R2A20132SP

Preliminary

REJ03D0921-0100 Rev.1.00 Oct 02, 2009

Page 2 of 8

Pin Arrangement

1

2

3

4

5

6

7

8

9

10

ZCD-M

ZCD-S

BO

VREF

SD1

ACDET

RT

RAMP

SD2

COMP

VCC

GD-M

GND

GD-S

OCP-M

OCP-S

OCT

FB(+)

OVP2

FB(–)

20

(Top view)

19

18

17

16

15

14

13

12

11

Pin Functions

Pin No.

Pin Name

Input/Output

Function

1

ZCD-M

Input

Master converter zero current detection input terminal

2

ZCD-S

Input

Slave converter zero current detection input terminal

3

BO

Input

Brownout input terminal

4

VREF

Output

Reference voltage output terminal

5

SD1

Input

Slave drop threshold voltage input terminal (for Lo line: 100 V)

6

ACDET

Output

AC hi voltage detection output terminal

7

RT

Input/Output

Oscillator frequency setting terminal

8

RAMP

Input/Output

Ramp waveform setting terminal

9

SD2

Input

Slave drop threshold voltage change terminal (for Hi line: 200 V)

10

COMP

Output

Error amplifier output terminal

11

FB(–)

Input

Error amplifier input (–) terminal

12

OVP2

Input

Over voltage detection terminal

13

FB(+)

Input

Error amplifier input (+) terminal

14

OTC

Input

Off time control input terminal

15

OCP-S

Input

Slave converter over current detection terminal

16

OCP-M

Input

Master converter over current detection terminal

17

GD-S

Output

Slave converter Power MOSFET drive terminal

18

GND

—

Ground

19

GD-M

Output

Master converter Power MOSFET drive terminal

20

VCC

Input

Supply voltage terminal