ZHCSHN4D February 2018 – September 2021 TPS1H200A-Q1
PRODUCTION DATA
The DIAG_EN pin enables or disables the diagnostic functions. If multiple devices are used, but the ADC resource is limited in the microcontroller, the microcontroller uses GPIOs to set DIAG_EN high to enable the diagnostics of one device, and disables the diagnostics of the other devices by setting DIAG_EN low. Additionally, the device can keep power consumption to a minimum by setting DIAG_EN and IN low.
Table 7-2 applies when the DIAG_EN pin is enabled, and Table 7-3 applies when the DIAG_EN pin is disabled.
| CONDITION | IN | OUT | CRITERION | FAULT | FAULT RECOVERY |
|---|---|---|---|---|---|
| Normal | L | L | N/A | H | N/A |
| H | H | N/A | H | ||
| Overload or short to GND | H | L | current limit triggered | L | See Table 7-1. |
| Open load or short to battery | H | H | IOUT < l(ol,on) | L | FAULT clears when IN turns low for a duration longer than t FAULT. OR FAULT clears when the open load is removed. |
| L(1) | H | VVS – VOUT < V(ol,off) | L | FAULT clears when IN is toggling OR FAULT clears when the open load is removed. | |
| Thermal shutdown | H | N/A | Thermal shutdown triggered | L | FAULT clears when IN turns low for a duration longer than t FAULT. OR FAULT clears when thermal shutdown quits. |
| Thermal swing | H | N/A | Thermal swing triggered | L | FAULT clears when IN turns low for a duration longer than t FAULT. OR FAULT clears when thermal swing quits. |
| DIAG_EN | IN CONDITION | PROTECTIONS AND DIAGNOSTICS |
|---|---|---|
| LOW | ON | Diagnostics disabled, full protections |
| OFF | Diagnostics disabled, no protection |