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Overview
| Topology | Flyback Converter |
| Input voltage | 90-265 V |
| Switching frequency | 20-120 kHz |
| Output 1 | 12 V / 3.5 A |
| IC revision | 1 |
Description
The AP3301 EV1 board is a Quasi-Resonant Flyback converter, operating under CCM and DCM, the valley switching on mode function will be appeared at all DCM region of variable load & high input AC line voltage conditions, it is employed with the peak-current control & multi-mode PWM control functions. Based on above the high performances are optimized & achieved. It is designed to serve as an example for High Efficiency, cost-effective & components less consumer home appliance systems. Its output power is rated at 42W with 12V-3.5A and peak power can be reach to 48W at peak time. Its input power consumption is less than 100mW at no load and meets DOE VI and CoC Tier 2 energy efficiency requirement.
Features
- Very Low Start-up Current
- Multi-Mode Control
- Quasi-Resonant Operation with Valley Lock
- Fixed Frequency CCM Operation at Low Line Heavy Load
- Non-Audible-Noise Quasi-Resonant Control
- Internal Slope Compensation
- Soft Start During Startup Process
- Frequency Fold Back for High Average Efficiency
- Secondary Winding Short Protection with FOCP
- Frequency dithering for Reducing EMI
- VCC Maintain Mode
- Useful Pin Fault Protection: SENSE Pin Floating, FB/Opto-coupler Open/Short
- Comprehensive System Protection Feature: VCC Over Voltage Protection (VOVP), Over Load Protection (OLP)
- Brown Out Protection (BNO)
- Secondary Side OVP (SOVP)
- Mini Size Package of SOT26
- Totally Lead-free & Fully RoHS Compliant
- Halogen and Antimony Free. “Green” Device
Typical applications
- Power home Appliances systems / Set-top box & TV power supply
- Switching AC-DC Adaptor & Charger / Open frame switching power supply
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | Packaging | Tol. C | Size | Operating Temperature | Q(%) | DF(%) | Ceramic Type | Fl(mm) | Endurance(h) | IRIPPLE(mA) | ILeak(µA) | Ø D(mm) | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-FTX2 Film Capacitors, Across the mains, 220 nF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Capacitance220 nF | Safety ClassX2 | Rate of Voltage Rise240 V/µs | Dissipation Factor0.1 % | Insulation Resistance30 GΩ | Pitch12.5 mm | PackagingBulk | Capacitance±10% | SizePitch 12.5 mm | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | – | – | – | – | – | Rated Voltage275 V (AC) | – | – | Length15 mm | Width7 mm | Height12.5 mm | MountBoxed THT | ||||
 | WE-CMB Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | – | – | – | – | – | – | – | – | SizeType S | Operating Temperature -40 °C up to +125 °C | – | – | – | – | – | – | – | – | Rated Current1 A | Inductance10 mH | DC Resistance360 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length17.5 mm | Width13 mm | Height22 mm | MountTHT | ||||
 | WCAP-ATG5 Aluminum Electrolytic Capacitors, –, 6.8 µF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATG5 Aluminum Electrolytic Capacitors | Capacitance6.8 µF | – | – | – | – | Pitch2 mm | PackagingAmmopack | Capacitance±20% | – | – | – | Dissipation Factor12 % | – | – | Endurance 2000 | Ripple Current36 mA | Leakage Current3 µA | Diameter5 mm | – | – | – | Rated Voltage35 V (AC) | – | – | Length11 mm | – | – | – | ||||
| WCAP-ATG5 Aluminum Electrolytic Capacitors, –, 120 µF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATG5 Aluminum Electrolytic Capacitors | Capacitance120 µF | – | – | – | – | Pitch7.5 mm | PackagingAmmopack | Capacitance±20% | – | – | – | Dissipation Factor15 % | – | – | Endurance 2000 | Ripple Current550 mA | Leakage Current1440 µA | Diameter18 mm | – | – | – | Rated Voltage400 V (AC) | – | – | Length31.5 mm | – | – | – | ||||
 | WCAP-PTG5 Aluminum Polymer Capacitors, –, 680 µF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-PTG5 Aluminum Polymer Capacitors | Capacitance680 µF | – | – | – | – | Pitch5 mm | PackagingAmmopack | Capacitance±20% | – | – | – | Dissipation Factor10 % | – | – | Endurance 2000 | Ripple Current5500 mA | Leakage Current1000 µA | Diameter10 mm | – | – | – | Rated Voltage16 V (AC) | – | – | Length12.5 mm | – | – | MountRadial THT | ||||
| WCAP-CSGP MLCCs 50 V(DC), –, 100 pF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 pF | – | – | – | Insulation Resistance10 GΩ | – | Packaging7" Tape & Reel | Capacitance±5% | Size0805 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | – | Ceramic TypeNP0 Class I | Pad Dimension0.5 mm | – | – | – | – | – | – | – | Rated Voltage50 V (AC) | – | – | Length2 mm | Width1.25 mm | Height0.6 mm | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, 470 pF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance470 pF | – | – | – | Insulation Resistance10 GΩ | – | Packaging7" Tape & Reel | Capacitance±5% | Size0805 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | – | Ceramic TypeNP0 Class I | Pad Dimension0.5 mm | – | – | – | – | – | – | – | Rated Voltage50 V (AC) | – | – | Length2 mm | Width1.25 mm | Height0.8 mm | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, 1 nF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance1 nF | – | – | – | Insulation Resistance10 GΩ | – | Packaging7" Tape & Reel | Capacitance±5% | Size0805 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | – | Ceramic TypeNP0 Class I | Pad Dimension0.5 mm | – | – | – | – | – | – | – | Rated Voltage50 V (AC) | – | – | Length2 mm | Width1.25 mm | Height0.8 mm | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, 68 nF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance68 nF | – | – | – | Insulation Resistance7.4 GΩ | – | Packaging7" Tape & Reel | Capacitance±10% | Size0805 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor2.5 % | Ceramic TypeX7R Class II | Pad Dimension0.5 mm | – | – | – | – | – | – | – | Rated Voltage50 V (AC) | – | – | Length2 mm | Width1.25 mm | Height0.8 mm | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, 100 nF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 nF | – | – | – | Insulation Resistance5 GΩ | – | Packaging7" Tape & Reel | Capacitance±10% | Size0805 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor2.5 % | Ceramic TypeX7R Class II | Pad Dimension0.5 mm | – | – | – | – | – | – | – | Rated Voltage50 V (AC) | – | – | Length2 mm | Width1.25 mm | Height0.8 mm | – |