MAXM17545

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4.5V to 42V, 1.7A High-Efficiency, DC-DC Step-Down Power Module with Integrated Inductor

Highly Integrated DC-DC Power Module Enables Ease of Design and Small-Solution Footprint

Data Sheet (Rev. 2) Product Selection Table
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Overview

  • Reduces Design Complexity, Manufacturing Risks, and Time-to-Market
    • Integrated Switching Power Supply Controller and Dual-MOSFET Power Switches
    • Integrated Inductor
    • Integrated Compensation Components
    • Integrated Thermal-Fault Protection
    • Integrated Peak Current Limit
  • Saves Board Space in Space-Constrained Applications
    • Complete Integrated Step-Down Power Supply in a Single Package
    • Small Profile 9mm x 15mm x 2.8mm SiP Package
    • Simplified PCB Design with Minimal External BOM Components
  • Offers Flexibility for Power-Design Optimization
    • Wide Input Voltage Range from 4.5V to 42V
    • Output-Voltage Adjustable Range from 0.9V to 12V
    • Adjustable Frequency with External Frequency Synchronization (100kHz to 1.8MHz)
    • Soft-Start Programmable
    • PWM, PFM, or DCM Current-Mode Control
    • Optional Programmable EN/UVLO
  • Operates Reliably in Adverse Industrial Environments
    • Integrated Thermal Fault Protection
    • Hiccup Mode Overload Protection
    • Active-Low RESET/ Output-Voltage Monitoring
    • Wide Industrial Ambient Operating Temperature Range (-40°C to +125°C)/ Junction Temperature Range (-40°C to +150°C)
    • Complies with CISPR22(EN55022) Class B Conducted and Radiated Emissions

The Himalaya series of voltage regulator ICs and power modules, and chargers enable cooler, smaller, and simpler power supply solutions. The MAXM17545 is an easy-to-use, Himalaya step-down power module that combines a switching power supply controller, dual n-channel MOSFET power switches, fully shielded inductor, and the compensation components in a low-profile, thermally-efficient, system-in-package (SiP). The device operates over a wide input voltage range of 4.5V to 42V and delivers up to 1.7A continuous output current with excellent line and load regulation over an output voltage range of 0.9V to 12V. The device only requires five external components to complete the total power solution. The high level of integration significantly reduces design complexity, manufacturing risks, and offers a true plug-and-play power supply solution, reducing time-to-market.

The device can be operated in the pulse-width modulation (PWM), pulse-frequency modulation (PFM), or discontinuous conduction mode (DCM) control schemes.

The MAXM17545 is available in a low-profile, highly thermal-emissive, compact, 29-pin 9mm x 15mm x 2.8mm SiP package that reduces power dissipation in the package, while enhancing efficiency. The package is easily soldered onto a printed circuit board and suitable for automated circuit board assembly. The device can operate over a wide industrial temperature range from -40°C to +125°C.

Applications

  • Base Station Point-of-Load Regulator
  • Distributed Supply Regulation
  • FPGA and DSP Point-of-Load Regulator
  • HVAC and Building Control
  • Industrial Power Supplies
MAXM17545
4.5V to 42V, 1.7A High-Efficiency, DC-DC Step-Down Power Module with Integrated Inductor
MAXM17545: Typical Application Circuit
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 2

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Tools & Simulations

EE-Sim Power® Tools 1

The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.

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SIMPLIS Models 1

Evaluation Kits

MAXM17545EVKIT

Evaluation Kit for MAXM17545 3.3V Output

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Features and Benefits

  • Highly Integrated Solution with Integrated Shield Inductor
  • Wide 4.5V to 42V Input Range
  • Preset 3.3V Output with a Fixed Resistor-Divider on FB (Feedback Pin)
  • Programmable Output-Voltage Feature (0.9V to 12V)
  • Up to 1.7A Output Current
  • High 91.2% Efficiency (VIN = 12V, VOUT = 3.3V at 0.73A)
  • 400kHz Switching Frequency
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Adjustable Soft-Start Time
  • Selectable PWM, PFM, or DCM Mode
  • Open-Drain Active-Low RESET Output
  • External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Low-Profile, Surface-Mount Components
  • Lead(Pb)-Free and RoHS Compliant
  • Fully Assembled and Tested

Product Details

The MAXM17545 evaluation kit (EV kit) is a demonstration circuit of MAXM17545 high-voltage, high-efficiency, current mode scheme, synchronous step-down DC-DC switching power module. The EV kit is designed for a 3.3V output and delivers up to 1.7A load current from a wide input- voltage range of 4.5V to 42V. The EV kit switches at an optimal 400kHz switching frequency to allow the use of small component-sizes, helping to minimize solution-size while maintaining high-performance. The EV kit provides a precision-enable input, an open-drain active-low RESET output signal, and external frequency synchronization to provide a simple and reliable startup sequence and eliminate beat frequency between regulators. The EV kit also includes optional component footprints to program different output voltages, an adjustable input undervoltage-lockout, and a soft-start time to control inrush current during startup. The MAXM17545 IC data sheet provides a complete description of the part that should be read in conjunction with this data sheet prior to modifying the demo circuit.

Applications

  • Base Station Point-of-Load Regulator
  • Distributed Supply Regulation
  • FPGA and DSP Point-of-Load Regulator
  • HVAC and Building Control
  • Industrial Power Supplies
MAXM17545EVKIT
Evaluation Kit for MAXM17545 3.3V Output

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