TPS24770 Texas instruments

TPS24770

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TPS24770

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Описание

The TPS2477x is a high performance analog Hot Swap Controller for 2.5 V to 18 V systems. The precise and highly programmable protection settings of the TPS2477x aid the design of high power high availability systems where isolating faults is critical. Programmable current limit, fast shut down, and fault timer protect the load and supply during fault conditions such as a hot - short. The fast shutdown threshold can be tuned to ensure a fast response to real faults, while avoiding nuisance trips. Programmable Safe Operating Area (SOA) protection and the inrush timer keep the MOSFET safe under all conditions. After asserting power good, TPS2477x acts as a circuit breaker and runs the fault timer during over current events, but doesn’t current limit. It shuts down after the fault timer expires. Two independent timers (inrush/fault) allow the user to customize protection based on system requirements. Finally, the flexibility of the TPS2477x aid Hot Swap design for the 240 VA requirement and a design example is shown in the datasheet.

2.5V to 18V Bus Operation (30V abs max)
Programmable Protection Settings:
- Current Limit: ±5% at 10mV
- Fast Trip: ±10% at 20mV
Programmable FET SOA Protection
Programable Response Time for Fast Trip
Dual Timer (Inrush/Fault)
Analog Current Monitor (1% at 25mV)
Programmable UV and OV
Status Flags for Faults and Power Good
4mm × 4mm 24-pin QFN
70 = Latch, 71 = Retry, 72 = Fast Latch Off

FET	External
Vin (min) (V)	2.5
Vin (max) (V)	18
Vabsmax_cont (V)	30
Current limit (min) (A)	0.01
Current limit (max) (A)	500
Overcurrent response	Circuit breaker, Current limiting
Fault response	Latch-off
Soft start	Adjustable
Overvoltage response	Cut-off
Features	Current monitoring, Fault output, Power good signal
Rating	Catalog
Device type	eFuses and hot swap controllers
Operating temperature range (°C)	-40 to 125
Function	Adjustable current limit, Current monitoring, Inrush current control, Overvoltage protection, Power good signal, Short circuit protection