High Efficiency 18V, 6A Synchronous DC-DC Buck Converter with integrated MOSFET

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ByDinesh Kumar 0

AP62600 Synchronous Buck Converter

Diodes Incorporated has introduced the AP62600, a Synchronous DC-DC buck converter that delivers up to 6A of output current from a supply voltage of 4.5V to 18V. The converter can be used for point-of-load (POL) conversion in applications such as TVs, monitors, white goods, home appliances, consumer electronics, and large-scale integrated circuits. The device incorporates integrated high-side and low-side MOSFETs with 36mΩ and 14mΩ on-resistance, respectively.

Features of AP62600 Synchronous Buck Converter

  • VIN: 4.5V to 18V
  • Output Voltage (VOUT): 0.6V to 7V
  • 6A Continuous Output Current
  • 0.6V ± 1% Reference Voltage
  • 360μA Quiescent Current
  • Selectable Switching Frequency: 400kHz, 800kHz, and 1.2MHz
  • Selectable Operation Modes: Pulse Frequency Modulation (PFM), Ultrasonic Mode (USM)
    and Pulse Width Modulation (PWM)
  • Programmable Soft-Start Time
  • Proprietary Gate Driver Design for Best EMI Reduction
  • Power-Good Indicator
  • Precision Enable Threshold to Adjust UVLO
  • Protection Circuitry: Undervoltage Lockout (UVLO), Cycle-by-Cycle Valley Current Limit and Thermal Shutdown

AP62600 has been designed with a high level of feature integration, it delivers best-in-class EMI performance in a 2mm x 3 mm package, this makes it suitable for the smallest of products. The AP62600 has a power-good indicator that alerts the user if there is any fault condition. The device also has a programmable soft startup mode that controls the inrush current during power-up, this enables the designers to implement power sequencing when using multiple AP62600s to supply large integrated devices, such as FPGAs, ASICs, DSPs, and microprocessors. 

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