ACT513US-T

ACT513US-T Datasheet

ACT513 Rev 2, 24-Feb-14

Part	Datasheet
ACT513US-T	ACT513US-T (pdf)

Related Parts	Information
EA513US	EA513US

PDF Datasheet Preview
ActiveQRTM Quasi-Resonant PWM Controller • 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 Winding Short Protection • 100mW Standby Power • Complies with Global Energy Efficiency and CEC Average Efficiency Standards • Tiny SOT23-6 Packages ACT513 integrates comprehensive protection. In case of over temperature, over voltage, winding short, current sense resistor short, open loop and 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 a 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. QuasiResonant QR operation mode can improve efficiency during DCM operation, and reduce EMI and further reduce the components in input filter. ACT513 is ideal for applications up to 60 Watts. Figure 1: Simplified Application Circuit • 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 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 idle 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 Active-Semi Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. Copyright 2014 Active-Semi, Inc. ACT513 ORDERING INFORMATION ACT513US-T TEMPERATURE RANGE -40°C to 85°C PACKAGE PINS SOT23-6 PACKING METHOD TOP MARK TUBE & REEL FSIT PIN CONFIGURATION PIN DESCRIPTIONS SOT23-6 ACT513US PIN NAME Current Sense Pin. Connect an external resistor RCS between this pin and ground to set peak current limit for the primary switch. GND Ground. GATE Drive. Gate driver for the external MOSFET transistor. VDD Power Supply. This pin provides bias power for the IC during startup and steady state operation. 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. FB Feedback Pin. Connect this pin to optocouplers’s collector for output regulation. Innovative PowerTM Active-Semi Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. Copyright 2014 Active-Semi, Inc. ACT513 ABSOLUTE MAXIMUM RATINGSc FB, CS, VDET to GND VDD, GATE to GND PARAMETER Maximum Power Dissipation SOT23-6 VALUE to + 6 to + 28 UNIT Operating Junction Temperature -40 to 150 Junction to Ambient Thermal Resistance Storage Temperature 220 -55 to 150 Lead Temperature Soldering, 10 sec c Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods. ELECTRICAL CHARACTERISTICS VDD = 14V, LM = 4mH, RCS = VOUT = 12V, NP = 122, NS =14, NA =15, TA = 25°C, unless otherwise specified.

PDF Datasheet Preview

ActiveQRTM Quasi-Resonant PWM Controller
• 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 Winding Short Protection
• 100mW Standby Power
• Complies with Global Energy Efficiency and

CEC Average Efficiency Standards
• Tiny SOT23-6 Packages

ACT513 integrates comprehensive protection. In case of over temperature, over voltage, winding short, current sense resistor short, open loop and 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 a 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. QuasiResonant QR operation mode can improve efficiency during DCM operation, and reduce EMI and further reduce the components in input filter.

ACT513 is ideal for applications up to 60 Watts.

Figure 1:

Simplified Application Circuit
• 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

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 idle 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

Active-Semi Authorized Recipients and Customers

ActiveQRTM is a trademark of Active-Semi.

Copyright 2014 Active-Semi, Inc.

ACT513
ORDERING INFORMATION

ACT513US-T

TEMPERATURE RANGE
-40°C to 85°C

PACKAGE PINS

SOT23-6

PACKING METHOD

TOP MARK

TUBE & REEL

FSIT

PIN CONFIGURATION

PIN DESCRIPTIONS

SOT23-6 ACT513US

PIN NAME

Current Sense Pin. Connect an external resistor RCS between this pin and ground to set peak current limit for the primary switch.

GND Ground.

GATE Drive. Gate driver for the external MOSFET transistor.

VDD Power Supply. This pin provides bias power for the IC during startup and steady state operation.

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.

FB Feedback Pin. Connect this pin to optocouplers’s collector for output regulation.

Innovative PowerTM

Active-Semi Authorized Recipients and Customers

ActiveQRTM is a trademark of Active-Semi.

Copyright 2014 Active-Semi, Inc.

ACT513

ABSOLUTE MAXIMUM RATINGSc

FB, CS, VDET to GND VDD, GATE to GND

PARAMETER

Maximum Power Dissipation SOT23-6

VALUE
to + 6 to + 28

UNIT

Operating Junction Temperature
-40 to 150

Junction to Ambient Thermal Resistance Storage Temperature
220 -55 to 150

Lead Temperature Soldering, 10 sec
c Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods.

ELECTRICAL CHARACTERISTICS

VDD = 14V, LM = 4mH, RCS = VOUT = 12V, NP = 122, NS =14, NA =15, TA = 25°C, unless otherwise specified.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ACT513US-T Datasheet file may be downloaded here without warranties.

Datasheet ID: ACT513US-T 522460