AiT Semiconductor Inc.

www.ait-ic.com

A7431

DC-DC CONVERTER BUCK (STEP-DOWN)

42V 3A CC/CV

REV1.1

- JAN 2016 RELEASED, SEP 2016 UPDATED -

- 10 -

Rectifier Diode

Use a Schottky diode as the rectifier to conduct current when the High-Side Power Switch is off. The Schottky

diode must have current rating higher than the maximum output current and a reverse voltage rating higher

than the maximum input voltage.

STABILITY COMPENSATION

Figure 5: Stability Compensation

components at the COMP pin, as shown in Figure 5.

The DC loop gain of the system is determined by the following equation:

OUT

I

VEA

COMP

VEA

EA

C

A

2

G

π

The second pole P2 is the output pole:

OUT

OUT

OUT

C

V

2

I

π

COMP

COMP

C

R

2

1

π

2

COMP

COMP

C

R

2

1

π