ACT513 ACTIVE-SEMI | Alldatasheet
Document overview
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Technical content
Innovative PowerTM - 1 - www.active-semi.com Copyright © 2012 Active-Semi, Inc. ActiveQRTM is a trademark of Active-Semi. Product Brief, 05-Dec-12 ActiveQRTM Quasi-Resonant PWM Controller
FEATURES
- CCM and Quasi-Resonant Operation
- Adjustable up to 45kHz Switching Frequency
- OCP/OLP Protection
- Integrated Patented Frequency Foldback Technique
- Integrated Patented Line Compensation
- Built-in Soft-Start Circuit
- Line Under-Voltage, Thermal, Output Over- voltage, Output Short Protections
- Current Sense Resistor Short Protection
- Transformer Short Winding Protection
- 100mW Standby Power
- Complies with Global Energy Efficiency and CEC Average Efficiency Standards
- Tiny SOT23-6 Packages
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 ActiveQR TM technology, ACT513 increases the average system efficiency compared to conventional solutions and exceeds the latest ES2.0 efficiency standard with good margin. 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. ACT513 is to achieve no overshoot and very short rise time even with big capacitive load with the built- in fast and soft start process. 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. Quasi- Resonant (QR) operation mode can effectively improve efficiency during DCM operation, and reduce the EMI noise and further reduce the components in input filter. ACT513 is for application up to 60 Watt. Figure 1: Simplified Application Circuit ACT513
Product Brief, 05-Dec-12 Innovative PowerTM - 2 - www.active-semi.com Copyright © 2012 Active-Semi, Inc. ActiveQRTM is a trademark of Active-Semi. PIN CONFIGURATION PIN DESCRIPTIONS PART NUMBER TEMPERATURE RANGE PACKAGE PINS PACKING METHOD TOP MARK ACT513US-T -40°C to 85°C SOT23-6 6 TUBE & REEL FSIT SOT23-6 ACT513US
ORDERING INFORMATION
1 CS Current Sense Pin. Connect an external resistor (RCS) between this pin and ground to set peak current limit for the primary switch. 2 GND Ground. 3 GATE Gate Drive. Gate driver fo r the external MOSFET transistor. 4 VDD Power Supply. This pin provides bias power fo r 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 Feedback Pin. Connect this pin to opt ocouplers’s collector for output regulation.
Product Brief, 05-Dec-12 Innovative PowerTM - 3 - www.active-semi.com Copyright © 2012 Active-Semi, Inc. ActiveQRTM is a trademark of Active-Semi. Figure 4: Universal VAC Input, 12V/2A Output Adaptor
Product Brief, 05-Dec-12 Innovative PowerTM - 4 - www.active-semi.com Copyright © 2012 Active-Semi, Inc. ActiveQRTM is a trademark of Active-Semi. 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, 100 Ω, 0805, 5% 1 TY-OHM
22 R4 Chip Resistor,4.7 Ω, 0805, 5% 1 TY-OHM 23 R5 Chip Resistor,54.9k Ω, 0805, 1% 1 TY-OHM 24 R6 Chip Resistor, 11.8K Ω, 0805, 1% 1 TY-OHM
25 R7,R8 Chip Resistor, 1M Ω, 5% 2 TY-OHM
26 R9 metal Resistor, 1.27 Ω, 1W, 1% 1 TY-OHM
27 R10 Chip Resistor, 510 Ω, 1/4W, 5% 1 TY-OHM
28 R12,R14 Chip Resistor, 3.3K Ω, 0805, 5% 2 TY-OHM
29 R13 Chip Resistor, 10 Ω, 0805, 5% 1 TY-OHM
30 R15 Chip Resistor,24.3k Ω, 0805,1% 1 TY-OHM 31 R16 Chip Resistor,6.19K Ω, 0805, 1% 1 TY-OHM
32 Rgate Chip Resistor,330 Ω, 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 Table 1: ACT513 12V24W Bill of Materials