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Diodes Incorporated AP63300/01 Synchronous Buck Converters

Diodes Incorporated AP63300/01 Synchronous Buck Converters deliver 3A continuous output current with a 3.8V to 32V wide input range. These converters provide high efficiency step-down DC-DC conversion through full integration of 75mΩ high-side power MOSFET and a 40mΩ low-side power MOSFET. The design of these converters is optimized for Electromagnetic Interference (EMI) reduction and a proprietary gate driver scheme resists switching-node ringing without sacrificing MOSFET turn-on/off times. This reduces high-frequency radiated EMI noise caused by MOSFET switching.

The AP63300 offers Pulse Frequency Modulation (PFM) with up to 88% efficiency @5mA light-load, whereas the AP63301 supports Pulse Width Modulation (PWM) regardless of output load. These buck converters exhibit a protection circuitry that includes Under-Voltage Lockout (UVLO), Output Overvoltage Protection (OVP), cycle-by-cycle peak current limit, and thermal shutdown. The AP63300/01 synchronous buck converters come in an industrial standard TSOT26 package. Typical applications include distributed power supplies, flat-screen TVs and monitors, home audio, network systems, gaming consoles, power tools, laser printers, and consumer electronics.

Features

  • VIN 3.8V to 32V
  • 3A continuous output current
  • 0.8V ± 1% reference voltage
  • 22µA low quiescent current (PFM)
  • 500kHz switching frequency
  • Supports Pulse Frequency Modulation (PFM)
    • AP63300
    • Up to 88% efficiency at 5mA light load
  • Pulse Width Modulation (PWM), regardless of output load
    • AP63301
  • Proprietary gate driver design for EMI reduction
  • Frequency Spread Spectrum (FSS) to reduce EMI
    • AP63300
  • Low-Dropout (LDO) mode
  • Power good indicator with 5MΩ internal pull-up
  • Precision enables the threshold to adjust UVLO
  • Protection circuitry
    • Undervoltage Lockout (UVLO)
    • Output Undervoltage Protection (UVP)
    • Cycle-by-cycle peak current limit
    • Thermal shutdown
  • Totally lead-free & fully RoHS compliant 
  • Halogen and antimony-free "Green" device 

Applications

  • 5V, 12V, and 24V distributed power Bus supplies
  • Flat-screen tv sets and monitors
  • Power tools and laser printers
  • White goods and small home appliances
  • FPGA, DSP, and ASIC supplies
  • Home audio
  • Network systems
  • Gaming consoles
  • Consumer electronics
  • General-purpose point of load

Typical Application Circuit

Application Circuit Diagram - Diodes Incorporated AP63300/01 Synchronous Buck Converters

Associated Boards

Diodes Incorporated AP63300/1-EVM Evaluation Boards

Evaluate the AP63300/AP63301 3A synchronous buck converters.

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Publicado: 2019-12-06 | Actualizado: 2023-08-10