CM6901

SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs

2012/05/09 Rev2.0

Champion Microelectronic Corporation

Page 3

PIN DESCRIPTION

Operating Voltage

Pin No.

Symbol

Description

Min.

Typ.

Max.

Unit

1

RSET

External resistor which convert FEAO voltage signal into current

signal for frequency modulation. SR is PWMing Control , when

RSET lower than 1.5V.

0

5.5

V

2

VFB

Non-inverting input into resonant error amplifier .

0

2.5

3

V

3

FEAO

Resonant error amplifier output and compensation node for

frequency modulation control.

0

5.5

V

4

D_IN-

Inverting input into PWM error amplifier.

0

6

V

5

D_IN+

Non-inverting input into PWM error amplifier.

0

6

V

6

DEAO

PWM error amplifier output and compensation node for PWM

control.

0

4.5

V

7

CSS

Soft start for FM/PWM operation with 1V enable threshold. Also,

use for auto-restart operation during current limit.

0

5.5

V

8

ILIM

Input to current comparator with 1V threshold.

0

1

1.25

V

9

RTCT

Oscillator timing components which set the minimum frequency.

1.2

3

V

10

GND

Ground

11

SDRVB

Synchronous MOSFET driver output.

-0.3

VCC

V

12

SDRV

Synchronous MOSFET driver output.

-0.3

VCC

V

13

PRIDRVB

Primary side MOSFET driver output.

-0.3

VCC

V

14

PRIDRV

Primary side MOSFET driver output.

-0.3

VCC

V

15

VCC

Positive supply for the IC

10

15

20

V

16

VREF

Buffered output for the 7.5V voltage reference

7.5

V