Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller General Description Features The AP3772H is a high performance AC/DC power supply controller for battery charger and adapter applications. The device uses Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies. • • • • • The AP3772H provides accurate constant voltage, constant current (CV/CC) regulation without requiring an opto-coupler and the secondary control circuitry. It also eliminates the need of loop compensation circuitry while maintaining good stability. The AP3772H can achieve excellent regulation and high average efficiency, yet meets no-load consumption less than 30mW. It can also achieve excellent dynamic performance while maintaining 30mW standby power with AP4340. • • • • • • AP3772H Primary Side Control for Tight Constant Current and Constant Voltage 30mW No-load Input Power Excellent Dynamic Performance with AP4340 Bipolar Junction Transistor (BJT) Driving Proprietary Adjustable Line Compensation for CC Variation Constant and Built-in 6%, 3% and No Cable Voltage Drop Compensation Enhanced Audio Noise Suppression Open Circuit Protection Over Voltage Protection Short Circuit Protection SOT-23-6 package Applications The AP3772H has a built-in fixed cable voltage drop compensation function. The magnitude of the cable compensation voltage is set as 3% of the rated output voltage. It also has an adjustable built-in line compensation function to achieve tight CC. • • • Adapters/Chargers for Cell/cordless Phones, PDAs, MP3 and Other Portable Devices LED Driver Standby and Auxiliary Power Supplies The AP3772H is available in SOT-23-6 package. SOT-23-6 Figure 1. Package Type of AP3772H Dec. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 1 Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller AP3772H Pin Configuration K6 Package (SOT-23-6) Pin 1 Mark 1 6 2 5 3 4 Figure 2. Pin Configuration of AP3772H (Top View) Pin Description Pin Number Pin Name 1 OUT 2 GND 3 VCC 4 CS 5 CPC 6 FB Dec. 2012 Function The OUT pin is used to turn on and turn off the power switch. When turning on the power switch, the OUT pin will output 30mA source current to support the base current of the power BJT. When turning off the power switch, the resistance between the OUT and GND will become to 5Ω The GND pin is the ground of the IC. When the power BJT is turned off, a fast reverse sinking current to the gate of BJT will flow out from this pin. Attention should be paid to in the PCB layout The VCC pin supplies the power for the IC. In order to get the correct operation of the IC, a capacitor with low ESR should be placed as close as possible to the VCC pin The CS is the current sense pin of the IC. The IC will turn off the power BJT according to the voltage on the CS pin. When the power BJT is on, a current is output from the CS pin which is proportional to the line voltage to realize the function of line compensation A capacitor more than 10nF should be connected to this pin. The voltage of CPC pin is linear to load of the system and it is used for the functions of cable voltage drop compensation and audio noise suppression The CV and CC regulation are realized based on the voltage sampling of this pin Rev. 1. 1 BCD Semiconductor Manufacturing Limited 2 Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller AP3772H Functional Block Diagram VCC 3 UVLO FB OVP & OCKP 6 PRO Regulator & Bias UVLO 0.1V COMP Tonsec Detector PFM TONS Dynamic Response Pro VFB Constant Voltage Control EA Dyn R Q CV_ctrl PFM Driver 1 OUT CC_ctrl S Line Compensation Shutdown Peak Current Control & LEB VREF1 Pre_Shutdown VREF2 CS 4 TONS Constant Current Control R Q CC_ctrl S Audio noise Suppression 2 GND Cable Compensation 5 CPC Figure 3. Functional Block Diagram of AP3772H Dec. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 3 Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller AP3772H Ordering Information AP3772H - Circuit Type G1: Green Cable Compensation Voltage A: 6% B: 3% C: 0 TR: Tape & Reel Package K6: SOT-23-6 Package SOT-23-6 Temperature Range Cable Compensation Voltage -40 to 85°C Part Number Marking ID 6% AP3772HAK6TR-G1 GBC 3% AP3772HBK6TR-G1 GKJ 0 AP3772HCK6TR-G1 GJD Packing Type Tape & Reel Tape & Reel Tape & Reel BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant and green. Absolute Maximum Ratings (Note 1) Parameter Supply Voltage CS, CPC to GND FB Input Voltage Source Current at OUT Pin Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 sec) Thermal Resistance (Junction to Ambient) Symbol Value Unit VCC VFB ISOURCE TJ TSTG -0.3 to 30 -0.3 to 7 -40 to 10 Internally Limited 150 -65 to 150 V V V A ºC ºC TLEAD 300 ºC θJA 200 ºC/W 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. Dec. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 4 Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller AP3772H Electrical Characteristics VCC =15V, TA=25°C, unless otherwise specified. Parameter Symbol Conditions UVLO SECTION Startup Threshold VTH (ST) Minimal Operating Voltage VOPR(MIN) STANDBY CURRENT SECTION Startup Current IST Operating Current ICC(OPR) DRIVE OUTPUT SECTION Sink ISINK Output Current Source ISOURCE Maximum Off Time tOFF(MAX) CURRENT SENSE SECTION Current Sense Threshold VCS1 Voltage at Heavy Load Leading Edge Blanking tLEB FEEDBACK INPUT SECTION Input Resistance of FB Pin RFB Feedback Threshold VFB LINE COMPENSATION SECTION Line Compensation gm Transconductance (Note 2) CABLE COMPENSATION SECTION Cable Voltage Compensation ∆VFB_CABLE /VFB % VCC=VTH (ST)-1V, Before startup Static current Apply 1V @ OUT pin The minimum power switch turn on time VFB=4V AP3772HA AP3772HB AP3772HC DYNAMIC FUNCTION SECTION Delay Time for Dynamic tD Function Trigger Voltage for VTRIGGER Dynamic Function PROTECTION SECTION Over Voltage Protection VFB(OVP) Maximum On Time of tonp Primary Side (MAX) Note 2: Line compensation voltage on CS pin: ΔVCS = V IN _ DC ⋅ Dec. 2012 Rev. 1. 1 Min Typ Max Unit 13 3 15.5 3.5 18 4.5 V V 0 0.2 0.6 µA 250 500 600 µA 150 30 14 330 40 18 500 50 25 mA mA ms 500 525 550 mV 300 500 650 ns 1 3.98 1.6 4.04 2 4.1 MΩ V 0.8 1.2 1.6 µS 5 2 6 3 0 7 4 % 110 150 200 µs 120 150 180 mV 7 8 9 V 20 35 50 µs N AUX R6 ⋅ ⋅ g m ⋅ R LINE N PRI R6 + R7 BCD Semiconductor Manufacturing Limited 5 Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller AP3772H Typical Performance Characteristics 800 40 35 600 Source Current (mA) Operating Current (µA) 700 500 400 300 30 25 200 100 10 15 20 25 20 10 30 15 20 Supply Voltage (V) Figure 4. Operating Current vs. Supply Voltage 30 Figure 5. Source Current vs. Supply Voltage 5.0 500 4.5 Operating Current (µA) Minimal Operating Voltage (V) 25 Supply Voltage (V) 4.0 3.5 3.0 450 400 350 2.5 2.0 -40 -20 0 20 40 60 80 100 120 300 -40 140 o 0 20 40 60 80 100 120 140 Ambient Temperature ( C) Figure 6. Minimal Operating Voltage vs. Ambient Temperature Dec. 2012 -20 o Ambient Temperature ( C) Figure 7. Operating Current vs. Ambient Temperature Rev. 1. 1 BCD Semiconductor Manufacturing Limited 6 Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller AP3772H Typical Performance Characteristics (Continued) 2.0 18 17 Start-up Voltage (V) Start-up Current (µA) 1.5 1.0 0.5 16 15 14 0.0 -40 -20 0 20 40 60 80 100 120 13 -40 140 -20 0 20 40 60 80 100 120 140 o Ambient Temperature ( C) o Ambient Temperature ( C) Figure 8. Start-up Current vs. Ambient Temperature Figure 9. Start-up Voltage vs. Ambient Temperature 30 2.00 Source Current (mA) FB Input Resistance (MΩ) 28 1.75 1.50 26 24 1.25 22 20 -40 1.00 -40 -20 0 20 40 60 80 100 120 140 -20 0 20 40 60 80 100 120 140 o Ambient Temperature ( C) o Ambient Temperature ( C) Figure 10. FB Input Resistance vs. Ambient Temperature Dec. 2012 Rev. 1. 1 Figure 11. Source Current vs. Ambient Temperature BCD Semiconductor Manufacturing Limited 7 Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller AP3772H Typical Performance Characteristics (Continued) 155 575 Delay Time (µs) Current Sense Voltage (mV) 600 550 150 145 525 500 -40 140 -20 0 20 40 60 80 100 120 -20 140 -10 0 o 20 30 40 50 60 70 80 o Ambient Temperature ( C) Ambient Temperature ( C) Figure 12. Current Sense Voltage vs. Ambient Temperature Figure 13. Delay Time vs. Ambient Temperature 600 50 45 575 40 LEB (ns) Primary Side Maximum On Time (µs) 10 35 550 30 525 25 20 -40 -20 0 20 40 60 80 100 120 500 -40 140 0 20 40 60 80 100 120 140 o Ambient Temperature ( C) Figure 14. Primary Side Maximum On Time vs. Ambient Temperature Dec. 2012 -20 Ambient Temperature ( C) o Figure 15. LEB vs. Ambient Temperature Rev. 1. 1 BCD Semiconductor Manufacturing Limited 8 Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller AP3772H Typical Performance Characteristics (Continued) Line Compensation Transconductance (µS) 4 Feedback Voltage (V) 3.9 3.8 3.7 3.6 3.5 10 15 20 25 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 -40 30 -20 0 20 40 60 80 100 120 140 o Ambient Temperature ( C) Supply Voltage (V) Figure 16. Feedback Voltage vs. Supply Voltage Dec. 2012 2.0 Figure 17. Line Compensation Transconductance vs. Ambient Temperature Rev. 1. 1 BCD Semiconductor Manufacturing Limited 9 Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller AP3772H Typical Application Figure 18. 5V/1A Output for Battery Charger of Mobile Phone (The AP4340 Is Used to Achieve Fast Dynamic Response) Dec. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 10 Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller AP3772H 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 4 2 3 0.300(0.012) 0.600(0.024) 1.500(0.059) 1.700(0.067) 2.650(0.104) 2.950(0.116) 6 0.200(0.008) Pin 1 Mark 1 0.700(0.028)REF 0.950(0.037)TYP 0.000(0.000) 0.150(0.006) 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) Dec. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 11 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. 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