ACT513 Product Brief, 05-Dec-12 ActiveQRTM Quasi-Resonant PWM Controller ACT513 integrates comprehensive protection. In case of over temperature, over voltage, short winding, short current sense resistor, open loop an d overload conditions, it would enter into auto restart mode including Cycle-by-Cycle current limiting. FEATURES • CCM and Quasi-Resonant Operation • Adjustable up to 45kHz Switching Frequency • OCP/OLP Protection • Integrated Patented Frequency Foldback ACT513 is to achieve no overshoot and very short rise time even with big capacitive load with the builtin fast and soft start process. Technique • Integrated Patented Line Compensation • Built-in Soft-Start Circuit • Line Under-Voltage, Thermal, Output Over- In full load condition, ACT513 is able to be designed to work in both CCM mode and DCM mode to meet different types of applications. QuasiResonant (QR) operation mode can effectively improve efficiency during DCM operation, and reduce the EMI noise and further reduce the components in input filter. voltage, Output Short Protections • • • • Current Sense Resistor Short Protection Transformer Short Winding Protection 100mW Standby Power ACT513 is for application up to 60 Watt. Complies with Global Energy Efficiency and CEC Average Efficiency Standards Figure 1: • Tiny SOT23-6 Packages Simplified Application Circuit APPLICATIONS • AC/DC Adaptors/Chargers for Cell Phones, Cordless Phone, PDAs, E-books • Adaptors for Portable Media Player, DSCs, Set-top boxes, DVD players, records • Linear Adapter Replacements GENERAL DESCRIPTION The ACT513 is a high performance peak current mode PWM controller. ACT513 applies ActiveQRTM and frequency foldback technique to reduce EMI and improve efficiency. ACT513’s maximum design switching frequency is set at 45kHz. Very low standby power, good dynamic response and accurate voltage regulation is achieved with an opto-coupler and the secondary side control circuit. The burst mode operation enables low standby power of 100mW with small output voltage ripple. By applying frequency foldback and ActiveQRTM technology, ACT513 increases the average system efficiency compared to conventional solutions and exceeds the latest ES2.0 efficiency standard with good margin. Innovative PowerTM ActiveQRTM is a trademark of Active-Semi. -1- www.active-semi.com Copyright © 2012 Active-Semi, Inc. ACT513 Product Brief, 05-Dec-12 ORDERING INFORMATION PART NUMBER TEMPERATURE RANGE PACKAGE PINS PACKING METHOD ACT513US-T -40°C to 85°C SOT23-6 6 TUBE & REEL TOP MARK FSIT PIN CONFIGURATION SOT23-6 ACT513US PIN DESCRIPTIONS PIN NAME DESCRIPTION 1 CS 2 GND Ground. 3 GATE Gate Drive. Gate driver for the external MOSFET transistor. 4 VDD Power Supply. This pin provides bias power for the IC during startup and steady state operation. 5 VDET Valley Detector Pin. Connect this pin to a resistor divider network from the auxiliary winding to detect zero-crossing points for valley turn on operation. 6 FB Current Sense Pin. Connect an external resistor (RCS) between this pin and ground to set peak current limit for the primary switch. Feedback Pin. Connect this pin to optocouplers’s collector for output regulation. Innovative PowerTM ActiveQRTM is a trademark of Active-Semi. -2- www.active-semi.com Copyright © 2012 Active-Semi, Inc. ACT513 Product Brief, 05-Dec-12 Figure 4: Universal VAC Input, 12V/2A Output Adaptor Innovative PowerTM ActiveQRTM is a trademark of Active-Semi. -3- www.active-semi.com Copyright © 2012 Active-Semi, Inc. ACT513 Product Brief, 05-Dec-12 Table 1: ACT513 12V24W Bill of Materials ITEM REFERENCE DESCRIPTION QTY MANUFACTURER 1 U1 IC, ACT513, SOT23-6 1 Active-Semi 2 C1 Capacitor, Electrolytic, 82µF/400V, 18 × 20mm 1 Rubcon 3 C3 Capacitor, Ceramic,1000pF/1KV,DIP 1 POE 4 C4 Capacitor, Electrolytic,4.7µF/35V,5*11mm 1 KSC 5 C5,C6,C7 Capacitor, Solid, 470µF/16V, 8*16mm 3 Rubcon 6 C8 Capacitor, Ceramic, 0.1µF/50V,0805,SMD 1 POE 7 C9 Capacitor, Ceramic,1000pF/100V,0805,SMD 1 POE 8 Cfb Capacitor, Ceramic,100pF/50V,0805,SMD 1 POE 9 BD1 GBL10 2A/600V 4Pin DIP 1 Good-Ark 10 D5 Diode, Ultra Fast, FR107,1000V/1.0A, DO-41 1 Good-Ark 11 D6 RS1M SMD 1 Good-Ark 12 D8 Diode, Schottky, 60V/30A, SBR3060, DO-220 1 Diodes 13 Dgate Diode L4148 SMD 1 Good-Ark 14 LF1 CM Inductor, 50mH, UU10.5 1 SoKa 15 LF2 Axial Inductor, 0.75*5T, 5*7,Dip 200uH 1 SoKa 16 Q1 Mosfet Transisor, 04N65, TO-220F 1 Infineon 17 PCB1 PCB, L*W*T =49x68x1.6mm, Cem-1, Rev:A 1 Jintong 18 F1 Fusible, 2A/250V 1 TY-OHM 19 R1 Chip Resistor,22 Ω, SMD 0805, 5% 1 TY-OHM 20 R2 metal Resistor,100K Ω,DIP,1W,5% 1 TY-OHM 21 R3 Chip Resistor, 100Ω, 0805, 5% 1 TY-OHM 22 R4 Chip Resistor,4.7Ω, 0805, 5% 1 TY-OHM 23 R5 Chip Resistor,54.9kΩ, 0805, 1% 1 TY-OHM 24 R6 Chip Resistor, 11.8KΩ, 0805, 1% 1 TY-OHM 25 R7,R8 Chip Resistor, 1MΩ, 5% 2 TY-OHM 26 R9 metal Resistor, 1.27Ω, 1W, 1% 1 TY-OHM 27 R10 Chip Resistor, 510Ω, 1/4W, 5% 1 TY-OHM 28 R12,R14 Chip Resistor, 3.3KΩ, 0805, 5% 2 TY-OHM 29 R13 Chip Resistor, 10Ω, 0805, 5% 1 TY-OHM 30 R15 Chip Resistor,24.3kΩ, 0805,1% 1 TY-OHM 31 R16 Chip Resistor,6.19KΩ, 0805, 1% 1 TY-OHM 32 Rgate Chip Resistor,330Ω, 0805, 5% 1 TY-OHM 33 T1 ER28 Lm=4mH 1 34 CX1 X capacitance, 0.1µF/400V,X1 1 35 NTC Thermistor, SC053 1 TY-OHM 36 TVS Varistor, 10471 1 TY-OHM 37 CY1 Y capacitance, 1000pF/400V,Y1 1 SEC 38 U2 Opto-coupler, PC817C CTR=200 dip-4 1 Sharp 39 U3 Voltage Regulator, TL431A, Vref=2.5V TO-92 1 ST Innovative PowerTM ActiveQRTM is a trademark of Active-Semi. -4- www.active-semi.com Copyright © 2012 Active-Semi, Inc.