MAX17521

PRODUCTION

60V, 1A, Dual-Output, High-Efficiency, Synchronous Step-Down DC-DC Converter

Industry's First 60V, 1A Dual Step-Down DC-DC Converter with Integrated MOSFETs

Data Sheet (Rev. 2) Product Selection Table
Part Models
2
1ku List Price
Starting From $3.87
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Part Details

  • Reduces External Components and Total Cost
    • No Schottky—Synchronous Operation
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input
    • Each Output Adjustable From 0.9V to 92%VIN
    • Pin-Selectable 560kHz or 300kHz Switching Frequency
    • Independent Input Voltage Pin for Each Output
  • Reduces Power Dissipation
    • Peak Efficiency > 90%
    • PFM Mode Enables Enhanced Light-Load Efficiency
    • 1μA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup Mode Overload Protection
    • Adjustable Soft-Start Pin for Each Output
    • Built-In Output Voltage Monitoring with Active-Low RESET for Each Output
    • Adjustable EN/UVLO Threshold for Each Output
    • Monotonic Startup Into Prebiased Load
    • Overtemperature Protection
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range
MAX17521
60V, 1A, Dual-Output, High-Efficiency, Synchronous Step-Down DC-DC Converter
MAX17521: Block Diagram
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Documentation

Data Sheet 1

Reliability Data 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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SIMPLIS Models 1

Evaluation Kits

MAX17521EVKIT

Evaluation Kit for MAX17521

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Features and Benefits

  • Operates from a 7V to 60V Input Supply
  • Dual-Output Voltage: 3.3V and 5V
  • Up to 1A Output Current
  • Pin-Selectable Switching Frequency
  • Enable/UVLO Input, Resistor-Programmable UVLO Threshold
  • Mode-Selection Pin for Each Output to Select Between PWM and PFM Modes
  • Adjustable Soft-Start Time for Each Output
  • Open-Drain Active-Low RESET_ Signals for Each Output
  • External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17521 evaluation kit (EV kit) provides a proven design to evaluate the MAX17521 dual high-efficiency, high-voltage, synchronous step-down DC-DC converter. The EV kit generates 3.3V and 5V output voltages at load currents up to 1A from a 7V to 60V input supply. The EV kit features a switching-frequency selector pin and individual mode-of-operation selector pins, enable/under-voltage-lockout (EN/UVLO) pins, programmable soft-start pins, and open-drain active-low RESET_ signals for each output.

Applications

  • CPU, DSP, or FPGA Power
  • Distributed Supply Regulation
  • General-Purpose Point of Load
  • Industrial Control Power Supplies

MAX17521EVKITE

Evaluation Kit for the MAX17521 in 5V and 3.3V Output-Voltage Application

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Features and Benefits

  • Operates from a 7V to 60V Input Supply
  • Dual-Output Voltage: 5V and 3.3V
  • Up to 1A Output Current per Converter
  • 560kHz Switching Frequency
  • EN/UVLO Input, Resistor-Programmable UVLO Threshold
  • Mode Selection Jumper to Select Between PWM and PFM Modes
  • Capacitor Programmable Soft-Start Time
  • External Clock Synchronization Input
  • Open-Drain Active-Low RESET Output
  • Overcurrent Protection
  • Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR32(EN55032) Class B Conducted and Radiated Emissions

Product Details

The MAX17521EVKITE# evaluation kit (EV kit) provides a proven design to evaluate the MAX17521 high-efficiency, high-voltage, Himalaya synchronous step-down dual DC-DC converter. The EV kit is preset to generate 5V and 3.3V output voltages, at load currents up to 1A per converter. The switching frequency of the EV kit is preset to 560kHz for optimum efficiency and component size. The EV kit features programmable enable and input undervoltage lockout (EN/UVLO), programmable soft-start (SS), open-drain status (active-low RESET) output and external clock synchronization (SYNC). The EV kit also provides 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 MAX17521 IC data sheet.

Applications

  • CPU, DSP, or FPGA Power
  • Distributed Supply Regulation
  • General-Purpose Point of Load
  • Industrial Control Power Supplies
MAX17521EVKIT
Evaluation Kit for MAX17521
MAX17521EVKITE
Evaluation Kit for the MAX17521 in 5V and 3.3V Output-Voltage Application

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