AP62600 Synchronous Buck Converter

Diodes' synchronous buck converter achieves a fast transient response, easy loop stabilization, and low output voltage ripple

Diodes AP62600 Synchronous Buck Converter Diodes' AP62600 is a 6 A synchronous buck converter with a wide input voltage range of 4.5 V to 18 V. The device fully integrates a 36 mΩ high-side power MOSFET and a 14 mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion. The AP62600 device is used by minimizing the external component count due to its adoption of constant on-time (COT) control to achieve a fast transient response, easy loop stabilization, and low output voltage ripple. The AP62600 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 device is available in a V-QFN2030-12 (Type A) package.

Features

Voltage input: 4.5 V to 18 V
Output voltage (V_OUT): 0.6 V to 7 V
6 A continuous output current
0.6 V ±1% reference voltage
360 μA quiescent current
Selectable switching frequency
- 400 kHz
- 800 kHz
- 1.2 MHz
Selectable operation modes
- Pulse frequency modulation (PFM)
- Ultrasonic mode (USM)
- Pulse width modulation (PWM)

Programmable soft-start time
Proprietary gate driver design for best EMI reduction
Power-good indicator
Precision enable threshold to adjust undervoltage lockout (UVLO)
Protection circuitry
- UVLO
- Cycle-by-cycle valley current limit
- Thermal shutdown
Lead-free and fully RoHS compliant
Halogen and antimony-free (green device)