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ZHCSP75A July 2022 – December 2022 TPS1HC30-Q1

PRODUCTION DATA

封装选项

机械数据 (封装 | 引脚)

PWP|14
- MPDS370A

散热焊盘机械数据 (封装 | 引脚)

PWP|14
- PPTD393

订购信息

8.3.4 Full Protections and Diagnostics

Table 8-1 is when DIAG_EN is enabled. When DIAG_EN is low, current sense and FLT are disabled. The output is in high-impedance mode. For details, refer to the following table.

Table 8-1 Diagnostic Enable Logic Table

DIAG_EN	IN Condition	Protections and Diagnostics
HIGH	ON	See Fault Table
HIGH	OFF	See Fault Table
LOW	ON	Diagnostics disabled, protection normal SNS and FLT are high impedance
LOW	OFF

Table 8-2 Fault Table

Conditions	EN	VOUT	Latch	FLT	SNS	Behavior	Recovery
Normal	L	L	x	Hi-Z	0	Normal
Normal	H	I_LOAD× R_ON	x	Hi-Z	I_Load/ K_sns	Normal
Overcurrent	H	V_BB – I_LIM × R_LOAD	x	L	V_SNSFH	Holds the current at the current limit until thermal shutdown or when the overcurrent event is removed
STG, Relative Thermal Shutdown, Absolute Thermal Shutdown	H	H/L	L	L	V_SNSFH	Shuts down when devices hits relative or absolute thermal shutdown	Auto retries when T_HYSis met and it has been longer than t_RETRY amount of time
STG, Relative Thermal Shutdown, Absolute Thermal Shutdown	H	H/L	H	L	V_SNSFH	Shuts down when devices hits relative or absolute thermal shutdown	Stays off until latch or enable is toggled
Open load, STB	H	H	x	Hi-Z	I_Load / K_SNS = ~0	Normal behavior, user can judge through the SNS pin output if it is an open load or not
Open load, STB	L	H	x	L	V_SNSFH	Internal pullup resistor is active. If V_BB – V_OUT < V_OL then fault active.	Clears when fault goes away
Reverse Polarity	x	x	x	x	x	Channel turns on to lower power dissipation. Current into ground pin is limited by external ground network.

Table 8-3 Deglitch Time for Each Fault Condition

Fault Condition	Deglitch Time
ILIM	2.5 µs
T_REL	2.5 µs
T_ABS	20 µs
Open Load	500 µs