[原创]ST L99H02汽车马达驱动解决方案

ST公司的L99H02是驱动4个外接N沟H桥配置的MOS晶体管,用于汽车应用中的DC马达驱动. L99H02集成了自由配置的电流检测放大器.集成的标准串行外设接口(SPI)控制设备和提供诊断信息.还实现了用于外接MOSFET热传感器的接口引脚.器件满足AEC-Q100资质,工作电压6V到28V,中心2级电荷泵,占空比为100%,电荷泵输出可用来外部反向电池NMOSFET保护,电荷泵电流限制,PWM工作高达30kHz,主要用在雨刷,电动门, 安全带张紧装置, 座椅定位, 节流阀, 停机刹车和2H 马达.本文介绍了L99H02主要特性, 框图和评估板EVAL-L99H02XP框图和主要特性,电路图以及子板电路图,以及PCB主板和子板设计图.

The L99H02 is designed to drive 4 external N-channel MOS transistors in H-bridge

configuration for DC-motor driving in automotive applications. A free configurable current sense amplifier is integrated. The integrated standard serial peripheral interface (SPI) controls the device and provides diagnostic information. An interface pin for the thermal sensors of the external MOSFETs is implemented.

L99H02主要特性:

· AEC-Q100 qualified

· Operating supply voltage 6 V to 28 V

· Central 2-stage charge pump

· 100% duty cycle

· Full RDSon down to 6 V (standard level threshold MOSFETs)

· Charge pump output available for driving an external reverse battery NMOSFET protection

· Charge pump current limited

· PWM operation up to 30 kHz

· SPI interface

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