Diodes Incorporated AP64502SP | Demoboard AP64502SP-EVM

Description

The AP64502 is 5A, synchronous buck converter with a wide input voltage range of 3.8V to 40V. The device fully integrates a 75mΩ high-side power MOSFET and a 45mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion. The AP64502 device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated loop compensation network. The AP64502 design is optimized for 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 reduces high frequency radiated EMI noise caused by MOSFET switching. The device is available in a SO-8EP package.

Features

• Wide Input Range: 3.8V to 40V
• 5A Continuous Output Current
• 0.8V ±1% Reference Voltage
• 22µA Ultralow Quiescent Current (Pulse Frequency Modulation)
• Programmable Switching Frequency: 100kHz to 2.2MHz
• External Clock Synchronization: 100kHz to 2.2MHz
• Programmable Soft-Start Time
• 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 o Undervoltage Lockout (UVLO)-Output Overvoltage Protection (OVP)-Cycle-by-Cycle Peak Current Limit-Thermal Shutdown
• Totally Lead-Free & Fully RoHS Compliant
• Halogen and Antimony Free. “Green” Device

Typical applications

• White Goods and Small Home Appliances, Home Audio, Consumer Electronics
• Network Systems, Optical Communication and Networking Systems, General Purpose Point of Load
• 5V, 12V, and 24V Distributed Power Bus Supplies, Cordless Power Tools