TPS28225D

ИС драйвера МОП-транзистора, высокой стороны и низкой стороны, питание 4.5В-8В, 4А, 14нс, SOIC-8.

The TPS28225D is a 8-pin High Frequency Sink Synchronous MOSFET Driver with adaptive dead-time control. This driver is optimized for use in variety of high-current one and multi-phase DC-to-DC converters. This is a solution that provides high efficiency, small size and low EMI emissions. The efficiency is achieved by up to 8.8V gate drive voltage, 14ns adaptive dead-time control, 14ns propagation delays and high-current 2A source and 4A sink drive capability. The 0.4R impedance for the lower gate driver holds the gate of power MOSFET below its threshold and ensures no shoot-through current at high dV/dt phase node transitions. The bootstrap capacitor charged by an internal diode allows use of N-channel MOSFETs in a half-bridge configuration. The TPS28225 features a 3-state PWM input compatible with all multi-phase controllers employing 3-state output feature. As long as the input stays within 3-state window for the 250-ns hold-off time, the driver switches both outputs low.