Diodes Incorporated AP63203 | Demoboard AP63203WU-EVM

Description

The AP63203 is a 2A, synchronous buck converter with a wide input voltage range of 3.8V to 32V and fully integrates a 125mΩ high-side power MOSFET and a 68mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion. The AP63203 device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated compensation network. The AP63203 is fixed output buck converters with Electromagnetic Interference (EMI) reduction. The converter features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time. It also has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which further reduces high-frequency radiated EMI noise caused by MOSFET switching. The device is available in a low-profile, TSOT26 package.

Features

• VIN 3.8V to 32V
• 2A Continuous Output Current
• 0.8V ± 1% Reference Voltage
• 22μA Ultralow Quiescent Current (Pulse Frequency Modulation)
• 1.1MHz Switching Frequency
• Supports Pulse Frequency Modulation (PFM) and Pulse Width Modulation (PWM)
• Proprietary Gate Driver Design for Best EMI Reduction
• Frequency Spread Spectrum (FSS) to Reduce EMI
• Low-Dropout (LDO) Mode
• Precision Enable Threshold to Adjust UVLO
• Protection Circuitry
• Undervoltage Lockout (UVLO)
• Cycle-by-Cycle Peak Current Limit
• Thermal Shutdown

Typical applications

• 12V and 24V Distributed Power Bus Supplies / FPGA, DSP, and ASIC Supplies
• Flat Screen TV Sets and Monitors
• Power Tools and Laser Printers /
• White Goods and Small Home Appliances / Home Audio / Set Top Boxes / Gaming Consoles / Consumer Electronics
• Network Systems

More information

• Datasheet