TPS1HC30-Q1
ZHCSP75A –JULY 2022 –REVISED DECEMBER 2022
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8.3.4.9 Loss of Power Supply Protection
When loss of supply occurs, output is turned off regardless of whether the input is high or low. For a resistive or
capacitive load, loss of supply protection is easy to achieve due to no more power. The worst case is a charged
inductive load. In this case, the current is driven from all of the IOs to maintain the inductance output loop. TI
recommends either the MCU serial resistor plus the GND network (diode and resistor in parallel) or external free-
wheeling circuitry.
Smart High Side Switch
VBB
EN
5V
FLT
LATCH
VOUT
MCU
DIAG_EN
D
Z
SNS
ILIM
L
GND
RGND
DGND
图8-21. Loss of Battery
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