AP384XG BCDSEMI | Alldatasheet

Document overview

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Technical content

Features

  • 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 V oltage Lock Out (UVLO)
  • Over-Temperature Protection
  • Pin to Pin Replacement for AZ384XA

Applications

  • Off-line Converter
  • DC-DC Converter
  • DVD/STB Power Supply
  • Power Adapter
  • CRT Monitor Power Supply

Figure 1. Package Types of AP384XG

Figure 2. Pin Configuration of AP384XG

8 REF

7 VCC

6 OUTPUT

5 GND

1 COMP This pin is the Error Am plifier output and is made available for loop compensation. supply output through an external resistor divider. 3 CS It is used either for current sense (normal mode) or skip cycle level selection (standby mode). resistor RT to REF and capacitor CT to ground. sourced and sunk by this pin. This is the reference output. It provides charging current for capacitor CT through resistor RT.

GREEN MODE PWM CONTROLLER AP384XG Data Sheet Aug. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Functional Block Diagram Figure 3. Functional Block Diagram of AP384XG BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.

Ordering Information

GREEN MODE PWM CONTROLLER AP384XG Data Sheet Aug. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Parameter Symbol Value Unit Supply V oltage V CC 30 V Gate Output Current I O ± 1 A Analog Inputs (pin2, 3) V(ANA) -0.3 to 6.3 V Error Amp Output Sink Current I SINK(E.A) 20 mA Power Dissipation at TA< 25 oC (DIP-8) PD (Note 3) 1000 mW Power Dissipation at TA<25 oC (SOIC-8) PD (Note 3) 460 mW Storage Temperature Range T STG -65 to 150 oC Ambient Temperature T A -40 to 85 oC Lead Temperature (Soldering, 10sec) T LEAD +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 indi- cated under "Recommended Operat ing 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. Parameter Symbol Min Max Unit Oscillation Frequency f 500 KHz Ambient Temperature T A -40 85 oC Recommended Operating Conditions Absolute Maximum Ratings (Note 1, 2)

GREEN MODE PWM CONTROLLER AP384XG Data Sheet Aug. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited (VCC=15V , RT=10kΩ CT=3.3nF, TA= -40 to 85oC, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit REFERENCE SECTION Reference Output V oltage V REF TJ=25oC, IREF=1mA 4.95 5.00 5.05 V Total Output Variation Line, Load, Temp. 4.9 5.10 V Line Regulation ∆VREF 12V ≤ VCC ≤25V 4 15 mV Load Regulation ∆VREF 1mA ≤ IREF ≤20mA 4 15 mV Short Circuit Output Current I SC TA=25oC -100 -180 mA Temperature Stability 0.2 0.4 mV/oC UNDER VOLTAGE LOCK OUT SECTION Start-up Threshold AP3842G/AP3844G 15 16 17 V AP3843G/AP3845G 7.8 8.4 9.0 Minimum Operating V oltage AP3842G/AP3844G 8.5 10 11.5 V AP3843G/AP3845G 7.0 7.6 8.2 TOTAL STANDBY CURRENT SECTION Start-up Current V CC=14V 50 80 µA Operating Current V FB=0, VCS=0, CL=1nF 8 mA Standby Operating Current V FB=2.7V , VCS=0.5V 6 mA Zener V oltage I CC=25mA 30 34 V PWM SECTION Maximum Duty Cycle AP3842G/AP3843G 94 96 % AP3844G/AP3845G 46 48 50 Minimum Duty Cycle 0% OSCILLATOR SECTION Oscillation Frequency f TJ=25oC 47 52 57 KHz Oscillator Amplitude V OSC Pin RT/CT, peak to peak 1.7 V Temperature Stability 2 % V oltage Stability 12V ≤ VCC ≤ 25V 0.2 1 % Discharge Current V RT/CT = 2V (Note 4) 8.5 9.5 10.5 mA Note 4: This parameter is measured with RT=10kΩ to VREF, it contributes 0.3mA of current to the measured value. So the total current flowing into the CT pin will be 0.3mA higher than the measured value approximately.

Electrical Characteristics

GREEN MODE PWM CONTROLLER AP384XG Data Sheet Aug. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Parameter Symbol Conditions Min Typ Max Unit ERROR AMPLIFIER SECTION Input V oltage V I VCOMP=2.5V 2.45 2.50 2.55 V Output Sink Current I SINK VCOMP=1.1V 6 10 mA Output Source Current I SOURCE VCOMP=5V -0.5 -0.8 mA High Output V oltage V OH RL=15kΩ to GND 5 7 V Low Output V oltage V OL RL=15kΩ to pin REF 0.7 1.1 V V oltage Gain 2V ≤ VO ≤ 4V 65 90 dB Power Supply Rejection Ratio PSRR 12V ≤ VCC ≤ 25V 60 70 dB CURRENT SENSE SECTION Maximum Input Signal V I(MAX) V COMP=5V (Note 5) 0.9 1 1.1 V Gain GV 0V ≤ VCS ≤ 4V (Note 5, 6) 2.85 3 3.15 V/V Power Supply Rejection Ratio PSRR 12V ≤ VCC ≤ 25V (Note 5, 7) 70 dB Delay to Output V CS= 0 to 2V (Note 7) 150 250 ns Input Bias Current I BIAS VOUTPUT=High -3 -10 µA Leading Edge Blanking Duration T LEB 250 ns OUTPUT SECTION Low Output V oltage VOL ISINK = 20mA 0.2 0.4 V ISINK = 200mA 1.4 2.2 V High Output V oltage VOH ISOURCE = 20mA 13 13.5 V ISOURCE = 200mA 12 13 V Rise Time t R TJ=25oC, CL=1nF 150 250 ns Fall Time t F TJ=25oC, CL=1nF 50 150 ns SKIP CYCLE MODE SECTION Source Current (@ CS) VOUTPUT=Low, TJ=25oC 180 200 220 µA OVER-TEMPERATURE PROTECT SECTION Shutdown Temperature T SHUT 155 oC Temperature Hysteresis T HYS 25 oC A= , 0 ≤ Vpin3 ≤ 0.8V ∆VPin 3 Note 5: Parameters are tested at trip point of latch with Vpin2 = 0. Note 6: Here gain is defined as: ∆VPin 1 Note 7: These parameters, although guaranteed, are not 100% tested in production. Electrical Characteristics (Continued)

Figure 12. Typical Application of AP384XG in AC/DC Converter

GREEN MODE PWM CONTROLLER AP384XG Data Sheet Aug. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Mechanical Dimensions SOIC-8 Unit: mm(inch) R0.150(0.006) R0.150(0.006) 1.000(0.039) 0.330(0.013) 0.510(0.020) 4.800(0.189) 1.750(0.069) 0.100(0.004) 0.300(0.012) 0.900(0.035) 0.800(0.031) 0.200(0.008) 3.800(0.150) 4.000(0.157) 20:1 D 1.270(0.050) TYP 0.190(0.007) 0.250(0.010) D 5.800(0.228) 6.200(0.244) 0.675(0.027) 0.725(0.029) 0.320(0.013) φ

GREEN MODE PWM CONTROLLER AP384XG Data Sheet Aug. 2005 Rev. 1. 2 BCD Semiconductor Manufacturing Limited Mechanical Dimensions (Continued) Unit: mm(inch) R0.750(0.030) 0.254(0.010)TYP 0.130(0.005)MIN 8.200(0.323) 9.400(0.370) 0.204(0.008) 0.360(0.014) 7.620(0.300)TYP 0.700(0.028) 9.000(0.354) 9.400(0.370) 3.710(0.146) 4.310(0.170) 3.000(0.118) 3.600(0.142) 0.360(0.014) 0.560(0.022) 6.600(0.260) 3.200(0.126) 3.600(0.142) 0.510(0.020)MIN Φ3.000(0.118) Depth 0.100(0.004) 0.200(0.008) 1.524(0.060) TYP DIP-8

8F, B Zone, 900 Yi Shan Road, Shanghai 200233, PRC Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 BCD Semiconductor (Taiwan) Company Limited 4F, 298-1 Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656-2808, Fax: +886-2-2656-2806 IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any pro- ducts or specifications herein. BCD Se miconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limi- ted does not convey any license under its patent rights or other rights nor the rights of others. http://www.bcdsemi.com BCD Semiconductor Corporation 3170 De La Cruz Blvd, Suite # 105 Santa Clara, CA 95054-2411, U.S.A Tel: +1-408-988 6388, Fax: +1-408-988 6386 Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.

800 Yi Shan Road, Shanghai 200233, PRC Tel: +86-21-6485 1491, Fax: +86-21-5450 0008

Advanced Analog Circuits (Shanghai) Corporation