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TPS2835 Datasheet(PDF) 1 Page - Texas Instruments

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Part # TPS2835
Description  SYNCHRONOUS-BUCK MOSFET DRIVERS WITH DEADTIME CONTROL
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS2835 Datasheet(HTML) 1 Page - Texas Instruments

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TPS2834, TPS2835
SYNCHRONOUS-BUCK MOSFET DRIVERS
WITH DEADTIME CONTROL
SLVS223 – NOVEMBER 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Floating Bootstrap or Ground-Reference
High-Side Driver
D Active Deadtime Control
D 50-ns Max Rise/Fall Times With 3.3-nF Load
D 2-A Min Peak Output Current
D 4.5-V to 15-V Supply Voltage Range
D TTL-Compatible Inputs
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 Typ
D Ideal for High-Current Single- or Multiphase
Applications
D –40°C to 125°C Junction-Temperature
Operating Range
description
The TPS2834 and TPS2835 are MOSFET drivers for synchronous-buck power stages. These devices are ideal
for designing a high-performance power supply using a switching controller that does not include suitable
on-chip MOSFET drivers. The drivers are designed to deliver minimum 2-A peak currents into large capacitive
loads. The high-side driver can be configured as ground-reference or as floating-bootstrap. 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 TPS2834 and TPS2835 have additional
control functions: ENABLE, SYNC, and CROWBAR. Both high-side and low-side drivers are off when ENABLE
is low. The low-side driver is configured as a nonsynchronous-buck driver when SYNC is low. The CROWBAR
function turns on the low-side power FET, overriding the IN signal, for overvoltage protection against faulted
high-side power FETs.
The TPS2834 has a noninverting input, while the TPS2835 has an inverting input. These drivers are available
in 14-terminal SOIC and TSSOP packages and operate over a junction temperature range of –40
°C to 125°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
TJ
SOIC
(D)
TSSOP
(PWP)
–40
°C to 125°C
TPS2834D
TPS2835D
TPS2834PWP
TPS2835PWP
The D and PWP packages are available taped and reeled. Add R
suffix to device type (e.g., TPS2834DR)
Copyright
© 1999, 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.
1
2
3
4
5
6
7
14
13
12
11
10
9
8
ENABLE
IN
CROWBAR
NC
SYNC
DT
PGND
BOOT
NC
HIGHDR
BOOTLO
LOWDR
NC
VCC
D OR PWP PACKAGE
(TOP VIEW)
NC – No internal connection


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