TPS2830 Datasheet, PDF (1/15 Pages) Texas Instruments – FAST SYNCHRONOUS-BUCK MOSFET DRIVERS WITH DEADTIME CONTROL

TPS2830, TPS2831
FAST SYNCHRONOUS-BUCK MOSFET DRIVERS
WITH DEADTIME CONTROL
SLVS196B – JANUARY1999 – REVISED SEPTEMBER 1999
D Floating Bootstrap or Ground-Reference
High-Side Driver
D Active Deadtime Control
D 50-ns Max Rise/Fall Times and 100-ns Max
Propagation Delay — 3-nF Load
D Ideal for High-Current Single or Mutiphase
Applications
D 2.4-A Typ 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 Typ
D –40°C to 125°C Junction-Temperature
Operating Range
D OR PWP PACKAGE
(TOP VIEW)
ENABLE
1
IN
2
CROWBAR
3
NC
4
SYNC
5
DT
6
PGND
7
14
BOOT
13
NC
12
HIGHDR
11
BOOTLO
10
LOWDR
9
NC
8
V_CC
NC – No internal connection
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 a switching controller that does not include suitable
MOSFET drivers on the chip. The drivers are designed to deliver 2.4-A peak currents into large capacitive loads.
Higher currents can be controlled by using multiple drivers in a multiphase configuration. 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 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 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 TSSOP packages and operate over a junction temperature range of –40°C
to 125°C.
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)
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.
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Copyright © 1999, Texas Instruments Incorporated
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