Overview

The ISL6440 is a high-performance, dual-output PWM controller optimized for converting wall adapter, battery or network intermediate bus DC input supplies into the system supply voltages required for a wide variety of applications. Each output is adjustable down to 0. 8V. The two PWMs are synchronized 180o out of phase reducing the RMS input current and ripple voltage. The ISL6440 incorporates several protection features. An adjustable overcurrent protection circuit monitors the output current by sensing the voltage drop across the lower MOSFET. Hiccup mode overcurrent operation protects the DC/DC components from damage during output overload/short circuit conditions. Each PWM has an independent logic-level shutdown input (SD1 and SD2). A single PGOOD signal is issued when soft-start is complete on both PWM controllers and their outputs are within 10% of the set point. Thermal shutdown circuitry turns off the device if the junction temperature exceeds +150°C.

  • Wide Input Supply Voltage Range
  • 5.6V to 24V
  • 4.5V to 5.6V
  • Two Independently Programmable Output Voltages
  • Switching Frequency 300kHz
  • Out of Phase PWM Controller Operation
  • Reduces Required Input Capacitance and Power Supply Induced Loads
  • No External Current Sense Resistor
  • Uses Lower MOSFET's rDS(ON)
  • Programmable Soft-Start
  • Extensive Circuit Protection Functions
  • PGOOD
  • UVLO
  • Overcurrent
  • Overtemperature
  • Independent Shutdown for Both PWMs
  • Excellent Dynamic Response
  • Voltage Feed-Forward with Current Mode Control
  • Pb-Free Plus Anneal Available (RoHS Compliant)
  • Power Supplies with Two Outputs
  • xDSL Modems/Routers
  • DSP, ASIC, and FPGA Power Supplies
  • Set-Top Boxes
  • Dual Output Supplies for DSP, Memory, Logic, µP Core and I/O
  • Telecom Systems

Documentation

Title Type Date
PDF683 KB 简体中文
Datasheet
PDF509 KB
Application Note
PDF397 KB
Application Note
PDF388 KB
End Of Life Notice
PDF398 KB
Product Change Notice
PDF268 KB
Product Change Notice
PDF846 KB
White Paper
PDF295 KB
White Paper

Design & Development

Software & Tool Pages

Title Type Company
iSim:PE Offline Simulation TooliSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.Downloads: Simulator Renesas

Software Downloads

Title Type Date
PDF388 KB
End Of Life Notice

Boards & Kits

Models

Title Type Date
SXSCH162 KB
Model - Other

Support