TPS2320, TPS2321

DUAL HOT SWAP POWER CONTROLLER

WITH INDEPENDENT CIRCUIT BREAKER

SLVS276A – MARCH 200 – REVISED APRIL 2000

1

POST OFFICE BOX 655303

features

Programmable Current Limit and Transient

Timer

Package

applications

description

The TPS2320 and TPS2321 are dual-channel

hot-swap controllers that use external N-channel

MOSFETs as high-side switches in power

applications. Features of these devices, such as

overcurrent protection (OCP), inrush-current

control, and separation of load transients from

actual load increases, are critical requirements for

hot-swap applications.

The TPS2320/21 devices incorporate 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.

AVAILABLE OPTIONS

TA

HOT SWAP CONTROLLER DESCRIPTION

PIN

PACKAGES

TA

HOT-SWAP CONTROLLER DESCRIPTION

COUNT

ENABLE

ENABLE

Dual-channel with independent OCP and adjustable PG

20

TPS2300IPW

TPS2301IPW

Dual-channel with interdependent OCP and adjustable PG

20

TPS2310IPW

TPS2311IPW

–40

°C to 85°C

Dual-channel with independent OCP

16

TPS2320ID

TPS2320IPW

TPS2321ID

TPS2321IPW

Single-channel with OCP and adjustable PG

14

TPS2330ID

TPS2330IPW

TPS2331ID

TPS2331IPW

† The packages are available left-end taped and reeled (indicated by the R suffix on the device type; e.g., TPS2321IPWR).

Copyright

© 2000, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

typical application

NOTE: Terminal 14 is active high on TPS2321.

VREG

IN1

ISET1

ISENSE1 GATE1

DISCH1

FAULT

TIMER

DISCH2

GATE2

ISENSE2

ISET2

IN2

ENABLE

DGND

AGND

V2

V1

3 V – 5.5 V

3 V – 13 V

TPS2320

+

+

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

GATE1

GATE2

DGND

TIMER

VREG

AGND

ISENSE2

ISENSE1

DISCH1

DISCH2

ENABLE

FAULT

ISET1

ISET2

IN2

IN1

D OR PW PACKAGE

(TOP VIEW)