MAX17576

PRODUCTION

4.5V to 60V, 4A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

A High-Efficiency, High-Voltage, Synchronous Step-Down DC-DC Converter with Integrated MOSFETs

Data Sheet (Rev. 3) Product Selection Table
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Overview

  • Reduces External Components and Total Cost
    • No Schottky-Synchronous Operation
    • Internal Compensation for Any Output Voltage
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input
    • Adjustable Output Voltage Range from 0.9V up to 90% of VIN
    • 100kHz to 2.2MHz Adjustable Switching Frequency with External Clock Synchronization
  • Reduces Power Dissipation
    • Peak Efficiency of 94.8%
    • PFM and DCM Modes Enable Enhanced Light-Load Efficiency
    • Auxiliary Bootstrap Supply (EXTVCC) for Improved Efficiency
    • 2.8µA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup Mode Overload Protection and Auto-Retry Startup
    • Adjustable Soft-Start
    • Built-In Output-Voltage Monitoring with Active-Low RESET
    • Programmable EN/UVLO Threshold
    • Monotonic Startup Into Prebiased Output Load
    • Overtemperature Protection
    • Wide -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range

The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power supply solutions. The MAX17576, high-efficiency, high-voltage, Himalaya synchronous step-down DC-DC converter with integrated MOSFETs operates over an input voltage range of 4.5V to 60V. The converter can deliver up to 4A current. Output voltage is programmable from 0.9V up to 90% of VIN. The feedback voltage regulation accuracy over -40°C to +125°C is ±0.9%. Built-in compensation across the output-voltage range eliminates the need for external compensation components.

The MAX17576 features a peak-current-mode control architecture. The device can operate either in constantfrequency based pulse-width modulation (PWM) or pulsefrequency modulation (PFM), or discontinuous-conduction mode (DCM) control schemes. A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates an enable/input undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired input voltage level. The MAX17576 offers a low minimum on time that allows high switching frequencies and a small solution size.

The MAX17576 is available in a 24-pin (4mm x 5mm) TQFN-EP package. Simulation models are available.

Applications

  • Industrial Control Power Supplies
  • General Purpose Point-of-Load
  • Distributed Supply Regulation
  • Base Station Power Supplies
  • Wall Transformer Regulation
  • High-Voltage, Single-Board Systems
MAX17576
4.5V to 60V, 4A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
MAX17576: Typical Application Circuit
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Documentation

Data Sheet 1

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Software Resources

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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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Evaluation Kits

MAX17576EVKITA

Evaluation Kit for the MAX17576 3.3V Output-Voltage Application

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Features and Benefits

  • Operates from a 4.5V to 60V Input Supply
  • 3.3V Output Voltage
  • Up to 4A Output Current
  • 350kHz Switching Frequency
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Adjustable Soft-Start Time
  • MODE/SYNC Pin to Select Either PWM, PFM, or DCM Mode
  • Open-Drain Active-Low RESET Output
  • External Clock Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17576EVKITA# evaluation kit (EV kit) provides a proven design to evaluate the MAX17576 high-voltage, high-efficiency, synchronous step-down DC-DC converter. The EV kit is preset for 3.3V output at load currents up to 4A and features a 350kHz switching frequency for optimum efficiency and component size. The EV kit features adjustable input undervoltage lockout, adjustable soft-start, open-drain active-low RESET signal, and external clock synchronization. The EV kit also provides a good layout example, which is optimized for thermal performance. For more details about the device features and benefits, refer to the MAX17576 IC data sheet.

Applications

  • Base Station Power Supplies
  • Distributed Supply Regulation
  • General Purpose Point-of-Load
  • High-Voltage, Single-Board Systems
  • Industrial Control Power Supplies
  • Wall Transformer Regulation

MAX17576EVKITB

Evaluation Kit for the MAX17576 5V Output-Voltage Application

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Features and Benefits

  • Operates from a 6.5V to 60V Input Supply
  • 5V Output Voltage
  • Up to 4A Output Current
  • 350kHz Switching Frequency
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Adjustable Soft-Start Time
  • MODE/SYNC Pin to Select Either PWM, PFM, or DCM Mode
  • Open-Drain Active-Low RESET Output
  • External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested
  • CISPR-22 Class B Compliant

Product Details

The MAX17576EVKITB# output evaluation kit (EV kit) provides a proven design to evaluate the MAX17576 high-voltage, high-efficiency, synchronous step-down DC-DC converter. The EV kit is preset for 5V output at load currents up to 4A and features a 350kHz switching frequency for optimum efficiency and component size. The EV kit features adjustable input undervoltage lockout, adjustable soft-start, open-drain active-low RESET signal, and external frequency synchronization. The EV kit also provides a good layout example, which is optimized for conducted, radiated EMI and thermal performance. For more details about the IC benefits and features, refer to the MAX17576 IC data sheet.

Applications

  • Base Station Power Supplies
  • Distributed Supply Regulation
  • General Purpose Point-of-Load
  • High-Voltage, Single-Board Systems
  • Industrial Control Power Supplies
  • Wall Transformer Regulation
MAX17576EVKITA
Evaluation Kit for the MAX17576 3.3V Output-Voltage Application
MAX17576EVKITB
Evaluation Kit for the MAX17576 5V Output-Voltage Application

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