Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER General Description Features The AP3103 is a low startup current, current mode PWM controller with green-mode power-saving operation. The PWM switching frequency at normal operation is externally programmable and is trimmed to a tigh range. The dithering of frequency will improve EMI feature. When the load decreases, the frequency will reduce and when at a very low load, the IC will enter the ‘skip mode’ to minimize switching loss. About 20kHZ frequency switching is aviode the audible noise as well as reduding the standby loss. · · · · · · · · · The AP3103 features a lot of functions such as the Leading-Edge Blanking (LEB) of the current sensing, internal slope compensation and several protection functions including cycle-by-cycle current limit (OCP), VCC Over Voltage Protection (VOVP), OTP, OLP protection. · This IC is available in SOT-23-6 and DIP-8 packages. · AP3103 Bi-CMOS Process with Excellent Performance Very Low Start-up Current:(< 15µA) Current Mode Control Non-audible-noise Green-mode Control LEB (Leading-edge Blanking) on CS Pin Internal Slope Compensation Frequency Fold Back for High Average Efficiency Soft Switching for Reducing EMI Useful Pin Fault Protection: CS Pin Floating RI Pin Short to Ground RI Pin Floating FB/Opt-coupler Open/short Comprehensive System Protection Feature: VCC Over Voltage Protection (VOVP) Over Temperature Protection (OTP) Over Load Protection (OLP) Mini Size with Packages Applications · · · · Switching AC-DC Adapter/Charger ATX/BTX Auxiliary Power Set-top Box(STB) Power Supply Open Frame Switching Power Supply SOT-23-6 DIP-8 Figure 1. Package Types of AP3103 Feb. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 1 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER AP3103 Pin Configuration K Package (SOT-23-6) P Package (DIP-8) Pin 1 Dot by Marking GND 6 1 GATE 1 8 GND VCC 2 7 FB NC 3 6 NC SENSE 4 5 RI GATE FB 2 5 VCC RI 3 4 SENSE Figure 2. Pin Configuration of AP3103 (Top View) Pin Description Pin Number SOT-23-6 DIP-8 Pin Name 1 8 GND 2 7 FB (COMP) 3 5 RI 4 4 SENSE Function Signal ground. Current return for driver and control circuits Feedback. Directly connected to the opto-coupler Set the bias current to determine the normal switching frequency Current Sense 5 2 VCC Supply voltage of driver and control circuits 6 1 GATE Gate driver output 3, 6 NC No connection. These pins are not internally connected Feb. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 2 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER AP3103 Functional Block Diagram VCC 15V 8.8V 5 35.5V Internal Bias &VREF UVLO 28V O/S Protection D DFF CLKRB OSC VDD RI VCC OTP OVP OLP OVP 3 17.5V Driver QB 6 GATE 140℃ OTP 0.6V FB 2 Line Compensation 1.1V OLP OCP PWM GND 1 FOCP 0.85 V Soft Start 250ns LEB 4 SENSE Figure 3. Functional Block Diagram of AP3103 Feb. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 3 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER AP3103 Ordering Information AP3103 G1: Green Circuit Type TR: Tape and Reel Blank: Tube Package K: SOT-23-6 P: DIP-8 Package SOT-23-6 DIP-8 Temperature Range -40 to 85o o C -40 to 85 C Part Number Marking ID AP3103KTR-G1 GHL AP3103P-G1 AP3103P-G1 Packing Type Tape & Real Tube BCD Semiconductor's products, as designated with "G1" suffix in the part number, are RoHS compliant and Green. Feb. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 4 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER AP3103 Absolute Maximum Ratings (Note 1) Parameter Power Supply Voltage Gate Output Current Input Voltage to FB, SENSE pin Symbol Value Unit VCC 30 V IO 300 mA VFB, VSENSE -0.3 to 7 V SOT-23-6 250 DIP-8 100 SOT-23-6 500 DIP-8 1250 Thermal Resistance Junction to Ambient θJA Power Dissipation and Thermal Characteristic, SENSE at TA<25oC PD Operating Junction Temperature TJ -40 to150 TSTG 150 oC ESD (Human Body Model) 3000 V ESD (Machine Model) 300 V Storage Temperature Range o C/W mW o C 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. Recommended Operating Conditions Parameter Supply Voltage Ambient Operating Temperature Range Symbol Min Max Unit VCC 10 25 V TA -40 85 o Feb. 2010 Rev. 1. 0 C BCD Semiconductor Manufacturing Limited 5 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER AP3103 Electrical Characteristics VCC=16V, TA=25oC, unless otherwise specified. Parameter Symbol Conditions Min Typ Max Unit 5 15 µA Supply Voltage (VCC Pin) Start-up Current ISTART-UP VCC=14.8V VFB=0V, CL=1nF, RRI=100kΩ 1 2 3 VFB=3V, CL=1nF, RRI=100kΩ 0.65 1.65 2.65 UVLO (on) 14 15 16 V UVLO (off) 7.8 8.8 9.8 V VCC OVP 27 28 29 V 34 35.5 37 V 70 75 80 Operating Supply Current ICC VCC Clamp ICC=5mA mA PWM Section/Oscillator Section Maximum Duty Cycle Minimum Duty Cycle 0 % Oscillation Frequency RRI=100kΩ 60 Green Mode Frequency RRI=100kΩ 22 Frequency Temperature Stability -40oC to 85oC 5 % Frequency Voltage Stability VCC=12 to 30V 3 % 65 70 ±6 Frequency Dithering kHz kHz % Current Sense Section (SENSE Pin) 0.800 0.850 0.900 V LEB Time of SENSE 150 250 350 ns Delay to Output 50 150 250 Maximum SENSE Voltage VCS VFB=3.3V, RRI=100kΩ Soft-start Time 0.5 ns ms Feedback Input Section (FB Pin) The Ratio of Input Voltage to Current Sense Voltage Input Impedance Source Current VFB=0V 2.5 3 3.5 V/V 3 4.5 6 kΩ -0.5 -1 -1.5 mA Input Voltage for Zero Duty 1.5 V Output Section (GATE Pin) Output Low Level IO=20mA, VCC=12V Output High Level IO=20mA, VCC=12V Output Clamping 1 8 V V 16 17.5 19 V Rising Time CL=1nF, VCC=13V 120 220 320 ns Falling Time CL=1nF, VCC=13V 30 50 90 ns Feb. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 6 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER AP3103 Electrical Characteristics VCC=16V, TA=25oC, unless otherwise specified. Parameter Symbol Conditions Min Typ Max Unit Over Temperature Protection Section Shutdown Temperature 140 Temperature Hysteresis 20 oC o C Delay Time Section Delay 1 of Protection OLP 35 ms Delay 2 of Protection VCC OVP 25 µs Feb. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 7 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER AP3103 Typical Performance Characteristics 9.8 15.4 9.6 15.2 9.4 Shutdown Voltage (V) Start-up Voltage (V) 15.0 14.8 14.6 14.4 14.2 14.0 9.2 9.0 8.8 8.6 8.4 8.2 13.8 8.0 13.6 -40 -20 0 20 40 60 80 100 120 7.8 -60 140 -40 -20 o 40 60 80 100 120 140 160 Figure 5. Shutdown Voltage vs. Ambient Temperature 6.0 4.0 5.5 3.5 5.0 3.0 Operation Current (mA) Start-up Current (µA) 20 Ambient Temperature ( C) Figure 4. Start-up Voltage vs. Ambient Temperature 4.5 4.0 3.5 3.0 2.5 2.0 0 o Ambient Temperature ( C) 2.5 2.0 1.5 1.0 0.5 -40 -20 0 20 40 60 80 100 120 0.0 -40 o Ambient Temperature ( C) -20 0 20 40 60 80 100 120 140 o Ambient Temperature ( C) Figure 6. Start-up Current vs. Ambient Temperature Figure 7. Operation Current vs. Ambient Temperature Feb. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 8 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER AP3103 Typical Performance Characteristics (Continued) 28.4 75.0 72.5 28.2 28.0 67.5 fOSC (kHz) VCC OVP (V) 70.0 27.8 65.0 62.5 60.0 27.6 57.5 27.4 -40 -20 0 20 40 60 80 100 120 55.0 -40 140 -20 0 20 40 60 80 100 120 140 o o Ambient Temperature ( C) Ambient Temperature ( C) Figure 9. fOSC vs. Ambient Temperature Figure 8. VCC OVP vs. Ambient Temperature Feb. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 9 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER Operation Description The AP3103 is specifically designed for off-line ACDC power supply used in LCD monitor, notebook adapter and battery charger applications. It offers a cost effective solution with a versatile protection function. Start-up Current and UVLO pin, the relation between peak inductor current (IPK) and VFB is: I PK = (VFB − 0.8) / 3RS Leading-edge Blanking The start-up current of AP3103 is optimized to realize ultra low current (5µA typical) so that VCC capacitor can be charged more quickly. The direct benefit of low start-up current is the availability of using large startup resistor, which minimizes the resistor power loss for high voltage AC input. An UVLO comparator is included in AP3103 to detect the voltage on the VCC pin. It ensures that AP3103 can draw adequate energy from hold-up capacitor during power on. The turn-on threshold is 15V and the turnoff threshold is 8.8V. Oscillator The oscillation frequency is programmed by the value of resistor R1, connected from pin RI to ground. The resistor will make a constant current source to determine the oscillation frequency by charging and discharging an internal capacitor. Normally, RI pin should not be placed where exists too much noise, as the disturbance may make the IC work abnormally. The oscillation frequency can be expressed as: f ≈ AP3103 6500 ( kHz ) R1( kΩ ) A narrow spike on the leading edge of the current waveform can usually be observed when the power MOSFET is turned on. A 250ns leading-edge blank is built-in to prevent the false-triggering caused by the turn-on spike. During this period, the current limit comparator is disabled and the gate driver can not be switched off. FB Pin and Short Circuit Protection This pin is normally connected to the opt-coupler and always paralleled with a capacitor for loop compensation. When the voltage at this pin is great than 4.2V (such as output short to ground or the optcoupler is broken) and lasts for about 25ms, the IC will enter the protection mode. For AP3103, the system will enter hiccup mode to wait the VCC decreasing to low UVLO level, then the IC will try to restart until the failure removed. And when this voltage is less than 1.5V, the IC will stop the drive pulse immediately. Therefore, this feature can be used for short circuit protection, which makes the systemimmune from catastrophic failure. Normally, output short makes the VFB value to the maximum because the opt-coupler is cut off. System Protection and Pin Fault Protection The recommended oscillation frequency is 50 to 100 kHz from the EMI consideration. Current Sense Comparator and PWM Latch The AP3103 operates as a current mode controller; the output switch conduction is initiated by every oscillator cycle and is terminated when the peak inductor current reaches the threshold level established by the FB pin. The inductor current signal is converted to a voltage signal by inserting a reference sense resistor RS. The inductor current under normal operating conditions is controlled by the voltage at FB Feb. 2010 Rev. 1. 0 The AP3103 provides versatile system and pin fault protections. The OCP comparator realizes the cycleby-cycle current limiting (OCP).In universal input line voltage, the IC realizes the constant over load protection (OLP). VCC over voltage protection can be applied as the primary OVP or opt-coupler broken protection. The AP3103 also has pin fault connection protection including floating and short connection. The floating pin protection include the RI, SENSE, FB, etc; The short pin protection includes the RI pin short protection. When these pins are floated or RI pin is shorted to ground, PWM switching will be disabled, thus protecting the power system. BCD Semiconductor Manufacturing Limited 10 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER AP3103 Typical Application L2 + T1 R6 R4 C2 C6 C5 R13 C8 C7 -~ R5 ~ R19 C4 NTC R2 C3 U1 R14 R8 R3 VCC OUT R10 R9 CS C1 RI F1 VR1 R7 R15 C10 C11 R11 AP3103 R16 R12 AZ431 R17 C9 FB GND R18 U2 ~ Figure 10. Typical Application of AP3103 Feb. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 11 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER AP3103 Mechanical Dimensions SOT-23-6 Unit: mm(inch) 0° 2.820(0.111) 8° 3.020(0.119) 0.300(0.012) 0.400(0.016) 5 0.300(0.012) 0.600(0.024) 4 1.500(0.059) 1.700(0.067) 2.650(0.104) 2.950(0.116) 6 0.200(0.008) Pin 1 Dot by Marking 1 2 3 0.700(0.028)REF 0.950(0.037)TYP 0.000(0.000) 0.100(0.004) 1.800(0.071) 2.000(0.079) 0.100(0.004) 0.200(0.008) 0.900(0.035) 1.450(0.057) MAX 1.300(0.051) Feb. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 12 Preliminary Datasheet VERSATILE COST EFFECTIVE GREEN PWM CONTROLLER AP3103 Mechanical Dimensions (Continued) DIP-8 Unit: mm(inch) 0.700(0.028) 7.620(0.300)TYP 1.524(0.060) TYP 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 0.360(0.014) 0.560(0.022) 5° 6° 2.540(0.100) TYP 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) Note: Eject hole, oriented hole and mold mark is optional. Feb. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited 13 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE IMPORTANT NOTICE BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited reserves reserves the the right right to to make make changes changes without without further further notice notice to to any any products products or or specifispecifications herein. cations herein. BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited does does not not assume assume any any responsibility responsibility for for use use of of any any its its products products for for any any particular purpose, particular purpose, nor nor does does BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited assume assume any any liability liability arising arising out out of of the the application application or or use use of any of any its its products products or or circuits. circuits. BCD BCD Semiconductor Semiconductor Manufacturing Manufacturing Limited Limited does does not not convey convey any any license license under under its its patent patent rights rights or or other rights other rights nor nor the the rights rights of of others. others. MAIN SITE SITE MAIN - Headquarters BCD Semiconductor Manufacturing Limited BCD Semiconductor Manufacturing Limited - Wafer Fab No. 1600, Zi Xing Road, Shanghai ZiZhu Science-basedLimited Industrial Park, 200241, China Shanghai SIM-BCD Semiconductor Manufacturing Tel: Fax: +86-21-24162277 800,+86-21-24162266, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 REGIONAL SALES OFFICE Shenzhen OfficeSALES OFFICE REGIONAL - Wafer FabSemiconductor Manufacturing Limited BCD Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. - IC Design Group 800 Yi Shan Road, Shanghai 200233, China Corporation Advanced Analog Circuits (Shanghai) Tel: +86-21-6485 1491,YiFax: 0008200233, China 8F, Zone B, 900, Shan+86-21-5450 Road, Shanghai Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 Taiwan Office Shanghai Semiconductor Manufacturing Co., Ltd., Shenzhen Office BCD Taiwan Semiconductor Shenzhen SIM-BCD Office Office (Taiwan) Company Limited Unit A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan Shenzhen, 4F, 298-1, Guang Road,(Taiwan) Nei-Hu District, Taipei, Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.District, Shenzhen Office BCDRui Semiconductor Company Limited China Taiwan Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Tel: +86-755-8826 Tel: +886-2-2656 2808 Room E, 5F, Noble 7951 Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China Taiwan Fax: +86-755-88267951 7865 Fax: +886-2-2656 28062808 Tel: +86-755-8826 Tel: +886-2-2656 Fax: +86-755-8826 7865 Fax: +886-2-2656 2806 USA Office BCD Office Semiconductor Corp. USA 30920Semiconductor Huntwood Ave.Corporation Hayward, BCD CA 94544, USA Ave. Hayward, 30920 Huntwood Tel :94544, +1-510-324-2988 CA U.S.A Fax:: +1-510-324-2988 +1-510-324-2788 Tel Fax: +1-510-324-2788