SLVAES9A June 2020 – July 2020 TPS1H000-Q1 , TPS1H100-Q1 , TPS1H200A-Q1 , TPS27S100 , TPS2H000-Q1 , TPS2H160-Q1 , TPS4H000-Q1 , TPS4H160-Q1
The first classification of loss of ground when using a Texas Instruments high-side switch is the loss of the local device ground. In this condition, other components of the overall system may have maintained a valid ground reference; however the ground that is referenced by the TI high-side switch has been lost. Figure 1-1 illustrates this condition.
The second classification of a loss of ground fault when designing with a TI high-side switch is the loss of ground of the entire module. As high-side switches generally power off board loads, this can be a loss of ground of the entire module or board such as an electronic control unit (ECU). Figure 1-2 illustrates this condition.