AN2620 datasheet(9/20 Pages) STMICROELECTRONICS

Part #	AN2620

Description	3 A high-frequency synchronous 900 kHz

PDF	20 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

9 / 20 page

AN2620

Board usage recommendation

Doc ID 13883 Rev 3

9/20

Board usage recommendation

The board shown in Figure 2 is provided with a Kelvin connection which means that for each

pin two lines are available, one used to supply or sink current and the other one used to

perform the needed measurement.

The ST1S10 inhibit pin should be connected to GND or Vin, by a jumper, in order to turn off

or on the device.

If the SYNC pin is not used, it is better to connect to GND to avoid input noise to the device.

Figure 2.

ST1S10 demonstration board typical diagram

5 4-8

Vout

SYNC

Vin

GND

2-3=INH-OFF

1-2=INH-ON

IC1

ePad*

R1=10 kΩ

R2=2 kΩ

R3=10 kΩ

C1=4.7µF

C2=22µF

C3=0.1µF

L1=3.3 µH

IC1=ST1S10

*ePad Connected to GND

GND

Vout

12Vin

5Vout

AN2620 Datasheet(PDF) 9 Page - STMicroelectronics