MAX20414

PRODUCTION

2.2MHz Sync Boost and Step-Down Converters

Small Automotive PMIC for Infotainment & ADAS Applications

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • Multiple Functions for Small Size
    • Synchronous 750mA Boost Converter
      • Fixed from 3.8V to 8.5V in 100mV Steps
    • Synchronous Buck Converter Up to 3A
      • Factory-Configurable Output Voltage from 0.8V to 3.8V in 25mV Steps
      • Resistor-Adjustable
    • 3.0V to 5.5V Operating Supply Voltage
    • 2.2MHz Operation
    • 93% ±3% Undervoltage Threshold
    • 107% ±3% Overvoltage Threshold
    • Individual EN_ Inputs and Active-Low RESET_ Outputs
  • High-Precision
    • ±2% Output-Voltage Accuracy (OUT1) and ±1.5% Output-Voltage Accuracy (OUT2)
    • Good Load-Transient Performance
  • Robust for the Automotive Environment
    • Current Mode, Forced-PWM and Skip Operation
    • Overtemperature and Short-Circuit Protection
    • 4mm × 4mm 24-Pin TQFN
    • -40°C to +125°C Automotive Temperature Range

The MAX20414 is a high-efficiency, two-output, low-voltage DC-DC converter. OUT1 boosts the input supply up to 8.5V at up to 750mA, while a synchronous step-down converter (OUT2) operates from a 3.0V to 5.5V input voltage range and provides a 0.8V to 3.8V output voltage range at up to 3A. The boost converter achieves ±2% and the buck converter achieves ±1.5% output error over load, line, and temperature range.

The IC features a 2.2MHz fixed-frequency pulse-width modulation (PWM) mode for better noise immunity and load-transient response, and a pulse-frequency modulation mode (skip) for increased efficiency during light-load operation. The 2.2MHz frequency operation allows for the use of all-ceramic capacitors and minimizes external components footprint. The programmable spread-spectrum frequency modulation minimizes radiated electromagnetic emissions. Integrated low RDS(ON) switches improve efficiency at heavy loads and make the layout a much simpler task with respect to discrete solutions.

The IC is offered with either a factory-preset or resistor-adjustable output voltage on the step-down converter. The boost converter output voltage is factory-preset. Other features include soft-start, overcurrent, and over-temperature protections. This high-efficiency two-output low-voltage DC-DC converter is available in a lead(Pb)-free, 24-pin TQFN package (see the Ordering Information table for options).

APPLICATIONS

  • ADAS
  • Infotainment
  • SOC Power
MAX20414
2.2MHz Sync Boost and Step-Down Converters
MAX20414 Circuit Diagram
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Documentation

Data Sheet 1

Design Note 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

MAX20414EVKIT

Evaluation Kit for the MAX20414

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Features and Benefits

  • 3V to 5.5V Operating Supply Voltage
  • 5V at 500mA Synchronous Boost Converter (OUT1)
  • 1.25V at 3A Synchronous Buck Converter (OUT2)
  • SYNC Mode Select Input for Forced-PWM (FPWM), Skip Mode Selection, or External Frequency Synchronization
  • Individual Active-Low RESET_ Outputs
  • Minimized External Components
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX20414 evaluation kit (EV kit) is a fully assembled and tested PCB that demonstrates the MAX20414 power-management IC (PMIC). The EV kits include two high-efficiency, low-voltage DC-DC converters. OUT1 boosts a 3.3V input to 5V at up to 500mA, while the OUT2 step-down converter provides adjustable output voltages down to 0.8V at up to 3A. The 2.2MHz switching-frequency operation allows for the use of all-ceramic capacitors and minimizes external components.

The EV kit features two on/off jumper controls and two reset outputs (active-low RESET1, active-low RESET2) to indicate output status for each converter. It also provides a SYNC input to select the operating mode (forced-PWM, skip, or external frequency synchronization).

Applications

  • ADAS
  • Infotainment
  • SOC Power
MAX20414EVKIT
Evaluation Kit for the MAX20414

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