Advanced Double-Ended PWM Controller with Synchronous Rectifier Control and Average Current Limit
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概览
简介
The ISL6742 is a high-performance double-ended PWM controller with advanced synchronous rectifier control and current limit features. It is suitable for both current- and voltage-mode control methods. The ISL6742 includes complemented PWM outputs for Synchronous Rectifier (SR) control. The complemented outputs may be dynamically advanced or delayed relative to the main outputs using an external control voltage. Its advanced current sensing circuitry employs sample and hold methods to provide a precise average current signal. Suitable for average current limiting, a technique which virtually eliminates the current tail-out common to peak current limiting methods, it is also applicable to current sharing circuits and average current-mode control. This advanced BiCMOS design features an adjustable oscillator frequency up to 2MHz, internal over-temperature protection, precision dead time control, and short propagation delays. Additionally, multipulse suppression ensures alternating output pulses at low duty cycles where pulse skipping may occur.
特性
- Synchronous rectifier control outputs with adjustable delay/advance
- Adjustable average current signal
- 3% Tolerance cycle-by-cycle peak current limit
- Fast current sense to output delay
- Adjustable oscillator frequency up to 2MHz
- Adjustable dead time control
- Voltage- or current-mode operation
- Separate RAMP and CS inputs for voltage feed-forward or current-mode applications
- Tight tolerance error amplifier reference over line, load, and temperature
- 175µA start-up current
- Supply UVLO
- Adjustable soft-start
- 70ns leading edge blanking
- Multipulse suppression
- Internal over-temperature protection
- Pb-Free (RoHS compliant)
应用
应用
- Half-Bridge, Full-Bridge, Interleaved Forward, and Push-Pull Converters
- Telecom and Datacom Power
- Wireless Base Station Power
- File Server Power
- Industrial Power Systems
文档
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| PDF 811 KB English(英语) | 数据手册 | |
| PDF 5.51 MB 日文 | 手册 | |
| PDF 294 KB | 产品变更通告 | |
| PDF 817 KB | 数据手册 | |
| PDF 509 KB | 应用文档 | |
| PDF 397 KB | 应用文档 | |
| PDF 1.05 MB | 应用文档 | |
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设计和开发
软件与工具
软件与工具
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Software type
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公司
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| 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.
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Simulator | 瑞萨电子 |
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模型
ECAD 模块
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Processing table
| QSOP | Tube | 980 | 获取样片, | |
| QSOP | Reel | 5000 |
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