TPS2320, TPS2321
DUAL HOT SWAP POWER CONTROLLER
WITH INDEPENDENT CIRCUIT BREAKER
SLVS276A – MARCH 200 – REVISED APRIL 2000
D OR PW PACKAGE
(TOP VIEW)
features
Dual-Channel High-Side MOSFET Drivers
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: 3 V to 13 V; IN2: 3 V to 5.5 V
Inrush Current Limiting With dv/dt Control
Independent Circuit-Breaker Control With
Programmable Current Limit and Transient
Timer
CMOS- and TTL-Compatible Enable Input
IN1
Low, 5-µA Standby Supply Current . . . Max
Available in 16-Pin SOIC and TSSOP
Package
NOTE: Terminal 14 is active high on TPS2321.
–40°C to 85°C Ambient Temperature Range
typical application
Electrostatic Discharge Protection
V
O1
+
applications
V1
3 V – 13 V
Hot-Swap/Plug/Dock Power Management
Hot-Plug PCI, Device Bay
DISCH1
IN1
ISET1
GATE1
ISENSE1
VREG
Electronic Circuit Breaker
AGND
DGND
TPS2320
description
FAULT
TIMER
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.
ENABLE
GATE2
IN2
ISET2
ISENSE2
DISCH2
V
O2
+
V2
3 V – 5.5 V
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
PACKAGES
PIN
COUNT
T
A
HOT-SWAP CONTROLLER DESCRIPTION
ENABLE
ENABLE
Dual-channel with independent OCP and adjustable PG
Dual-channel with interdependent OCP and adjustable PG
20
20
TPS2300IPW
TPS2310IPW
TPS2301IPW
TPS2311IPW
TPS2320ID
TPS2320IPW
TPS2321ID
TPS2321IPW
–40°C to 85°C
Dual-channel with independent OCP
16
14
TPS2330ID
TPS2330IPW
TPS2331ID
TPS2331IPW
Single-channel with OCP and adjustable PG
†
The packages are available left-end taped and reeled (indicated by the R suffix on the device type; e.g., TPS2321IPWR).
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.
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.
1
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