TPS1HC30-Q1
ZHCSP75A –JULY 2022 –REVISED DECEMBER 2022
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VOUT (V)
VBB
VBB - VDS
Time (s)
Current (A)
IILIM2
IILIM1
INOM
dt
Time (s)
tSW
图9-3. Capacitive Charging Changing Current Limit
Alternatively, if the switch is open, the current limit starts out at a lower value and then the switch can be closed
when the capacitance gets charged up. This lower current limit level allows higher value capacitance to be
charged up. The timing diagram can be seen in 图9-4.
VOUT (V)
VBB
VBB - VDS
Time (s)
Current (A)
IILIM2
INOM
IILIM1
dt
Time (s)
tSW
图9-4. Large Capacitive Charging Changing Current Limit
9.2.2.2 EMC Transient Disturbances Test
Due to the severe electrical conditions in the automotive environment, immunity capacity against electrical
transient disturbances is required, especially for a high side power switch, which is connected directly to the
battery. Detailed test requirements are in accordance with the ISO 7637-2:2011 and ISO 16750-2:2010
standards. The TPS1HC30-Q1 device is tested and certificated by a third-party organization.
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