TPS2832 Driver Datasheet

TPS2832 Datasheet PDF, Equivalent


Part Number

TPS2832

Description

Fast Synchronous-Buck Mosfet Driver

Manufacture

etcTI

Total Page 17 Pages
PDF Download
Download TPS2832 Datasheet PDF


TPS2832
TPS2832, TPS2833
FAST SYNCHRONOUSĆBUCK MOSFET DRIVERS
WITH DEADĆTIME CONTROL
SLVS195C − FEBRUARY 1999 − 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 Low Supply Current....3-mA Typical
D −40°C to 125°C Operating Virtual Junction
Temperature
D Available in SOIC Package
IN
PGND
DT
VCC
D PACKAGE
(TOP VIEW)
18
27
36
45
BOOT
HIGHDR
BOOTLO
LOWDR
description
The TPS2832 and TPS2833 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 and provides high
efficiency for the buck regulator.
The TPS2832 has a noninverting input. The TPS2833 has an inverting input. The TPS2832/33 drivers, available
in 8-terminal SOIC packages, operate over a junction temperature range of − 40°C to 125°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
TJ SOIC
(D)
−40°C to 125°C
TPS2832D
TPS2833D
The D package is available taped and reeled. Add R
suffix to device type (e.g., TPS2832DR)
DEVICE NAME
TPS2830
TPS2831
TPS2834
TPS2835
TPS2836
TPS2837
Related Synchronous MOSFET Drivers
ADDITIONAL FEATURES
INPUTS
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.
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.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright 2001, Texas Instruments Incorporated
1

TPS2832
TPS2832, TPS2833
FAST SYNCHRONOUSĆBUCK MOSFET DRIVERS
WITH DEADĆTIME CONTROL
SLVS195C − FEBRUARY 1999 − REVISED JANUARY 2001
functional block diagram
4
VCC
(TPS2832 Only)
1
IN
8 BOOT
7 HIGHDR
6 BOOTLO
(TPS2833 Only)
3
DT
VCC
5 LOWDR
2
PGND
TERMINAL
NAME
NO.
BOOT
8
BOOTLO
DT
HIGHDR
IN
LOWDR
PGND
VCC
6
3
7
1
5
2
4
Terminal Functions
I/O DESCRIPTION
I Bootstrap terminal. A ceramic capacitor is connected between BOOT and BOOTLO terminals to develop
the floating bootstrap voltage for the high-side MOSFET. The capacitor value is typically between 0.1 µF
and 1 µF. A 1-Mresistor should be connected across the bootstrap capacitor to provide a discharge path
when the driver has been powered down.
O This terminal connects to the junction of the high-side and low-side MOSFETs.
I Dead-time control terminal. Connect DT to the junction of the high-side and low-side MOSFETs
O Output drive for the high-side power MOSFET
I Input signal to the MOSFET drivers (noninverting input for the TPS2832; inverting input for the TPS2833).
O Output drive for the low-side power MOSFET
Power ground. Connect to the FET power ground.
I Input supply. Recommended that a 1 µF capacitor be connected from VCC to PGND.
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Features TPS2832, TPS2833 FAST SYNCHRONOUSĆBUCK MOSFET DRIVERS WITH DEADĆTIME CONTROL SLVS195C − FEBRUARY 1999 − REVISED JANUARY 2001 D Floating Bootstrap or G round-Reference High-Side Driver D Adap tive 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 Supp lies D 2.4-A Typical Peak Output Curren t D 4.5-V to 15-V Supply Voltage Range D Internal Schottky Bootstrap Diode D L ow Supply Current....3-mA Typical D − 40°C to 125°C Operating Virtual Junct ion Temperature D Available in SOIC Pac kage IN PGND DT VCC D PACKAGE (TOP VI EW) 18 27 36 45 BOOT HIGHDR BOOTLO LOW DR description The TPS2832 and TPS2833 are MOSFET drivers for synchronous-buc k power stages. These devices are ideal for designing a high-performance power supply using switching controllers tha t do not have MOSFET drivers. The drive rs are designed to deliver 2.4-A peak c urrents into large capacitive loads. The high-side driver can be configured.
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