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FP6326

Synchronous Buck PWM DC-DC Controller

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Typical Application Circuit

FP6326/A

Figure 2. Typical Application Circuit of FP6326/A

Functional Pin Description

Pin Name

BOOT

UGATE

GND

LGATE

VCC

FB

OCSET

PHASE

Pin Function

This pin provides bias voltage to the high side MOSFET Driver. A bootstrap circuit may be to create a BOOT

voltage suitable to drive a standard N-Channel MOSFET.

Connect UGATE to the high side MOSFET gate. This pin is monitored by the adaptive shoot-through protection

circuitry to determine when the high side MOSFET has turned off.

Ground.

Connect LGATE to the low side MOSFET gate. This pin is monitored by the adaptive shoot-through protection

circuitry to determine when the high side MOSFET has turned off.

Power Pin.

Feedback Pin. The typical reference voltage is 0.8V.

Shutdown Control and connect a resistance (ROCSET) for over current setting.

Connect the PHASE pin to the high side MOSFET source.

FP6326/A-1.1-JUL-2009

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