TPS2835

  The TPS2834 and TPS2835 are MOSFET drivers for synchronous-buck power stages. These TPS2834 and TPS2835 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 TPS2834 and TPS2835 drivers are available in 14-terminal SOIC and TSSOP packages and operate over a junction temperature range of ¤C4C to 125C.