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TPS2835 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS2835 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 15 page TPS2834, TPS2835 SYNCHRONOUS-BUCK MOSFET DRIVERS WITH DEADTIME CONTROL SLVS223 – NOVEMBER 1999 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Floating Bootstrap or Ground-Reference High-Side Driver D Active Deadtime Control D 50-ns Max Rise/Fall Times With 3.3-nF Load D 2-A Min Peak 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 Typ D Ideal for High-Current Single- or Multiphase Applications D –40°C to 125°C Junction-Temperature Operating Range 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 a switching controller that does not include suitable 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 low-side driver is configured as a nonsynchronous-buck 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 TSSOP packages and operate over a junction temperature range of –40 °C to 125°C. AVAILABLE OPTIONS PACKAGED DEVICES TJ SOIC (D) TSSOP (PWP) –40 °C to 125°C TPS2834D TPS2835D TPS2834PWP TPS2835PWP The D and PWP packages are available taped and reeled. Add R suffix to device type (e.g., TPS2834DR) Copyright © 1999, 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. 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 ENABLE IN CROWBAR NC SYNC DT PGND BOOT NC HIGHDR BOOTLO LOWDR NC VCC D OR PWP PACKAGE (TOP VIEW) NC – No internal connection |
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