CM6901
SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs
PIN DESCRIPTION
Operating Voltage
Min.
External resistor which convert FEAO voltage signal into current
1
0
Pin No.
Symbol
Description
Typ.
Max.
5.5
Unit
V
RSET
signal for frequency modulation. SR is PWMing Control , when
RSET lower than 1.5V.
2
VFB
FEAO
Non-inverting input into resonant error amplifier .
Resonant error amplifier output and compensation node for
frequency modulation control.
0
2.5
3
V
3
0
5.5
V
4
D_IN-
D_IN+
Inverting input into PWM error amplifier.
0
6
V
5
Non-inverting input into PWM error amplifier.
PWM error amplifier output and compensation node for PWM
control.
0
6
V
6
DEAO
0
4.5
V
7
CSS
ILIM
RTCT
GND
SDRVB
SDRV
PRIDRVB
PRIDRV
VCC
VREF
Soft start for FM/PWM operation with 1V enable threshold. Also,
use for auto-restart operation during current limit.
Input to current comparator with 1V threshold.
Oscillator timing components which set the minimum frequency.
Ground
Synchronous MOSFET driver output.
Synchronous MOSFET driver output.
Primary side MOSFET driver output.
Primary side MOSFET driver output.
Positive supply for the IC
Buffered output for the 7.5V voltage reference
0
5.5
V
8
9
10
11
12
13
14
15
16
0
1.2
1
1.25
3
V
V
-0.3
-0.3
-0.3
-0.3
10
15
7.5
VCC
VCC
VCC
VCC
20
V
V
V
V
V
V
2009/11/02 Rev1.4
Champion Microelectronic Corporation
Page 3
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
