DRV8706-Q1中文资料Automotive 40-V H-bridge smart gate driver with offline diagnostics & inline current sense am数据手册TI规格书

描述 Description

The DRV8706-Q1 is a highly integrated H-bridge gate driver, capable of driving high-side and low-side N-channel power MOSFETs. It generates the proper gate drive voltages using an integrated doubler charge pump for the high-side and a linear regulator for the low-side.

The device uses a smart gate drive architecture to reduce system cost and improve reliability. The gate driver optimizes dead time to avoid shoot-through conditions, provides control to decreasing electromagnetic interference (EMI) through adjustable gate drive current, and protects against drain to source and gate short conditions with VDS and VGS monitors.

A wide common mode shunt amplifier provides inline current sensing to continuously measure motor current even during recirculating windows. The amplifier can be used in low-side or high-side sense configurations if inline sensing is not required.

The DRV8706-Q1 provide an array of protection features to ensure robust system operation. These include under and overvoltage monitors for the power supply and charge pump, VDS overcurrent and VGS gate fault monitors for the external MOSFETs, offline open load and short circuit diagnostics, and internal thermal warning and shutdown protection.

特性 Features

• AEC-Q100 qualified for automotive applications:
• Functional Safety-Capable
• H-bridge smart gate driver
• Doubler charge pump for 100% PWM
• Pin to pin gate driver variants
• DRV8705-Q1: H-bridge with low-side amplifier
• Smart gate drive architecture
• 0.5-mA to 62-mA peak source current output
• Integrated dead-time handshaking
• Wide common mode current shunt amplifier
• Adjustable gain settings (10, 20, 40, 80 V/V)
• Adjustable PWM blanking scheme
• Multiple interface options available
• H/W: Simplified control and less MCU pins
• Spread spectrum clocking for EMI reduction
• Integrated protection features
• Supply and regulator voltage monitors
• MOSFET VGS gate fault monitors
• Offline open load and short circuit diagnostics
• Fault condition interrupt pin (nFAULT)