MAX13253
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MAX13253

1A Spread-Spectrum Push-Pull Transformer Driver for Isolated Power Supplies

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Simplifies Isolated Power Designs

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $4.22
Features
  • Simple, Flexible Design
    • +3.0V to +5.5V Supply Range
    • Low RON 300mΩ (max) at 4.5V
    • Up to 90% Efficiency
    • Provides Up to 1A to the Transformer
    • Internal or External Clock Source
    • Internal Oscillator Frequency: 250kHz or 600kHz
    • Optional Spread-Spectrum Oscillation
    • -40°C to +125°C Temperature Range
  • Integrated System Protection
    • Fault Detection and Indication
    • Overcurrent Limiting
    • Undervoltage Lockout
    • Thermal Shutdown
  • Saves Space on Board
    • Small 10-Pin TDFN Package (3mm x 3mm)
Additional Details
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The MAX13253 is a 1A push-pull transformer driver designed to provide a simple solution for low-EMI isolated power supplies. The MAX13253 has an internal oscillator and operates from a single +3.0V to +5.5V supply. The transformer’s secondary-to-primary winding ratio defines the output voltage, allowing selection of virtually any isolated output voltage with galvanic isolation.

The MAX13253 features an integrated oscillator driving a pair of N-channel power switches. The driver includes pin-selectable spread-spectrum oscillation and a well-controlled slew rate to reduce EMI. The MAX13253 can optionally be driven by an external clock to further manage EMI. Internal circuitry guarantees a fixed 50% duty cycle to prevent DC current flow through the transformer, regardless of which clock source is used.

The MAX13253 operates with up to 1A of continuous current and features integrated protection including fault detection, overcurrent protection, and thermal shutdown.

The MAX13253 includes a low-current shutdown mode to reduce the overall supply current to less than 5µA (max) when the driver is disabled.

The MAX13253 is available in a small, 10-pin, (3mm x 3mm) TDFN package and is specified over the -40°C to +125°C temperature range.

Applications

  • Isolated Analog Front Ends
  • Isolated Fieldbus Interfaces
  • Isolated USB Power
  • Medical Equipment
  • Power Meter Data Interfaces
Part Models 2
1ku List Price Starting From $4.22

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX13253ATB+
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MAX13253ATB+T
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Software and Part Ecosystem

Software and Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX13253EVKIT

Evaluation Kit for the MAX13253

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MAX13253EVKIT

Evaluation Kit for the MAX13253

Evaluation Kit for the MAX13253

Features and Benefits

  • 3.0V to 5.5V Operating Voltage Range
  • Up to 90% Efficiency
  • Push-Pull Rectified Output
  • Configurable Bipolar Outputs or Full-Wave Rectifier
  • Internal or External Clock Operation
  • Selectable Spread-Spectrum Option for Controlled EMI
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The MAX13253 evaluation kit (EV kit) is a fully assembled and tested PCB that demonstrates the MAX13253 low-EMI push-pull transformer driver. The EV kit operates from a single 3.0V to 5.5V supply and the on-board 1CT:1.3CT turns-ratio transformer sets the output voltage.
The EV kit provides up to 90% overall efficiency at 5V with up to 4.5W output power using a push-pull isolated DC-DC converter. Undervoltage lockout, current limiting, and thermal shutdown provide for a robust isolated supply. The surface-mount transformer provides galvanic isolation with the output powered from a push-pull rectifier circuit, reducing the output-voltage ripple.
The EV kit circuit is configured as a push-pull rectifier, with an output voltage that follows the input voltage. The EV kit is also configurable for other topologies including bipolar outputs and full-wave rectification.

Applications

  • Isolated Analog Front Ends
  • Isolated Fieldbus Interfaces
  • Isolated USB Power
  • Medical Equipment
  • Power Meter Data Interfaces
Tools & Simulations

Tools & Simulations 1

Reference Designs

Reference Designs 2

MAXREFDES46

4-Channel Analog Input/Output

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MAXREFDES46

4-Channel Analog Input/Output

4-Channel Analog Input/Output

Features and Benefits

Features

  • Programmable high-accuracy current/voltage output
  • High accuracy
  • ±10V, 0 to 10V, and 4–20mA Inputs
  • Current output drives 0 to 1kΩ
  • Voltage output drives loads down to 1kΩ
  • Extensive error reporting
  • Isolated power and data
  • Device drivers
  • Example C source code

Competitive Advantages

  • Flexibility
  • System safety
  • Small solution size

Applications

  • PLCs
  • DCS
  • Distributed I/Os
  • Embedded systems
  • Industrial control and automation
View Detailed Reference Design external link

Design & Integration Tools

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ZIP

9.88 M

maxrefdes18 image 1

High Accuracy Analog Current/Voltage Output

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MAXREFDES18

High Accuracy Analog Current/Voltage Output

High Accuracy Analog Current/Voltage Output

Features and Benefits

Applications

  • PLCs
  • DCS
  • Distributed I/Os
  • Embedded systems
  • Industrial control and automation
  • Industrial sensors

Competitive Advantages

  • Flexibility
  • System safety
  • Small solution size
  • Low cost

Features

  • Programmable high-accuracy current/voltage output
  • Current output drives 0 to 1kΩ
  • Voltage output drives loads down to 1kΩ
  • Extensive error reporting
  • Isolated power and data
  • Small printed circuit board (PCB) area
  • Device drivers
  • Example C source code
  • Pmod™-compatible form factor
View Detailed Reference Design external link

Design & Integration Tools

pdf icon

ZIP

40.21 M

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