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[原创] Renesas ISL71043M耐辐射单端电流模式PWM控制方案

关键词:电源管理 PWM控制器 耐辐射 开关电源 ISL71043M

时间:2019-05-29 12:20:13       来源:中电网

Renesas公司的ISL71043M是耐辐射单端电流模式PWM控制器,可工作在高达13.2V,工作电流2.9mA,典型起动电流90μA,可调工作频率到1MHz,具有50ns上升和下降时间的1A驱动电流.最大占空比100%,1.5MHz带宽误差放大器,限流阈值±3%,特性化辐射电平,低丢失率(LDR) (0.01rad(Si)/s)为30krad(Si),单粒子烧毁LET 43MeV•cm2/mg,工作温度-55℃到 +125℃,主要用在电流模式开关电源,隔离降压和反激稳压器,升压稳压器,马达方向和速度控制以及大电流FET驱动器的控制.本文介绍了ISL71043M主要特性,框图和反激应用框图,应用电路图和ISL71043M SET评估板电路图以及评估板ISL71043MEVAL1Z主要特性和指标,电路图,材料清单和PCB设计图.

The ISL71043M is a PWM controller suitable for a widerange of power conversion applications including boost,flyback, and isolated output configurations. Its fast signal propagation and output switching characteristics makethis an ideal product for existing and new designs.

Features include up to 13.2V operation, 2.9mA operatingcurrent, 90μA typical start-up current, adjustableoperating frequency to 1MHz and 1A current drivecapability with 50ns rise and fall times.

The ISL71043M is offered in an 8 Ld SOIC package andis specified across the extended temperature range of-55℃ to +125℃.

ISL71043M主要特性:

• 1A MOSFET gate driver
• 90μA typical start-up current, 125μA maximum
• Moisture Sensitivity Level (MSL..

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