ap3902p-g1 BCD Semiconductor Manufacturing Limited, ap3902p-g1 Datasheet

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ap3902p-g1

Manufacturer Part Number
ap3902p-g1
Description
Low Power Pwm Switch For Off-line Smps
Manufacturer
BCD Semiconductor Manufacturing Limited
Datasheet
General Description
The AP3902 PWM power switch consists of a fixed-
frequency current-mode PWM controller and a high
voltage transistor. It is specifically designed for high
performance off-line switching power supplies or non-
isolated small household applications. Compared to
discrete MOSFET and PWM controller power supply
solutions, AP3902 solution offers advantages such as
fewer component numbers, smaller size, and lower
total cost.
In normal operation, the AP3902 features with a fixed
switching frequency. When the output power falls
below a given level, the circuits automatically switches
to a burst mode by skipping some switching cycles. In
case of failure modes like open loop, over voltage or
overload due to short circuit, the device switches into
auto restart mode which is controlled by the internal
protection unit.
This IC adopts frequency dithering technique to reduce
EMI.
The AP3902 is available in DIP-8 package.
Sep. 2008 Rev. 1.0
LOW POWER PWM SWITCH FOR OFF-LINE SMPS
Figure 1. Package Type of AP3902
DIP-8
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Features
Applications
Built-in NPN Transistor with 700V
Current Mode Control with Skip Cycle Capability
Low Operating Current: 0.45mA
Fixed Switching Frequency: 60kHz
Frequency Dithering for Low EMI
Short Circuit Protection
Open and Short Circuit Protection for Opto-
Coupler
Maximal Input Power less than 0.2W under no
Load
Output Power Range:
Induction Cooker
Set-Top Boxes/DVB
Adapters
Auxiliary Power Supplies
DVD
5W to 13W for Open Frame Application
5W to 10W for Adapter with Outer Enclosure
BCD Semiconductor Manufacturing Limited
Data Sheet
CBO
AP3902

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ap3902p-g1 Summary of contents

Page 1

... Adapter with Outer Enclosure 5W to 13W for Open Frame Application Applications · Induction Cooker · Set-Top Boxes/DVB · Adapters · Auxiliary Power Supplies · DVD DIP-8 Figure 1. Package Type of AP3902 BCD Semiconductor Manufacturing Limited 1 Data Sheet AP3902 CBO ...

Page 2

... The power supply of the IC and it is also used for the feedback control It is internally connected with the base terminal of internal NPN transistor It is internally connected with the collector terminal of internal NPN transistor No connection to IC Supply ground 2 Data Sheet GND Function BCD Semiconductor Manufacturing Limited AP3902 ...

Page 3

... V) Sep. 2008 Rev. 1.0 Start-up Current Source Bias UVLO + - PWM PWM Logic Short Circuit Slope Protection Discharge Logic Figure 3. Functional Block Diagram of AP3902 3 Data Sheet NPN OSC Transistor Emitter OUT Driver BCD Semiconductor Manufacturing Limited AP3902 GND ...

Page 4

... Lead Free AP3902P-G1 AP3902P-E1 Symbol V CES BCD Semiconductor Manufacturing Limited 4 Data Sheet AP3902 E1: Lead Free G1: Green Blank: Tube Marking ID Packing Type Green AP3902P-G1 Tube Value Unit 700 V -0 -0.3 to 6.3 V -0.3 to 6 1.3 W 150 o C -65 to 150 o C ...

Page 5

... LIM Data Sheet Min Typ Max 700 0 5.00 5.25 5.50 3.37 3.55 3.73 2.7 2.9 3.1 0.22 0.4 0.45 0.7 6 ± ± ± 8.5 11 4 680 800 920 BCD Semiconductor Manufacturing Limited AP3902 Unit kΩ kHz % Ω μA mA ...

Page 6

... JA R θ JC 500 480 460 440 420 400 380 360 340 320 300 60 80 100 120 - Figure 5. Operating Current vs. Ambient Temperature 60 80 100 Data Sheet Value - Ambient Temperature ( C) BCD Semiconductor Manufacturing Limited AP3902 Unit C/W 80 100 ...

Page 7

... Inductor, 300μH/0.3A D5, D6 Inductor, 10μH/1A D7 Transformer, EE-20 D8 Zener, 13V/1W 7 Data Sheet R11 Zener D8 C11 + + C8 12V/0.85A R13 U3 C7 R14 U2 R7 R15 R16 C5 Part Type Designator BCD Semiconductor Manufacturing Limited AP3902 C10 C11 ...

Page 8

... Sep. 2008 Rev. 1.0 DIP-8 1.524(0.060) TYP 3.200(0.126) 3.600(0.142) 0.510(0.020)MIN 2.540(0.100) TYP 0.130(0.005)MIN 6.200(0.244) 6.600(0.260) BCD Semiconductor Manufacturing Limited 8 Data Sheet AP3902 Unit: mm(inch) 0.700(0.028) 7.620(0.300)TYP 5° 0.204(0.008) 0.360(0.014) 8.200(0.323) ...

Page 9

... BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. ...

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