TPS2321IPW

Product Summary

The TPS2321IPW is a dual-channel hot-swap controller that uses external N-channel MOSFETs as high-side switches in power applications. Features of the device, such as overcurrent protection (OCP), inrush-current control, and the ability to discriminate between load transients and faults, are critical requirements for hot-swap applications. The TPS2321IPW incorporates undervoltage lockout (UVLO) to ensure the device is off at startup. Each internal charge pump, capable of driving multiple MOSFETs, provides enough gate-drive voltage to fully enhance the N-channel MOSFETs. The charge pumps control both the rise times and fall times (dv/dt) of the MOSFETs, reducing power transients during power up/down. The circuit-breaker functionality combines the ability to sense overcurrent conditions with a timer function; this allows designs such as DSPs, that may have high peak currents during power-state transitions, to disregard transients for a programmable period.

Parametrics

TPS2321IPW absolute maximum ratings: (1)Input voltage range VI(IN1), VI(ISENSE1), VI(ISET1), VI(ENABLE): –0.3 to 15 V; (2)Input voltage range VI(IN2), VI(ISENSE2), VI(ISET2), VI(VREG): –0.3 to 7 V; (3)Output voltage range VO(GATE1): –0.3 to 30 V; (4)Output voltage range VO(GATE2): –0.3 to 22 V; (5)Output voltage range VO(DISCH1), VO(FAULT), VO(DISCH2), VO(TIMER): –0.3 to 15 V; (6)Sink current range I(GATE1), I(GATE2), I(DISCH1), I(DISCH2): 0 to 100 mA; (7)Sink current range I(TIMER), I(FAULT): 0 to 10 mA; (8)Operating virtual junction temperature range, TJ: –40 to 100℃; (9)Storage temperature range, Tstg: –55 to 150℃; (10)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 260℃.

Features

TPS2321IPW features: (1)Dual-Channel High-Side MOSFET Drivers; (2)IN1: 3 V to 13 V; IN2: 3 V to 5.5 V; (3)Output dV/dt Control Limits Inrush Current; (4)Independent Circuit-Breaker With Programmable Overcurrent Threshold and Transient Timer; (5)CMOS- and TTL-Compatible Enable Input; (6)Low, 5-μA Standby Supply Current (Max); (7)Available in 16-Pin SOIC and TSSOP Package; (8)–40℃ to 85℃ Ambient Temperature Range; (9)Electrostatic Discharge Protection.

Diagrams