronous No-Opto Isolated Flyback DC-DC Converter
MAXREFDES1022
MAXREFDES1149
12V/1A, Synchronous, No-Opto Isolated PoE DC-DC Converter Using MAX17690, MAX17606, MAX5969A
MAXREFDES1149
MAXREFDES124
Isolated 12V to 5.5V 22W No-Opto Flyback Power Supply
maxrefdes124fig01
MAXREFDES1101
Miniature, 12V/500mA, No-Opto Flyback DC-DC Converter with 90% Efficiency
MAXREFDES1101
MAXREFDES1177
PoE Powered Device and 12V/600mA No-Opto Flyback DC-DC Converter Using the MAX17690 and MAX5969B
maxrefdes1177 figure 1
MAXREFDES1148
MAXREFDES1148: 5V/2.5A, Synchronous, No-Opto Isolated PoE DC-DC Converter Using MAX17690, MAX17606, MAX5969A
maxrefdes1148 figure 1
MAXREFDES1002
6W, Synchronous No-Opto Flyback DC-DC Converter
MAXREFDES1002
MAXREFDES1102
Miniature, 24V/250mA, No-Opto Flyback DC-DC Converter with 92% Efficiency Using the MAX17690
Figure 1. MAXREFDES1102 hardware.
MAXREFDES1194
Five-Output, No-Opto Flyback DC-DC Converter Using the MAX17690
Figure 1. MAXREFDES1194 hardware.
MAXREFDES1252
Miniature, 14.5V/1.2A, No-Opto Flyback DC-DC Converter with 91.7% Efficiency Using MAX17690
Figure 1. MAXREFDES1252 hardware.
MAXREFDES1176
PoE Powered Device and Synchronous 5V/1.4A No-Opto Flyback DC-DC Converter Using the MAX17690, MAX17606, and MAX5969B
maxrefdes1176
MAXREFDES1173
MAXREFDES1173: Miniature, 12V/1A, No-Opto Flyback DC-DC Converter with 91.3% Efficiency Using the MAX17690
MAXREFDES1173
MAXREFDES1309
Miniature, 15V/1.5A, No-Opto Isolated Flyback AC-DC Converter with Peak Efficiency of 87%, Using the MAX17690
MAXREFDES1309
MAXREFDES1253
Miniature 17V, 0.75A No Opto Flyback DC to DC Converter Using the MAX17690
maxrefdes1253 figure 1
MAXREFDES1104
MAXREFDES1104: Miniature, 5V/2A, Synchronous, No-Opto Flyback DC-DC Converter with 90% Efficiency Using MAX17690 and MAX17606
MAXREFDES1104
MAXREFDES1276
Ultra-Miniature, 24V/700mA, No-Opto Isolated Flyback DC-DC Converter with Peak Efficiency of 91.5%, Using the MAX17690
maxrefdes1276 board
MAXREFDES1098
Miniature, 24V/500mA, No-Opto Flyback DC-DC Converter with 92% Efficiency Using the MAX17690
Figure 1. MAXREFDES1098 hardware.
MAXREFDES1172
Miniature, 12V/1A, No-Opto Flyback DC-DC Converter with 90% Efficiency Using the MAX17690
MAXREFDES1172
MAXREFDES1178
PoE Powered Device and Synchronous 12V/600mA No-Opto Flyback DC-DC Converter Using the MAX17690, MAX17606, and MAX5969B
maxrefdes1178 image 1
MAXREFDES1244
Miniature, 5V/1.2A, No-Opto Flyback DC-DC Converter with 88% Efficiency Using MAX17690
maxrefdes1244 image 1
MAXREFDES1106
Miniature, 12V/1A, Synchronous, No-Opto Flyback DC-DC Converter with 92% Efficiency Using MAX17690 and MAX17606
maxrefdes1106 image 1

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