概览

简介

The ISL6752 is a high-performance, low-pin count alternative Zero-Voltage Switching (ZVS) full-bridge PWM controller. Like Renesas' ISL6551, it achieves ZVS operation by driving the upper bridge FETs at a fixed 50% duty cycle while the lower bridge FETs are trailing-edge modulated with adjustable resonant switching delays. Compared to the more familiar phase-shifted control method, this algorithm offers equivalent efficiency and improved overcurrent and light load performance with less complexity in a lower pin count package. The ISL6752 features complemented PWM outputs for Synchronous Rectifier (SR) control. The complemented outputs may be dynamically advanced or delayed relative to the PWM outputs using an external control voltage. This advanced BiCMOS design features precision dead time and resonant delay control and an oscillator adjustable to 2MHz operating frequency. Additionally, multi-pulse suppression ensures alternating output pulses at low duty cycles where pulse skipping may occur.

特性

  • Adjustable resonant delay for ZVS operation
  • Synchronous rectifier control outputs with adjustable delay/advance
  • Current-mode control
  • 3% current limit threshold
  • Adjustable dead time control
  • 175μA start-up current
  • Supply UVLO
  • Adjustable oscillator frequency up to 2MHz
  • Internal over-temperature protection
  • Buffered oscillator sawtooth output
  • Fast current sense to output delay
  • Adjustable cycle-by-cycle peak current limit
  • 70ns leading edge blanking
  • Multi-pulse suppression
  • Pb-free (RoHS compliant)

产品对比

应用

应用

  • ZVS Full-Bridge Converters
  • Telecom and Datacom Power
  • Wireless Base Station Power
  • File Server Power
  • Industrial Power Systems

文档

类型 文档标题 日期
数据手册 PDF 1.02 MB
手册 PDF 5.49 MB 日文
产品变更通告 PDF 398 KB
应用文档 PDF 581 KB
应用文档 PDF 725 KB
应用文档 PDF 1.49 MB
应用文档 PDF 509 KB
应用文档 PDF 397 KB
手册 - 开发工具 PDF 2.28 MB
9 items

设计和开发

软件与工具

软件与工具

Software title
Software type
公司
iSim:PE Offline Simulation Tool
iSim 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.
Simulator 瑞萨电子
1 item

开发板与套件

开发板与套件

模型