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TPS2834 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS2834 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 25 page TPS2834, TPS2835 SYNCHRONOUSBUCK MOSFET DRIVERS WITH DEADTIME CONTROL SLVS223B − NOVEMBER 1999 − REVISED AUGUST 2002 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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 SYNC Control for Synchronous or Nonsynchronous Operation D CROWBAR for OVP, Protects Against Faulted High-Side Power FETs 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 D Available in SOIC and TSSOP PowerPAD Packages description 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 in 14-terminal SOIC and thermally enhanced TSSOP PowerPAD packages and operate over a junction temperature range of − 40 °C to 125°C. Related Synchronous MOSFET Drivers DEVICE NAME ADDITIONAL FEATURES INPUTS TPS2830 ENABLE, SYNC, and CROWBAR CMOS Noninverted TPS2831 ENABLE, SYNC, and CROWBAR CMOS Inverted TPS2832 W/O ENABLE, SYNC, and CROWBAR CMOS Noninverted TPS2833 W/O ENABLE, SYNC, and CROWBAR CMOS Inverted TPS2836 W/O ENABLE, SYNC, and CROWBAR TTL Noninverted TPS2837 W/O ENABLE, SYNC, and CROWBAR TTL Inverted Copyright 2002, Texas Instruments Incorporated 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. PowerPAD is a trademark of Texas Instruments Incorporated. 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. 1 2 3 4 5 6 7 14 13 12 11 10 9 8 PWP PACKAGE (TOP VIEW) NC − No internal connection ENABLE IN CROWBAR NC SYNC DT PGND BOOT NC HIGHDR BOOTLO LOWDR NC VCC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 ENABLE IN CROWBAR NC SYNC DT PGND BOOT NC HIGHDR BOOTLO LOWDR NC VCC D PACKAGE (TOP VIEW) Thermal Pad |
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Similar Description - TPS2834_15 |
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