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 TPS2834 and TPS2835 are MOSFET drivers designed for synchronous-buck power stages. They are ideal for applications using a switching controller that lacks suitable on-chip MOSFET drivers. These devices deliver a minimum of 2-A peak currents into large capacitive loads and feature an adaptive dead-time control circuit to eliminate shoot-through currents during switching transitions.
| Peak Output Current | 2 A |
|---|---|
| Operating Junction Temperature Range | -40°C to 125°C |
| Quiescent Current | 3 mA Typ |
| Rise/Fall Times | 50-ns Max |
The TPS2834 has a noninverting input, while the TPS2835 has an inverting input.
The CROWBAR function turns on the low-side power FET to protect against faulted high-side power FETs.