TPS25940-Q1 Texas instruments

TPS25940-Q1

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TPS25940-Q1

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Описание

The TPS25940xx-Q1 eFuse Power Switches are compact, feature rich power management devices with a full suite of protection functions. The wide operating range allows control of many popular DC bus voltages. Integrated back-to-back FETs provide bidirectional current control making the device well suited for systems with load side holdup energy that must not drain back to a failed supply bus.Load, source and device protection are provided with many programmable features including overcurrent, dVo/dt ramp and overvoltage, undervoltage thresholds. For system status monitoring and downstream load control, the device provides PGOOD, FLT and precise current monitor output. Precise programmable undervoltage, overvoltage thresholds and mode simplify power management design.The TPS25940xx-Q1 monitor V(IN) and V(OUT) to provide true reverse current blocking when V(IN) < (V(OUT) – 66 mV). This function supports supply bus protection from over-voltages during output short to battery faults.

Qualified for automotive applications
AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C5
2.7-V to 18-V operating voltage, 20 V (maximum)
Total R_ON: 42 mΩ (typical)
0.6-A to 5.3-A adjustable current limit (±8%)
IMON Current indicator output
- ±8% accuracy for TPS25940-Q1/TPS25940L-Q1
Adjustable under-, overvoltage threshold (±2%)
Reverse current blocking
1-µs reverse voltage shutoff
Programmable dV_o/dt control
Power good and fault outputs
Short-to-battery protection
Short-to-ground protection
TPS25940-Q1/TPS259401A-Q1: auto-retry
TPS25940L-Q1: latch-off

FET	Internal
Ron (typ) (mΩ)	42
Vin (min) (V)	2.7
Vin (max) (V)	18
Vabsmax_cont (V)	20
Current limit (min) (A)	0.6
Current limit (max) (A)	5.3
Overcurrent response	Current limiting
Fault response	Auto-retry, Latch-off
Soft start	Adjustable
Overvoltage response	Cut-off
Features	Current monitoring, Fault output, Power good signal, Reverse current blocking always
Rating	Automotive
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, Reverse current blocking, Short circuit protection, Thermal shutdown