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TPS2836 Datasheet Preview

TPS2836 Datasheet

Synchronous-Buck MOSFET Drivers

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D Floating Bootstrap or Ground-Reference
High-Side Driver
D Adaptive Dead-Time Control
D 50-ns Max Rise/Fall Times With 3.3-nF Load
D 2.4-A Typical Output Current
D 4.5-V to 15-V Supply Voltage Range
D TTL-Compatible Inputs
D Internal Schottky Bootstrap Diode
D Low Supply Current....3 mA Typical
D Ideal for High-Current Single or Multiphase
Power Supplies
D − 40°C to 125°C Operating Virtual
Junction-Temperature Range
TPS2836, TPS2837
SYNCHRONOUSĆBUCK MOSFET DRIVER
WITH DEADĆTIME CONTROL
SLVS224B − NOVEMBER 1999 − REVISED AUGUST 2002
D PACKAGE
(TOP VIEW)
IN
PGND
DT
VCC
1
2
3
4
8 BOOT
7 HIGHDR
6 BOOTLO
5 LOWDR
description
The TPS2836 and TPS2837 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 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 TPS2836 has a noninverting input, while the TPS2837 has an inverting input. These 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
TPS2836D
TPS2837D
The D package is available taped and reeled. Add R
suffix to device type (e.g., TPS2836DR)
DEVICE NAME
TPS2830
TPS2831
TPS2832
TPS2833
TPS2834
TPS2835
Related Synchronous MOS FET Drivers
ADDITIONAL FEATURES
INPUTS
ENABLE, SYNC and CROWBAR
CMOS
Noninverted
Inverted
W/O ENABLE, SYNC and CROWBAR CMOS
Noninverted
Inverted
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 2002, Texas Instruments Incorporated
1




etcTI

TPS2836 Datasheet Preview

TPS2836 Datasheet

Synchronous-Buck MOSFET Drivers

No Preview Available !

TPS2836, TPS2837
SYNCHRONOUSĆBUCK MOSFET DRIVER
WITH DEADĆTIME CONTROL
SLVS224B − NOVEMBER 1999 − REVISED AUGUST 2002
functional block diagram
4
VCC
(TPS2836 Only)
1
IN
8 BOOT
1 M
7 HIGHDR
250 k
6 BOOTLO
(TPS2837 Only)
3
DT
VCC
5 LOWDR
250 k
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 to develop the floating
bootstrap voltage for the high-side MOSFET. The capacitor value is typically between 0.1 µF and 1 µF.
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 TPS2836; inverting input for the TPS2837).
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


Part Number TPS2836
Description Synchronous-Buck MOSFET Drivers
Maker etcTI
Total Page 17 Pages
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