ISL6742，双端PWM控制器，Advanced Double-Ended PWM Controller
| |
ISL6742 ISL6742 |
| Advanced Double-Ended PWM Controller先进的双端PWM控制器 |
|
 |
| Control Mode控制模式 |
 |
Voltage, Peak Current, or Average Current Mode电压，峰值电流，或平均电流模式 |
|
| UVLO Rising (V) UVLO的崛起（五） |
|
8.75 8.75 |
|
| UVLO Falling (V) UVLO的下降（五） |
|
7 7 |
|
| V BIAS (max) (V) V 偏压 （最大）（五） |
|
20 20 |
|
| No-Load Operating Current (mA)无负载工作电流（mA） |
|
5 5 |
|
| # of PWM Outputs ＃的PWM输出 |
|
4 4 |
|
| FET Driver I OUT (max) (A) FET驱动器I 输出 （最大）（一） |
|
.1 .1 |
|
| Max Duty Cycle (%)最大占空比（％） |
|
100 100 |
|
|
|
| Key Features 主要特点 |
- Synchronous Rectifier Control Outputs with Adjustable Delay/Advance同步整流控制输出和可调延迟/进展
- Adjustable Average Current Signal可调节平均电流信号
- 3% Tolerance Cycle-by-Cycle Peak Current Limit 3％的公差逐周期峰值电流限制
- Fast Current Sense to Output Delay快速电流检测到输出的延迟
- Adjustable Oscillator Frequency Up to 2MHz可调振荡器频率高达2MHz
- Adjustable Deadtime Control可调节死区时间控制
- Voltage- or Current-Mode Operation电压或电流模式操作
- Separate RAMP and CS Inputs for Voltage Feed-Forward or Current-Mode Applications RAMP和独立的电压前馈或电流输入模式应用政务司司长
- Tight Tolerance Error Amplifier Reference Over Line, Load, and Temperature过线紧容错，负载放大器的参考和温度
- 175μA Start-up Current 175μA启动电流
- Supply UVLO电源欠压锁定
- Adjustable Soft-Start可调软启动
- 70ns Leading Edge Blanking 70NS球阀前沿消隐
- Multi-Pulse Suppression多脉冲抑制
- Internal Over-Temperature Protection内部过温保护
- Pb-Free (RoHS Compliant)无铅（符合RoHS）
|
|
| Description 说明 |
|
The ISL6742 is a high-performance double-ended PWM controller with advanced synchronous rectifier control and current limit features.该ISL6742是高性能的先进的同步整流控制和电流限制功能，双端PWM控制器。 It is suitable for both current- and voltage-mode control methods.它同时适用于电流和电压模式控制方法。
The ISL6742 includes complemented PWM outputs for synchronous rectifier (SR) control.包括补充的ISL6742为同步整流（SR）的控制PWM输出。 The complemented outputs may be dynamically advanced or delayed relative to the main outputs using an external control voltage.可补输出可以提前或延期进行动态相对于使用外部控制电压主要产出。
Its advanced current sensing circuitry employs sample and hold methods to provide a precise average current signal.其先进的电流检测电路采用采样和保持方法，以提供精确的平均电流信号。 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.适用于平均电流限制，一个技术，它几乎消除了当前尾巴出共同的峰值电流限制方法，它也适用于交流电路电流和平均电流模式控制。
This advanced BiCMOS design features an adjustable oscillator frequency up to 2MHz, internal over-temperature protection, precision deadtime control, and short propagation delays.这个先进的BiCMOS设计具有可调振荡器频率高达2MHz，内部过温保护，精确死区时间控制和短传播延迟。 Additionally, Multi-Pulse Suppression ensures alternating output pulses at low duty cycles where pulse skipping may occur.此外，多脉冲抑制交替，确保在低占空比脉冲跳跃的地方可能会出现输出脉冲。
|
|
