Grįžti į Diodes Incorporated

Diodes Incorporated AP64202 Synchronous Buck Converter

Diodes Incorporated AP64202 Synchronous Buck Converter fully integrates a 150mΩ high-side power MOSFET and an 80mΩ low-side power MOSFET to provide high-efficiency step-down DC-DC conversion. In addition, the Diodes Inc AP64202 Synchronous Buck Converter minimizes external component count with a peak current mode control and its integrated loop compensation network.

The AP64202 Converter design is optimized for Electromagnetic Interference (EMI) reduction. The device 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 AP64202 also 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 time.

The device is housed in a SO-8EP (Standard) package with a wide input voltage range of 3.8V to 40V.

Features

  • 3.8V to 40V VIN
  • 0.8V to VIN Output voltage (VOUT)
  • 2A Continuous output current
  • 0.8V ±1% Reference Voltage
  • 25µA Low quiescent current (pulse frequency modulation)
  • 100kHz to 2.2MHz Adjustable switching frequency
  • 100kHz to 2.2MHz External clock synchronization
  • Adjustable soft-start time
  • Up to 88% Efficiency at 5mA light load
  • 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)
    • Output Overvoltage Protection (OVP)
    • Cycle-by-cycle peak current limit
    • Thermal shutdown
  • Totally lead-free & fully RoHS compliant
  • Halogen and antimony free, “green” device

Applications

  • Distributed power bus supplies
  • Power tools and laser printers
  • White goods and small home appliances
  • Home audio
  • Network systems
  • Consumer electronics
  • General purpose point of load

Typical Application Circuit

Application Circuit Diagram - Diodes Incorporated AP64202 Synchronous Buck Converter
Paskelbta: 2021-06-24 | Atnaujinta: 2022-03-11