[原创]ST STDRIVE101三路半桥栅极驱动器解决方案

ST公司的STDRIVE101是用来驱动三相无刷马达的低压栅极驱动器,它是单片三路半桥栅极驱动器,用来驱动N沟功率MOSFET.每个驱动器电流为600mA(沉/源).器件集成了低压降线性稳压器,通过自举电路产生低边和高边栅极驱动器的电源电压.器件提供低边和高边两部分的欠压锁住(UVLO),避免功率开关工作低效率或危险条件. STDRIVE101集成的控制逻辑允许两种输入策略(高边和低边或使能和PWM驱动信号).驱动方式由DT/MODE引脚选择.器件的工作电压从5.5V到75V,提供600mA沉电流/源电流,3.3V和5V控制逻辑非常短的传输时延40ns.主要用在家庭自动化和家用电器,电动自行车,电动工具,风扇和泵,工业自动化,纺织机械,游戏和控制台.本文介绍了STDRIVE101主要特性,框图和电性能指标, 典型应用电路以及评估板EVALSTDRIVE101主要特性,指标和电路图.

The STDRIVE101 is a low voltage gate driver suitable for driving three-phasebrushless motors.

It is a single-chip with three half-bridge gate drivers for N-channel power MOSFETs.

Each driver has a current capability of 600 mA (sink/source). It integrates a low drop

linear regulator generating the supply voltage for both low-side and high-side gate

drivers through a bootstrap circuitry.

The device provides Under Voltage Lock Out (UVLO) on both the low-side and highside

sections, preventing the power switches from operating in low efficiency ordangerous conditions.

The control logic integrated into the STDRIVE101 allows two input strategies (highside

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