Diodes AP3106 - Manual (Page 3)

Preliminary Datasheet
HIGH VOLTAGE GREEN MODE PWM CONTROLLER AP3106
Sep. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
3
Functional Block Diagram
Soft
Driver
18V
QB D
CLK
RB
DFF OSC with
Frequency Dithering
2R2
OCP
0.85V
Burst
Mode
PWM
OLP
OLP
OLP
OTP
VCC OVP
28V
VCC OVP OVP
UVLO
UVLO
16V
Internal Bias
0.3V
PG
25 s
Filter
4ms
Soft Start
OTP
140℃
&VREF
FOCP
FB
UVLO
Relative Blocks
35V
Protection
O/S
35 ms Timer
OLP
SCP
8.6V
R2
1.1V
VCC
6
FB
2
GND
4 SENSE
3
GATE
5
RI
1
HV
7
250ns LEB
R3
R1
VCC
Line Sense
Line Sense
Line Sense
Figure 3. Functional Block Diagram of AP3106