ISL91302B

Request Full Datasheet

Dual/Single Output Power Management IC

Product Status: Mass Production

OVERVIEW

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 I2 C interface
• External signal telemetry with an internal ADC
• Dynamic Voltage Scaling (DVS) with selectable slew rate

KEY 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

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL91302B
Basic Information
Production Status
Mass Production
# of Outputs
2
Topology [Rail 1]
Buck
Input Voltage Min (V) [Rail 1]
2.5
Input Voltage Max (V) [Rail 1]
5.5
Output Voltage Min (V) [Rail 1]
0.3
Output Voltage Max (V) [Rail 1]
2
Output Current Max (A) [Rail 1]
20
IQ [Rail 1]
1 µA
Qualification Level
Standard
Peak Efficiency (%)
94
POR
Yes
SYNCH Capability
No
Control Type
Current Mode
Switching Frequency Range (MHz)
4 MHz
Temperature Range
-40 to +85

Design Resources and Tools

Selection Tool

 PowerCompass Online Tool

The PowerCompass™ tool helps you find Renesas parts that match your requirements, performs system analysis & more.

Design

Design Tool

 PowerNavigator Software

Configure and monitor digital-DC devices. Easily change features and functions of your power supply design with a simple GUI.

Design

Simulation Tool

iSim Online Designer

Select supporting components, build your schematic and validate your power management and op amp designs.

Simulate

Cross Reference

Intersil Cross Reference

Cross-reference based on data from industry sources. Support for the online tool has been discontinued, but the data is still available.

Download

Knowledge Base

Switching Regulators FAQs

Find answers to common questions, support articles and development hints.


FAQs

Related Boards and Kits

Related Videos

3:02
Find out how the highly efficient, compact 12V synchronous buck regulator family can meet your power requirements for 12V rails.
9:50
This webinar introduces three buck-boost regulators in QFN packages, ISL91127IR, ISL91107IR, ISL9120IR, for battery-powered portable devices.
3:57
This webinar introduces the ISL85003 and ISL85003A synchronous buck (step-down) regulators with integrated high-side and low-side FETs.
11:01
This webinar introduces the ISL78233, ISL78234 and ISL78235 automotive grade synchronous buck regulators for point-of-load applications.
3:02
Find out how the highly efficient, compact 12V synchronous buck regulator family can meet your power requirements for 12V rails.
9:50
This webinar introduces three buck-boost regulators in QFN packages, ISL91127IR, ISL91107IR, ISL9120IR, for battery-powered portable devices.
3:57
This webinar introduces the ISL85003 and ISL85003A synchronous buck (step-down) regulators with integrated high-side and low-side FETs.
11:01
This webinar introduces the ISL78233, ISL78234 and ISL78235 automotive grade synchronous buck regulators for point-of-load applications.
3:02
Find out how the highly efficient, compact 12V synchronous buck regulator family can meet your power requirements for 12V rails.
9:50
This webinar introduces three buck-boost regulators in QFN packages, ISL91127IR, ISL91107IR, ISL9120IR, for battery-powered portable devices.
3:57
This webinar introduces the ISL85003 and ISL85003A synchronous buck (step-down) regulators with integrated high-side and low-side FETs.
11:01
This webinar introduces the ISL78233, ISL78234 and ISL78235 automotive grade synchronous buck regulators for point-of-load applications.

Action Needed