TPS2831 Driver Datasheet

TPS2831 Datasheet PDF, Equivalent


Part Number

TPS2831

Description

Fast Synchronous-Buck Mosfet Driver

Manufacture

etcTI

Total Page 24 Pages
PDF Download
Download TPS2831 Datasheet PDF


TPS2831
TPS2830, TPS2831
FAST SYNCHRONOUSĆBUCK MOSFET DRIVERS
WITH DEADĆTIME CONTROL
SLVS196C − JANUARY1999 − REVISED JANUARY 2001
D Floating Bootstrap or Ground-Reference
High-Side Driver
D Adaptive Dead-Time Control
D 50-ns Max Rise/Fall Times and 100-ns Max
Propagation Delay 3.3-nF Load
D Ideal for High-Current Single or Multiphase
Power Supplies
D 2.4-A Typical Peak Output Current
D 4.5-V to 15-V Supply Voltage Range
D Internal Schottky Bootstrap Diode
D SYNC Control for Synchronous or
Nonsynchronous Operation
D CROWBAR for OVP, Protects Against
Faulted High-Side Power FETs
D Low Supply Current....3-mA Typical
D −40°C to 125°C Operating Virtual Junction
Temperature Range
D Available in SOIC and TSSOP PowerPAD
Packages
D PACKAGE
(TOP VIEW)
ENABLE
IN
CROWBAR
NC
SYNC
DT
PGND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
ENABLE
IN
CROWBAR
NC
SYNC
DT
PGND
PWP PACKAGE
(TOP VIEW)
1 14
2 13
3 12
4 Thermal 11
5 Pad 10
69
78
NC − No internal connection
BOOT
NC
HIGHDR
BOOTLO
LOWDR
NC
VCC
BOOT
NC
HIGHDR
BOOTLO
LOWDR
NC
VCC
description
The TPS2830 and TPS2831 are MOSFET drivers for synchronous-buck power stages. These devices are ideal
for designing a high-performance power supply using switching controllers that do not have MOSFET drivers.
The drivers are designed to deliver 2.4-A peak currents into large capacitive loads. The high-side driver can be
configured as a ground-reference driver or as a floating bootstrap driver. An adaptive dead-time control circuit
eliminates shoot-through currents through the main power FETs during switching transitions, providing higher
efficiency for the buck regulator. The TPS2830/31 drivers have additional control functions: ENABLE, SYNC,
and CROWBAR. Both drivers are off when ENABLE is low. The driver is configured as a nonsynchronous-buck
driver, disabling the low side driver when SYNC is low. The CROWBAR function turns on the low-side power
FET, overriding the IN signal, for over-voltage protection against faulted high-side power FETs.
The TPS2830 has a noninverting input. The TPS2831 has an inverting input. The TPS2830/31 drivers are
available in 14-terminal SOIC and thermally-enhanced TSSOP PowerPADpackages, and operate over a
virtual junction temperature range of − 40°C to 125°C.
DEVICE NAME
TPS2832
TPS2833
TPS2834
TPS2835
TPS2836
TPS2837
Related Synchronous MOSFET Drivers
ADDITIONAL FEATURES
INPUTS
W/O ENABLE, SYNC, and CROWBAR CMOS
Noninverted
Inverted
ENABLE, SYNC, and CROWBAR
TTL
Noninverted
Inverted
W/O ENABLE, SYNC, and CROWBAR TTL
Noninverted
Inverted
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.
PowerPAD is a trademark of 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.
Copyright 2001, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1

TPS2831
TPS2830, TPS2831
FAST SYNCHRONOUSĆBUCK MOSFET DRIVERS
WITH DEADĆTIME CONTROL
SLVS196C − JANUARY1999 − REVISED JANUARY 2001
AVAILABLE OPTIONS
PACKAGED DEVICES
TJ
SOIC
TSSOP
(D) (PWP)
−40°C to 125°C
TPS2830D
TPS2831D
TPS2830PWP
TPS2831PWP
The D and PWP packages are available taped and reeled. Add R
suffix to device type (e.g., TPS2830DR)
functional block diagram
8
VCC
(TPS2830 Only)
2
IN
14 BOOT
12
HIGHDR
11 BOOTLO
(TPS2831 Only)
6
DT
1
ENABLE
5
SYNC
3
CROWBAR
VCC
10 LOWDR
7
PGND
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Features TPS2830, TPS2831 FAST SYNCHRONOUSĆBUCK MOSFET DRIVERS WITH DEADĆTIME CONTROL SLVS196C − JANUARY1999 − REVISED JA NUARY 2001 D Floating Bootstrap or Gro und-Reference High-Side Driver D Adapti ve Dead-Time Control D 50-ns Max Rise/F all Times and 100-ns Max Propagation De lay − 3.3-nF Load D Ideal for High-Cu rrent Single or Multiphase Power Suppli es D 2.4-A Typical Peak Output Current D 4.5-V to 15-V Supply Voltage Range D Internal Schottky Bootstrap Diode D SYN C Control for Synchronous or Nonsynchro nous Operation D CROWBAR for OVP, Prote cts Against Faulted High-Side Power FET s D Low Supply Current....3-mA Typical D −40°C to 125°C Operating Virtual Junction Temperature Range D Available in SOIC and TSSOP PowerPAD Packages D PACKAGE (TOP VIEW) ENABLE IN CROWBAR N C SYNC DT PGND 1 2 3 4 5 6 7 14 13 12 11 10 9 8 ENABLE IN CROWBAR NC SYNC D T PGND PWP PACKAGE (TOP VIEW) 1 14 2 1 3 3 12 4 Thermal 11 5 Pad 10 69 78 NC − No internal connection BOOT NC HIGHDR BOOTLO LOWDR NC VCC BOOT NC HIGHDR.
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