Datasheet4U Logo Datasheet4U.com

ISL78225 - 4-Phase Interleaved Boost PWM Controller

General Description

A resistor placed from FS to ground will set the PWM switching frequency.

Use this pin to set up the desired soft-start time.

Key Features

  • Peak current mode PWM control with adjustable slope compensation.
  • Precision resistor/DCR current sensing.
  • 2-, 3- or 4-phase operation.
  • Adjustable phase dropping/diode emulation/pulse skipping for high efficiency at light load.
  • Phase dropping facilitated with companion FET driver ISL78420 (featuring tri-level input control).
  • Adjustable switching frequency or external synchronization from 75kHz up to 1MHz per phase.
  • Over-temperature/o.

📥 Download Datasheet

Datasheet Details

Part number ISL78225
Manufacturer Renesas
File Size 1.22 MB
Description 4-Phase Interleaved Boost PWM Controller
Datasheet download datasheet ISL78225 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
ISL78223 ZVS Full-Bridge PWM Controller Intersil
ISL78840ASEH High Performance Industry Standard Single-Ended Current Mode PWM Controller Intersil
ISL78840ASRH High Performance Industry Standard Single-Ended Current Mode PWM Controller Intersil
ISL78841ASEH High Performance Industry Standard Single-Ended Current Mode PWM Controller Intersil
ISL78841ASRH High Performance Industry Standard Single-Ended Current Mode PWM Controller Intersil

Other Datasheets by Renesas

Part Number Description
ISL78220 6-Phase Interleaved Boost PWM Controller
ISL78223 ZVS Full-Bridge PWM Controller
ISL78224 4-Phase 12V/48V Bidirectional Synchronous PWM Controller
ISL78226 6-Phase 12V/48V Bidirectional Synchronous PWM Controller
ISL78227 2-Phase Boost Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
DATASHEET ISL78225 4-Phase Interleaved Boost PWM Controller with Light Load Efficiency Enhancement FN7909 Rev 4.00 September 5, 2014 The ISL78225 4-phase controller is targeted for applications where high efficiency (>95%) and high power are required. The multiphase boost converter architecture uses interleaved timing to multiply channel ripple frequency and reduce input and output ripple. Lower ripple results in fewer input/output capacitors and therefore lower component cost and smaller implementation area. The ISL78225 has a dedicated pin to initiate the phase dropping scheme for higher efficiency at light load by dropping phases based on the load current, so the switching and core losses in the converter are reduced significantly.