Data Sheet GREEN MODE PWM CONTROLLER AP384XG General Description Features 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 power. · · · · · The AP384XG is available in SOIC-8 and DIP-8 packages. SOIC-8 Off-line Converter DC-DC Converter DVD/STB Power Supply Power Adapter CRT Monitor Power Supply DIP-8 Figure 1. Package Types of AP384XG BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 1 Data Sheet GREEN MODE PWM CONTROLLER AP384XG Pin Configuration P/M Package (DIP-8/SOIC-8) COMP 1 8 REF FB 2 7 VCC CS 3 6 OUTPUT RT/CT 4 5 GND Figure 2. Pin Configuration of AP384XG Pin Description Pin Number Pin Name Function 1 COMP 2 FB 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. 3 CS It is used either for current sense (normal mode) or skip cycle level selection (standby mode). 4 RT/CT The oscillator frequency and maximum output duty cycle are programmed by connecting resistor RT to REF and capacitor CT to ground. 5 GND 6 OUTPUT The ground pin. 7 VCC The power supply pin. 8 REF This is the reference output. It provides charging current for capacitor CT through resistor RT. This output directly drives the gate of a power MOSFET. Peak currents up to 1.0 A are sourced and sunk by this pin. BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 2 Data Sheet GREEN MODE PWM CONTROLLER AP384XG Functional Block Diagram VCC 7 34V GND UVLO 8 5V REF S/R 5 INTERNAL BIAS 2.50V RT/CT REF VREF GOOD LOGIC 4 6 OUTPUT OSC OVER TEMP PROTECT S ERROR AMP FB COMP CS 2R R 2 1 R 1V 3 Q Q PWM CURRENT LATCH SENSE COMPARATOR Figure 3. Functional Block Diagram of AP384XG Ordering Information AP384XG E1: Lead Free Blank: Tin Lead Circuit Type TR: Tape and Reel Blank: Tube Package M: SOIC-8 P: DIP-8 Package Temperature Range SOIC-8 -40 to 85oC DIP-8 -40 to 85oC Part Number Marking ID Packing Type Tin Lead Lead Free Tin Lead Lead Free AP3842/3/4/5GM AP3842/3/4/5GM-E1 3842/3/4/5GM 3842/3/4/5GM-E1 Tube 3842/3/4/5GM 3842/3/4/5GM-E1 Tape & Reel AP3842/3/4/5GP AP3842/3/4/5GP-E1 Tube AP3842/3/4/5GMTR AP3842/3/4/5GMTR-E1 AP3842/3/4/5GP AP3842/3/4/5GP-E1 BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 3 Data Sheet GREEN MODE PWM CONTROLLER AP384XG Absolute Maximum Ratings (Note 1, 2) Parameter Symbol Value Unit VCC 30 V IO ±1 A V(ANA) -0.3 to 6.3 V Error Amp Output Sink Current ISINK(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 TSTG -65 to 150 oC TA -40 to 85 oC TLEAD +300 oC 300 V Supply Voltage Gate Output Current Analog Inputs (pin2, 3) Storage Temperature Range Ambient Temperature Lead Temperature (Soldering, 10sec) ESD (Machine Model) 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 Symbol Oscillation Frequency f Ambient Temperature TA Min -40 Max Unit 500 KHz 85 oC BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 4 Data Sheet GREEN MODE PWM CONTROLLER AP384XG Electrical Characteristics (VCC=15V, RT=10kΩ CT=3.3nF, TA= -40 to 85oC, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit 4.95 5.00 5.05 V REFERENCE SECTION Reference Output Voltage VREF Total Output Variation TJ=25oC, IREF=1mA Line, Load, Temp. 5.10 V Line Regulation ∆VREF 12V ≤ VCC ≤25V 4 15 mV Load Regulation ∆VREF 1mA ≤ IREF ≤20mA 4 15 mV -100 -180 mA 0.2 0.4 mV/oC V Short Circuit Output Current ISC 4.9 TA=25oC Temperature Stability UNDER VOLTAGE LOCK OUT SECTION Start-up Threshold Minimum Operating Voltage AP3842G/AP3844G 15 16 17 AP3843G/AP3845G 7.8 8.4 9.0 AP3842G/AP3844G 8.5 10 11.5 AP3843G/AP3845G 7.0 7.6 8.2 80 V TOTAL STANDBY CURRENT SECTION µA Start-up Current VCC=14V 50 Operating Current VFB=0, VCS=0, CL=1nF 8 mA Standby Operating Current VFB=2.7V, VCS=0.5V 6 mA Zener Voltage ICC=25mA 30 34 V AP3842G/AP3843G 94 96 % AP3844G/AP3845G 46 48 PWM SECTION Maximum Duty Cycle Minimum Duty Cycle 50 0 % 57 KHz OSCILLATOR SECTION Oscillation Frequency f Oscillator Amplitude VOSC TJ=25oC Pin RT/CT, peak to peak 47 Temperature Stability Voltage Stability 12V ≤ VCC ≤ 25V Discharge Current VRT/CT = 2V (Note 4) 8.5 52 1.7 V 2 % 0.2 1 % 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. BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 5 Data Sheet GREEN MODE PWM CONTROLLER AP384XG Electrical Characteristics (Continued) Parameter Symbol Conditions Min Typ Max Unit 2.55 V ERROR AMPLIFIER SECTION VI VCOMP=2.5V 2.45 2.50 ISINK VCOMP=1.1V 6 10 mA -0.5 -0.8 mA Input Voltage Output Sink Current Output Source Current ISOURCE VCOMP=5V High Output Voltage VOH RL=15kΩ to GND Low Output Voltage VOL RL=15kΩ to pin REF Voltage Gain Power Supply Rejection Ratio PSRR 5 7 0.7 V 1.1 V 2V ≤ VO ≤ 4V 65 90 dB 12V ≤ VCC ≤ 25V 60 70 dB VCOMP=5V (Note 5) 0.9 1 1.1 V 0V ≤ VCS ≤ 4V (Note 5, 6) 2.85 3 3.15 V/V CURRENT SENSE SECTION Maximum Input Signal Gain VI(MAX) GV Power Supply Rejection Ratio PSRR Delay to Output Input Bias Current IBIAS Leading Edge Blanking Duration TLEB 12V ≤ VCC ≤ 25V (Note 5, 7) 70 VCS= 0 to 2V (Note 7) 150 250 ns -3 -10 µA VOUTPUT=High dB 250 ns OUTPUT SECTION Low Output Voltage High Output Voltage VOL VOH Rise Time tR Fall Time tF ISINK = 20mA 0.2 0.4 V ISINK = 200mA 1.4 2.2 V ISOURCE = 20mA 13 ISOURCE = 200mA 12 TJ=25oC, TJ=25oC, 13.5 V 13 V CL=1nF 150 250 ns CL=1nF 50 150 ns 200 220 µA SKIP CYCLE MODE SECTION Source Current (@ CS) VOUTPUT=Low, TJ=25oC 180 OVER-TEMPERATURE PROTECT SECTION Shutdown Temperature TSHUT 155 Temperature Hysteresis THYS 25 oC o C Note 5: Parameters are tested at trip point of latch with Vpin2 = 0. Note 6: Here gain is defined as: ∆VPin 1 A= , 0 ≤ Vpin3 ≤ 0.8V ∆VPin 3 Note 7: These parameters, although guaranteed, are not 100% tested in production. BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 6 Data Sheet GREEN MODE PWM CONTROLLER AP384XG Electrical Characteristics (Continued) VREF 4.7k 1k ERROR AMP ADJUST RT A 1 COMP REF 8 2 FB VCC 7 VCC 100k 0.1µF 5k 4.7k AP3842G 2N2222 ISENSE ADJUST 3 CS 4 RT/CT OUTPUT 6 GND 5 CT 1K 1W OUTPUT 0.1µF GND Figure 4. Basic Test Circuit Figure 4 is the basic test circuit for AP384XG. In testing, the high peak currents associated with capacitive loads necessitate careful grounding techniques. Timing and bypass capacitors should be connected close to pin 5 in a single point ground. The transistor and 5k potentiometer are used to sample the oscillator waveform and apply an adjustable ramp to pin 3. BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 7 Data Sheet GREEN MODE PWM CONTROLLER AP384XG Typical Performance Characteristics 100k 30 50K nF =1 RT (Ω) CT CT 3 0 =1 0 =1 10k nF CT Dead Time (µs) 10 0n 1 F 5K 0.3 1 2.2 4.7 10 22 100 100 47 1k 10k 60 5.015 50 Start-up Current (µA) Reference Voltage (V) VCC=15V, IO=1mA 5.005 5.000 4.995 4.990 40 AP3842G/44G 30 20 10 4.985 4.980 -40 1M Figure 6. Timing Resistor vs. Frequency Figure 5. Oscillator Dead Time vs. Timing Capacitor 5.010 100k Frequency (Hz) Timing Capacitor (nF) -20 0 20 40 60 80 100 0 120 0 o Ambient Temperature ( C) 2 4 6 8 10 12 14 16 18 Supply Voltage (V) Figure 7. Reference Voltage vs. Ambient Temperature Figure 8. Start-up Current vs. Supply Voltage BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 8 Data Sheet GREEN MODE PWM CONTROLLER AP384XG Typical Performance Characteristics (Continued) 90 4.0 80 3.5 Voltage Gain (dB) Saturation Voltage (V) 2.5 2.0 1.5 1.0 50 40 30 20 0.0 10 -0.5 50 100 150 200 250 300 350 400 450 500 550 0 10 600 Output Sink Current (mA) VCC=15V, TA=25 C 60 0.5 0 o 70 o VCC=15V, TA=25 C 3.0 100 1k 10k 100k 1M Frequency (Hz) Figure 9. Output Saturation Characteristics Figure 10. Error Amplifier Open-Loop Frequency Response 60 Start-up Current (µA) 50 AP3842G 40 30 20 -40 -20 0 20 40 60 80 100 120 o Ambient Temperature ( C) Figure 11. Start-up Current vs. Ambient Temperature BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 9 Data Sheet GREEN MODE PWM CONTROLLER AP384XG Typical Application NTC C14 100µ/400V C2 0.01µ 600V + R20 1M R2 1.2M JP1 AC 90 to 264V R3 39k 2W R19 10 C15 2.2n D3 8TQ100 T D1 FR107 C1 47µ L3 10µ C10 1000µ R21 3k + C9 2200µ D2 1N4001 7 JP2 12V/5A C3 0.1µ Vcc VCC REF 8 R12 100 R5 10k 2 FB 1 COMP 5 GND RT/CT 4 OUTPUT 6 C5 220p R14 130k CS 3 C4 3.3n C8 0.22µ C6 220p/600V R6 10 R7 2k R15 100 C7 680p Z1 1N5819 R16 8.2k Q1 IRF830 U3 AZ431 U1 AP384XG R13 15k Z2 SA12A + + R4 4.7 C11 1µ W1 1k R10 0.51/1W R9 10k R18 1k R17 2k R11 820 U2 PC817 Figure 12. Typical Application of AP384XG in AC/DC Converter BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 10 Data Sheet GREEN MODE PWM CONTROLLER AP384XG Mechanical Dimensions SOIC-8 Unit: mm(inch) 4.800(0.189) 5.000(0.197) 7° 0.320(0.013) 1.350(0.053) 1.750(0.069) 8° 8° 7° 0.675(0.027) 0.725(0.029) D 5.800(0.228) 1.270(0.050) 6.200(0.244) TYP D 20:1 0.300(0.012) R0.150(0.006) 0.100(0.004) φ 0.800(0.031) 0.200(0.008) 0° 8° 1.000(0.039) 3.800(0.150) 4.000(0.157) 1° 5° 0.330(0.013) 0.510(0.020) 0.900(0.035) R0.150(0.006) 0.190(0.007) 0.250(0.010) BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 11 Data Sheet GREEN MODE PWM CONTROLLER AP384XG Mechanical Dimensions (Continued) DIP-8 Unit: mm(inch) 0.700(0.028) 7.620(0.300)TYP 1.524(0.060) TYP 6° 5° 6° 3.200(0.126) 3.600(0.142) 3.710(0.146) 4.310(0.170) 4° 4° 0.510(0.020)MIN 3.000(0.118) 3.600(0.142) 0.204(0.008) 0.360(0.014) 8.200(0.323) 9.400(0.370) 0.254(0.010)TYP 2.540(0.100) TYP 0.360(0.014) 0.560(0.022) 0.130(0.005)MIN 6.200(0.244) 6.600(0.260) R0.750(0.030) Φ3.000(0.118) Depth 0.100(0.004) 0.200(0.008) 9.000(0.354) 9.400(0.370) BCD Semiconductor Manufacturing Limited Aug. 2005 Rev. 1. 2 12 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 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 products or specifications herein. BCD Semiconductor 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 Limited does not convey any license under its patent rights or other rights nor the rights of others.