JAJSGQ9A March 2018 – April 2019 DRV8343-Q1
PRODUCTION DATA.
Half-bridge overcurrent is also monitored by sensing the voltage drop across the external current-sense resistor with the SP pin. If at any time, the voltage on the SP input of the current-sense amplifier exceeds the VSEN_OCP threshold for longer than the tOCP_DEG deglitch time, a SEN_OCP event is recognized and action is done according to the OCP_MODE. On hardware interface devices, the VSENSE threshold is fixed at 1 V, tOCP_DEG is fixed at 4 μs, and the OCP_MODE for VSENSE is fixed for latched shutdown. In the SPI device, the VSENSE threshold is set through the SEN_LVL SPI register, the tOCP_DEG is set through the OCP_DEG SPI register, and the OCP_MODE bit can operate in four different modes: VSENSE latched shutdown, VSENSE automatic retry, VSENSE report only, and VSENSE disabled.