MOSFET Drivers. TPS2836 Datasheet

TPS2836 Datasheet PDF, Equivalent


Part Number

TPS2836

Description

Synchronous-Buck MOSFET Drivers

Manufacture

etcTI

Total Page 17 Pages
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Download TPS2836 Datasheet


TPS2836 Datasheet
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

TPS2836 Datasheet
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


Features Datasheet pdf D Floating Bootstrap or Ground-Reference High-Side Driver D Adaptive Dead-Time Control D 50-ns Max Rise/Fall Times Wit h 3.3-nF Load D 2.4-A Typical Output Cu rrent D 4.5-V to 15-V Supply Voltage Ra nge D TTL-Compatible Inputs D Internal Schottky Bootstrap Diode D Low Supply C urrent....3 mA Typical D Ideal for High -Current Single or Multiphase Power Sup plies D − 40°C to 125°C Operating V irtual Junction-Temperature Range TPS2 836, TPS2837 SYNCHRONOUSĆBUCK MOSFET D RIVER WITH DEADĆTIME CONTROL SLVS224B − NOVEMBER 1999 − REVISED AUGUST 20 02 D PACKAGE (TOP VIEW) IN PGND DT VC C 1 2 3 4 8 BOOT 7 HIGHDR 6 BOOTLO 5 LOWDR description The TPS2836 and TPS2 837 are MOSFET drivers for synchronous- buck power stages. These devices are id eal for designing a high-performance po wer supply using switching controllers that do not have MOSFET drivers. The dr ivers 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 f.
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