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Details, datasheet, quote on part number:TPS2833DR
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| Part: | TPS2833DR |
| Category: | Power Management => Power Distribution/Switches => MOSFET Drivers => MOSFET and Power Drivers |
| Description: | ti TPS2833, Inverting Fast Synchronous Buck MOSFET Drivers And Enable |
| Company: | Texas Instruments, Inc. |
| Datasheet: | Download TPS2833DR datasheet File size : 191 kB |
| Request For quote: | Find where to buy TPS2833DR
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Datasheet text preview:
TPS2832, TPS2833 FAST SYNCHRONOUS-BUCK MOSFET DRIVERS WITH DEAD-TIME CONTROL
SLVS195C FEBRUARY 1999 REVISED JANUARY 2001
D D D D D D D D D D
Floating Bootstrap or Ground-Reference High-Side Driver Adaptive Dead-Time Control 50-ns Max Rise/Fall Times and 100-ns Max Propagation Delay 3.3-nF Load Ideal for High-Current Single or Multiphase Power Supplies 2.4-A Typical Peak Output Current 4.5-V to 15-V Supply Voltage Range Internal Schottky Bootstrap Diode Low Supply Current....3-mA Typical 40°C to 125°C Operating Virtual Junction Temperature Available in SOIC Package
D PACKAGE (TOP VIEW)
IN PGND DT VCC
1 2 3 4
8 7 6 5
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 40°C to 125°C SOIC (D) TPS2832D TPS2833D
The D package is available taped and reeled. Add R suffix to device type (e.g., TPS2832DR)
Related Synchronous MOSFET Drivers
DEVICE NAME TPS2830 TPS2831 TPS2834 TPS2835 TPS2836 TPS2837 ADDITIONAL FEATURES ENABLE, SYNC and CROWBAR SYNC and CROWBAR ENABLE, SYNC and CROWBAR SYNC and CROWBAR W/O ENABLE SYNC and CROWBAR ENABLE, SYNC and CROWBAR CMOS TTL TTL INPUTS Noninverted Inverted Noninverted Inverted 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.
Copyright 2001, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1
TPS2832, TPS2833 FAST SYNCHRONOUS-BUCK MOSFET DRIVERS WITH DEAD-TIME CONTROL
SLVS195C FEBRUARY 1999 REVISED JANUARY 2001
functional block diagram
4 VCC
8 7 6 1 IN VCC (TPS2833 Only) 5 2 3 DT
BOOT HIGHDR BOOTLO
(TPS2832 Only)
LOWDR PGND
Terminal Functions
TERMINAL NAME BOOT NO. 8 I/O I DESCRIPTION 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-M resistor should be connected across the bootstrap capacitor to provide a discharge path when the driver has been powered down. This terminal connects to the junction of the high-side and low-side MOSFETs. Dead-time control terminal. Connect DT to the junction of the high-side and low-side MOSFETs Output drive for the high-side power MOSFET Input signal to the MOSFET drivers (noninverting input for the TPS2832; inverting input for the TPS2833). 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.
BOOTLO DT HIGHDR IN LOWDR PGND VCC
6 3 7 1 5 2 4
O I O I O
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
TPS2832, TPS2833 FAST SYNCHRONOUS-BUCK MOSFET DRIVERS WITH DEAD-TIME CONTROL
SLVS195C FEBRUARY 1999 REVISED JANUARY 2001
detailed description
low-side driver The low-side driver is designed to drive low Rds(on) N-channel MOSFETs. The current rating of the driver is 2 A, source and sink. high-side driver The high-side driver is designed to drive low Rds(on) N-channel MOSFETs. The current rating of the driver is 2 A, source and sink. The high-side driver can be configured as a ground-reference driver or a floating bootstrap driver. The internal bootstrap diode, is a Schottky for improved drive efficiency. The maximum voltage that can be applied between the BOOT terminal and ground is 30 V. dead-time (DT) control Dead-time control prevents shoot through current from flowing through the main power FETs during switching transitions by controlling the turn-on times of the MOSFET drivers. The high-side driver is not allowed to turn on until the gate drive voltage to the low-side FET is low, and the low-side driver is not allowed to turn on until the voltage at the junction of the power FETs (Vdrain) is low; the DT terminal connects to the junction of the power FETs. IN The IN terminal is a digital terminal that is the input control signal for the drivers. The TPS2832 has a noninverting input; the TPS2833 has an inverting input.
High-level input voltages on IN and DT must be greater than or equal to 0.7VCC.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
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