XLSEMI

Datasheet

2.1A 100KHz 90V Buck DC to DC Converter

XL7056

Rev 1.2

www.xlsemi.com

3

Function Block

Figure3. Function Block Diagram of XL7056

Typical Application Circuit

XL7056

L1 100uH/3A

CIN

100uF

/100V

C2

105

R2

10K

1%

R1

3.3K

1%

D1

FSV10150

SW

FB

GND

VIN

VIN

10V~80V

7

4

2

1

CFF

10nF

COUT

220uF

/16V

R3

0.035Ω 1%

C1

104

VOUT

5V/0~2.1A

INPUT

10V~80V

OUTPUT 5V/0~2.1A

VOUT=1.25*(1+R2/R1)

CSP

5

3

CSN

CC

105

VC

6

R3 for limit maximum output current, R3 choose 0.035ohm in VOUT≤5V application; R3

choose 0.055ohm in VOUT>5V application.

Figure4. XL7056 Typical Application Circuit