Document
Data Sheet
GREEN MODE PWM CONTROLLER General Description
Features
AP384XG
The AP384XG is a Green Mode PWM controller. It is specially designed for off-line AC-DC adapter and battery charger applications where both needs for low standby power and high efficiency in normal operation are required. In a well designed product, the AP384XG is capable to allow the system consuming only 0.5W power in standby mode.
In normal operation, the AP384XG features adjustable frequency by using an external resistor and capacitor combination. When output power falls below a given level, the IC automatically switches to the skip mode, which works by skipping switching cycles. The AP384XG also features low start-up and low standby operating current for its special topology.
· Green Mode PWM Controller to Support the "Blue Angel" Norm
· Adjustable Skip Cycle Mode Operation · Low Start-up Current: 50μA (Typ.) · Low Standby Operating Current: 6mA · Internal Leading Edge Blanking · Adjustable Oscillator Frequency up to 500KHz · Totem Pole Output · Under Voltage Lock Out (UVLO) · Over-Temperature Protection · Pin to Pin Replacement for AZ384XA
Applications
The AP384XG provides accurate protection against over-temperature, over-current and maximal output · Off-line Converter
power.
· DC-DC Converter
· DVD/STB Power Supply
The AP384XG is available in SOIC-8 and DIP-8 · Power Adapter
packages.
· CRT Monitor Power Supply
Option 1
SOIC-8
Option 2
DIP-8
Figure 1. Package Types of AP384XG
Jul. 2013 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
1
GREEN MODE PWM CONTROLLER Pin Configuration
M Package (SOIC-8)
COMP 1 FB 2 CS 3
RT/CT 4
8 REF 7 VCC 6 OUTPUT 5 GND
Data Sheet AP384XG
P Package (DIP-8)
COMP 1 FB 2 CS 3
RT/CT 4
8 REF 7 VCC 6 OUTPUT 5 GND
Figure 2. Pin Configuration of AP384XG (Top View)
Pin Description
Pin Number 1 2
3 4
5 6
7 8
Pin Name COMP FB
CS RT/CT
GND OUTPUT
VCC REF
Function This pin is the Error Amplifier output and is made available for loop compensation. The inverting input of the Error Amplifier. It is normally connected to the switching power supply output through an external resistor divider. It is used either for current sense (normal mode) or skip cycle level selection (standby mode). The oscillator frequency and maximum output duty cycle are programmed by connecting resistor RT to REF and capacitor CT to ground. The ground pin. This output directly drives the gate of a power MOSFET. Peak currents up to 1.0 A are sourced and sunk by this pin. The power supply pin. This is the reference output. It provides charging current for capacitor CT through resistor RT.
Jul. 2013 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
2
GREEN MODE PWM CONTROLLER Functional Block Diagram
VCC 7 GND 5
34V 2.50V
UVLO S/R
5V REF
RT/CT 4
FB 2 COMP 1
CS 3
ERROR AMP
VREF GOOD LOGIC
OSC
OVER TEMP PROTECT
SQ
2R
RQ
R
1V
PWM CURRENT LATCH
SENSE
COMPARATOR
INTERNAL BIAS
Data Sheet AP384XG
8 REF
6 OUTPUT
Figure 3. Functional Block Diagram of AP384XG
Ordering Information
AP384XG
-
Circuit Type
Package M: SOIC-8 P: DIP-8
E1: Lead Free G1: Green
TR: Tape and Reel Blank: Tube
Package
Temperature Range
Part Number
Lead Free
Green
Marking ID
Lead Free
Green
Packing Type
AP3842/3/4/5GM-E1 AP3842/3/4/5GM-G1 3842/3/4/5GM-E1 SOIC-8 -40 to 85oC
AP3842/3/4/5GMTR-E1 AP3842/3/4/5GMTR-G1 3842/3/4/5GM-E1
3842/3/4/5GM-G1 3842/3/4/5GM-G1
Tube Tape & Reel
DIP-8 -40 to 85oC AP3842/3/4/5GP-E1
AP3842/3/4/5GP-G1
AP3842/3/4/5GP-E1 AP3842/3/4/5GP-G1
Tube
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green packages.
Jul. 2013 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
3
GREEN MODE PWM CONTROLLER Absolute Maximum Ratings (Note 1, 2)
Data Sheet AP384XG
Parameter
Symbol
Value
Unit
Supply Voltage Gate Output Current Analog Inputs (pin2, 3)
VCC IO V(ANA)
30
V
±1
A
-0.3 to 6.3
V
Error Amp Output Sink Current Power Dissipation at TA< 25 oC (DIP-8) Power Dissipation at TA<25 oC (SOIC-8) Storage Temperature Range
ISINK(E.A) PD (Note 3) PD (Note 3)
TSTG
20
mA
1000
mW
460
mW
-65 to 150
oC
Ambient Temperature
TA
-40 to 85
oC
Lead Temperature (Soldering, 10sec)
TLEAD
+300
oC
ESD (Machine Model)
300
V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Note 2: All voltages are with respect to pin GND and all currents are positive into specified terminal.
Note 3: Board thickness 1.6mm, board dimension 90mm x 90mm.
Recommended Operating Conditions
Parameter Oscillation Frequency Ambient Temperature
Symbol f.