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Diodes Semiconductor Electronic Components Datasheet

AP3102L Datasheet

GREEN MODE PWM CONTROLLER

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AP3102L pdf
Preliminary Datasheet
GREEN MODE PWM CONTROLLER
General Description
Features
AP3102/V/L
The AP3102/V/L series is a green-mode PWM control-
ler with low start-up current. At normal operation, the
switching frequency is externally programmable and
trimmed to tight range, the frequency dithering
technique is also equipped to improve the EMI
performance. When the load is very low or zero, the IC
enters green mode and skip mode to minimize switch-
ing loss. In skip mode, the PWM switching frequency
is about 20kHz to avoid the audible noise and reduce
the standby loss.
The AP3102/V/L series features a lot of functions such
as the Leading-Edge Blanking (LEB) of the current
sensing, internal slope compensation, line compensa-
tion, and several protection functions including cycle-
by-cycle current limit (OCP), over voltage protection
(VCC or line voltage), OTP, OLP and brownout pro-
tection.
The AP3102/V/L series provides 3 different versions
with optional protection functions. AP3102 has exter-
nal trigger latch shutdown only (VOVP and OLP are
auto recoverable). AP3102V supports both VOVP and
external latch shutdown. AP3102L provides latch shut-
down control for VOVP, OLP and external trigger.
This IC is available in SOIC-8 and DIP-8 packages.
· Bi-CMOS Process with Excellent Performance
· Very Low Start-up Current: 5µA typical
· Current Mode Control
· Non-audible-noise Green Mode Control
· Frequency Foldback for High Average Efficiency
· Internal Slope Compensation
· Programmable Brownout Protection
· Programmable Line Compensation
· Useful Pin Fault Protection:
SENSE Pin Floating
RI Pin Short to Ground
RI Pin Floating
· Smart Latch/Auto-recoverable Protection Option
· Comprehensive Protection Feature:
VCC Over Voltage Protection (VOVP)
Line Over Voltage Protection (LOVP)
Over Temperature Protection (OTP)
Over Load Protection (OLP)
· Internal Soft Start Function During Start-up
· 500mA Gate Output Current Capability
Applications
· Switching AC-DC Adapter
· LCD Monitor/TV Power
· Open Frame Switching Power Supply
Jan. 2013 Rev. 1. 4
SOIC-8
DIP-8
Figure 1. Package Types of AP3102/V/L
BCD Semiconductor Manufacturing Limited
1


Diodes Semiconductor Electronic Components Datasheet

AP3102L Datasheet

GREEN MODE PWM CONTROLLER

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AP3102L pdf
GREEN MODE PWM CONTROLLER
Pin Configuration
M Package
(SOIC-8)
GND
FB
BOK
RI
1
2
3
4
8 GATE
7 VCC
6 SENSE
5 ADJ
Preliminary Datasheet
AP3102/V/L
P Package
(DIP-8)
GND
FB
1
2
BOK 3
RI 4
8 GATE
7 VCC
6 SENSE
5 ADJ
Figure 2. Pin Configuration of AP3102/V/L (Top View)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
GND
FB
BOK
RI
ADJ
SENSE
VCC
GATE
Function
Signal ground. Current return for driver and control circuits
Feedback. Directly connected to the opto-coupler
Brownout Protection Pin. Connected to a resistor divider from the ground to bulk
capacitor for setting the brownout level and line compensation. When the voltage of
this pin is lower than 0.5V and lasts 35ms, the PWM signal will be off and system
enters the auto recoverable protection mode (hiccup mode). Moreover this pin is also
for the line OVP (trigger level is 4V) and line compensation (compensate the current
sense for over load protection.)
Set the bias current to determine the normal switching frequency
To adjust the level of skip cycle. When its value is greater than 4.5V, the system will be
latched
Current sense
Supply voltage of driver and control circuits
Gate driver output
Jan. 2013 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
2


Part Number AP3102L
Description GREEN MODE PWM CONTROLLER
Maker BCD
Total Page 17 Pages
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