ACTIVE-SEMI ACT513US-T Activeqr quasi-resonant pwm controller Datasheet

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.
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