Description

Update 2021-05-19: New revision (AMPLE1P1G) is now in stock. The potentiometer is now adjustable by hand, there’s an added V- sense point, increased OCP and improvements to ground noise.

The AMPLE1P is a 20A capable power card implemented using a single-phase step-down buck converter. It is optimized for operating from a 12V power supply but can work with down to 4.5V input. At the maximum output current and voltage, it achieves up to 91.5% efficiency. The output voltage can be controlled using the on-board variable resistor. By connecting it to an EVC2 device, the output voltage can be digitally monitored and controlled.

Product specification

• Output voltage adjustable 1.0-3.4 V using the on-board potentiometer (range can be increased by adding your own potentiometer)
• Nominal input voltage 12 V (functional from 4.5 V up to 16 V)
• Max output current 20 A (thermally limited). Active cooling may be required to achieve high output current.
• Efficiency at max output 91.5% (3.4 V, 20 A, 750 KHz)
• Switching frequency selectable between 300 KHz and 750 KHz
• OVP (+20%), OCP (24A) and OTP (Tj = 150*C)
• Output voltage can be monitored and adjusted using the EVC2 VMOD1-header
• Ships with a PCIE 6-pin power connector which can be soldered on by the user

Datasheet v03: https://1drv.ms/b/s!Atmpv-6qHr_6yL5CD2r0sQPNB-C6RA?e=ux8q8Q