Power & Power Management

Overview

Description

The ISL91302B is a highly efficient, dual or single output, synchronous multiphase buck switching regulator that can deliver up to 5A per phase continuous output current. The ISL91302B features four integrated power stages and has the capability to assign its power stages to either output. This flexibility allows seamless design-in for a wide range of applications where dual, triple, or quad phase outputs are needed, such as CPU and GPU core power mobile applications. The ISL91302B features integrated low ON-resistance MOSFETs, programmable PWM frequency, and automatic diode emulation, which maximizes efficiency while minimizing the external component count and solution size. Using Renesas’s proprietary R5 modulator technology, the ISL91302B delivers a highly robust power solution capable of ultra-fast transient response, excellent loop stability, and seamless DCM/CCM transitions without requiring external compensation. The ISL91302B is widely configurable through the factory OTP settings. Available features which can be used include: • SPI or I2C interface • External signal telemetry with an internal ADC • Dynamic Voltage Scaling (DVS) with selectable slew rate

Features

  • Dual output 3+1 or 2+2, or single output 4-phase
  • 2.5V to 5.5V supply voltage
  • 5A per phase output current capability
  • Small solution size (7x10 mm2)
  • 4 phase design requires only 12 components
  • High efficiency (94% peak)
  • Low IQ in low power mode
  • Supports 50A/μs per phase transients with <150μF nominal output capacitance
  • Voltage, current, and temperature telemetry through integrated ADC plus auxiliary inputs
  • ±0.7% system accuracy with remote voltage sensing
  • OTP Programmable PWM frequency from 2MHz to 6MHz
  • I2C and SPI programmable output from 0.3V to 2.0V
  • Independent Dynamic Voltage Scaling (DVS) for each output
  • Soft-start and fault detection (UV, OV, OC, OT), short circuit protection
  • 2.551mmx 3.670mm 54 ball WLCSP with 0.4mm pin pitch

Applications

  • Smart phones and tablets
  • FPGA and ASIC power
  • Industrial MPU power
  • Human machine interface

Documentation

Title Type Date
PDF3.07 MB
Datasheet
PDF592 KB
Application Note
PDF509 KB
Application Note
PDF397 KB
Application Note
PDF650 KB
Application Note
PDF387 KB
Application Note
PDF349 KB
Application Note
PDF432 KB
Other

Design & Development

Software & Tools

Software & Tools

Title Type Company
PowerNavigator SoftwareRenesas' PowerNavigator™ software allows simple configuration and monitoring of multiple Digital-DC devices using a PC with a USB interface. Software Package Renesas

Boards & Kits

Boards & Kits

Models