
AS2214
Primary Side PWM Controller
Functional Block Diagram
ACP
LEN
AC
DETECT
V REG
(LEN)
6V
5V enab le
5V Reg.
VCC
V REG
50µA
UV LO
BOK
2V 5
(BULK_UV )
V REG
6µA
(CLR)
3V 95
SS
OV
SS LOGIC
(OV )
(RUN)
2V 5
ISNS
COMP
VFB
2V 5
2R
CM PWM
1V
R
(PWM)
VCC
OUT
RT/CT
OSC
SS PWM
(BLA NK)
GND
RAMP
x1
ASTEC Semiconductor
84