TPS2835

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2.4-A, 28-V half bridge gate driver with TTL inputs and enable for inverting synchronous buck

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Data sheet

document-pdfAcrobat Synchronous-Buck MOSFET Drivers With Deadtime Control datasheet (Rev. B)

TPS2835

ACTIVE

Data sheet

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Product details

Bootstrap supply voltage (max) (V)

28

Power switch

MOSFET

Input supply voltage (min) (V)

4.5

Input supply voltage (max) (V)

15

Peak output current (A)

2.4

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Propagation delay time (µs)

0.07

Rise time (ns)

50

Fall time (ns)

40

Iq (mA)

3

Input threshold

TTL

Channel input logic

TTL

Switch node voltage (V)

0

Features

Dead time control, Enable, Synchronous Rectification

Driver configuration

Inverting

Bootstrap supply voltage (max) (V)

28

Power switch

MOSFET

Input supply voltage (min) (V)

4.5

Input supply voltage (max) (V)

15

Peak output current (A)

2.4

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Propagation delay time (µs)

0.07

Rise time (ns)

50

Fall time (ns)

40

Iq (mA)

3

Input threshold

TTL

Channel input logic

TTL

Switch node voltage (V)

0

Features

Dead time control, Enable, Synchronous Rectification

Driver configuration

Inverting

HTSSOP (PWP)

14

32 mm² 5 x 6.4

SOIC (D)

14

51.9 mm² 8.65 x 6

Floating Bootstrap or Ground-Reference High-Side Driver
Adaptive Dead-Time Control
50-ns Max Rise/Fall Times With 3.3-nF Load
2.4-A Typical Output Current
4.5-V to 15-V Supply Voltage Range
TTL-Compatible Inputs
Internal Schottky Bootstrap Diode
SYNC Control for Synchronous or Nonsynchronous Operation
CROWBAR for OVP, Protects Against Faulted High-Side Power FETs
Low Supply Current....3 mA Typical
Ideal for High-Current Single or Multiphase Power Supplies
–40°C to 125°C Operating Virtual Junction Temperature Range
Available in SOIC and TSSOP PowerPAD Packages

PowerPAD is a trademark of Texas Instruments Incorporated.

Floating Bootstrap or Ground-Reference High-Side Driver
Adaptive Dead-Time Control
50-ns Max Rise/Fall Times With 3.3-nF Load
2.4-A Typical Output Current
4.5-V to 15-V Supply Voltage Range
TTL-Compatible Inputs
Internal Schottky Bootstrap Diode
SYNC Control for Synchronous or Nonsynchronous Operation
CROWBAR for OVP, Protects Against Faulted High-Side Power FETs
Low Supply Current....3 mA Typical
Ideal for High-Current Single or Multiphase Power Supplies
–40°C to 125°C Operating Virtual Junction Temperature Range
Available in SOIC and TSSOP PowerPAD Packages

PowerPAD is a trademark of Texas Instruments Incorporated.

The TPS2834 and TPS2835 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 include 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 driver is configured as a nonsynchronous-buck driver disabling the low-side 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 n 14-terminal SOIC and thermally enhanced TSSOP PowerPAD™ packages and operate over a junction temperature range of –40°C to 125°C.

The TPS2834 and TPS2835 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 include 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 driver is configured as a nonsynchronous-buck driver disabling the low-side 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 n 14-terminal SOIC and thermally enhanced TSSOP PowerPAD™ packages and operate over a junction temperature range of –40°C to 125°C.

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