ST ISA020V1 User Manual

STEVAL-ISA020V1

3.5 W battery charger demonstration board based on the VIPer12AS-E and TSM101

Data Brief

Features

■Input voltage:

–VIN: 88 - 264 Vac

–frequency: 50-60 Hz

■Output voltages:

–VOUT = 0 to 7 V

–IOUT = 0.5 A

■Output signal: low battery check

Description

STEVAL-ISA020V1

The STEVAL-ISA020V1 battery charger demonstration board utilizes an AC-DC single output converter with approximately 3.5 W of power capability.

The simple and cost-effective design is based on the Viper12AS-E low power off-line SMPS primary switcher for power conversion, and the TSM101 voltage and current controller for monitoring the battery charge level.

July 2008	Rev 1	1/6
For further information contact your local STMicroelectronics sales office.		www.st.com

2/6

1

Circuit

R5

10R

D2

diagram Schematic .1 Figure

and schematic Circuit

layout PCB and schematic

+

C3

D3

LL4148

10uF

U3A

LL4148

Vout

50V

SFH617A-3

KME

1

P3

0..6.9V/0.5A

R8

C10 100nF

R10

1k

R12

8.2k

T1C

220R

5 8

9.7uH

21

9 turns

U2

8

TSM101CD

Vout

0.35 TEX-E

Vref

C12

6

+

1

+

1nF

C13

7

500V

C9

-

10uF

Y1

+

50V

R1

L1

V+

C4

100nF

R11

KME

PCB

C6

220uF

Vref

10k

88...264V~

10R

330uH

2

6

35V

2

3W

~

D1

190mA

100pF

LXY

1

P5

P1

1

L

S250

BC

500V

T1A

R9

+

-

Charge

L

+

3.1mH

T1D

1k

R14

-

160 turns

3.0uH

820R

P2

1

R13

250VAC

0.18 CuL

5 turns

N

C2

layout

N

~

0.5A

C1

+

R3

0.35 TEX-E

5

3

4

C11

1.8k

+

4.7uF

4.7uF

100R

1

7

100nF

400V

400V

KMG

KMG

EF16

D5

R15

R16

AL = 120nH

STPS160A

220R

Gap = 0.22mm

60V 1A

220R

1

P4

R17

1R

GND

8 7 6

5

VDD

R20

R18

1R

U1

Drain4 Drain3

Drain2

Drain1

4

U3B

22R

3

VDD

SFH617A-3

4

T1B

+

C5

Source2

R21

35uH

3

10uF

17 turns

FB

4.7k

50V

0.18 CuL

KME

2 1 Source1

VIPer12AS

C8

D7

22nF

AM00644v1

3

LL4148

4

STEVAL

ISA020V1-