ADP3650

Dual, Bootstrapped, 12 V MOSFET Driver with Output Disable ADP3650 FEATURES All-in-one synchronous buck driver Bootstrapped high-side drive One PWM signal generates both drives Anti-crossconduction protection circuitry OD for disabling the driver outputs GENERAL DESCRIPTION The ADP3650 is a dual, high voltage MOSFET driver optimized for driving two N-channel MOSFETs, the two switches in a nonisolated synchronous buck power converter. Each driver is capable of driving a 3000 pF load with a 45 ns propagation delay and a 25 ns transition time. One of the drivers can be bootstrapped and is designed to handle the high voltage slew rate associated with floating high-side gate drivers. The ADP3650 includes overlapping drive protection to prevent shoot-through current in the external MOSFETs. The OD pin shuts off both the high-side and the low-side MOSFETs to prevent rapid output capacitor discharge during system shutdown. The ADP3650 is specified over the temperature range of −40°C to +85°C and is available in 8-lead SOIC_N and 8-lead LFCSP_VD packages. APPLICATIONS Telecom and datacom networking Industrial and medical systems Point of load conversion: memory, DSP, FPGA, ASIC FUNCTIONAL BLOCK DIAGRAM 12V VCC D1 4 ADP3650 LATCH R1 R2 Q S DELAY BST 1 CBST2 CBST1 DRVH RG IN 2 8 Q1 TO INDUCTOR RBST SW 7 CMP VCC 6 DRVL 5 CMP 1V CONTROL LOGIC Q2 Figure 1. Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is...