7.3.5.4.3 Fault Report Holding

When using PWM dimming, FAULT is easily cleared by the PWM falling edge. Even if the fault condition remains all the time, FAULT is discontinuous. To avoid this unexpected fault report behavior, the device implements fault-report holding time. Figure 24 shows a typical issue when PWM dimming, the FAULT is cleared unexpectedly even when the short-to-GND still exists. The TPS1H000-Q1 device with fault-report holding function allows the right behavior as shown in Figure 25.

Figure 24. Without Fault-Report Holding

Figure 25. With Fault-Report Holding