TPS2831 Inverting Fast Synchronous Buck MOSFET Drivers with Enable | TI.com

TPS2831 (ACTIVE) Inverting Fast Synchronous Buck MOSFET Drivers with Enable

 

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 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, providing higher 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, disabling the low side 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 thermally-enhanced TSSOP PowerPADE packages, and operate over a virtual junction temperature range of \x9640°C to 125°C.

Features

  • Floating Bootstrap or Ground-Reference High-Side Driver
  • Adaptive Dead-Time Control
  • 50-ns Max Rise/Fall Times and 100-ns Max Propagation Delay \x96 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
  • SYNC Control for Synchronous or Nonsynchronous Operation
  • CROWBAR for OVP, Protects Against Faulted High-Side Power FETs
  • Low Supply Current....3-mA Typical
  • \x9640°C to 125°C Operating Virtual Junction Temperature Range
  • Available in SOIC and TSSOP PowerPAD Packages

PowerPAD is a trademark of Texas Instruments Incorporated.

Parametrics

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Part number Order Number of channels (#) Power switch Bus voltage (Max) (V) Peak output current (A) Input VCC (Min) (V) Input VCC (Max) (V) Rise time (ns) Fall time (ns) Prop delay (ns) Iq (uA) Input threshold Channel input logic Negative voltage handling at HS pin (V) Features Rating Operating temperature range (C) Package Group
TPS2831 Order now 2     MOSFET     28     2.4     4.5     15     50     50     75     3000     CMOS     CMOS     0     Dead Time Control
Synchronous Rectification    
Catalog     -40 to 125     SOIC | 14