AP3102M-G1 Datasheet, PDF (1/17 Pages) BCD Semiconductor Manufacturing Limited – GREEN MODE PWM CONTROLLER

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. 2010 Rev. 1. 2
SOIC-8
DIP-8
Figure 1. Package Types of AP3102/V/L
BCD Semiconductor Manufacturing Limited
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