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Overview
| Topology | Flyback Converter |
| Input voltage | 90-264 V |
| Switching frequency | 25 kHz |
| Output 1 | 12 V / 3 A |
Description
This design note describes a 45 W, Type C interface PD3.0, universal AC input, constant voltage power supply intended for smart phone, PAD and NB adaptor supporting PD3.0 or QC3.0 protocol, where isolation from the AC mains is required, and low cost, high efficiency, and low standby power are essential. The featured power supply is a simple QR flyback topology utilizing ON Semiconductor’s NCP1342 HF PWM controller, NCP4306D synchronous rectified controller, NTMFS6B03 synchronous MOSFET and ATP104 Switch MOSFET. This Design Note provides the complete circuit schematic details, PCB and BOM for 45 W Type C Interface PD3.0 Power adapter solution which supports PD output (5 V / 3 A, 9 V / 3 A, 12 V / 3 A, 15 V / 3 A, 20 V / 2.25 A). This design combined with Weltrend WT6632F PD3.0 protocol controller to provide PD3.0 and QC3.0 functions. This design also proposes a dual auxiliary power supply to supply PWM controller, the PWM controller is supplied by high voltage auxiliary voltage at low output voltage and supplied by low voltage auxiliary voltage at high output voltage and also shuts down zener bias of high voltage Vcc while low voltage auxiliary voltage supplies controller. This design also uses NCP4306 synchronous rectified controller to provide high efficiency and also has no external Vcc regulator to supply synchronous controller to ensure controller can works below 3.6 V.
Features
- Integrated High−Voltage Startup Circuit with Brownout Detection
- Integrated X2 Capacitor Discharge Capability
- Wide VCC Range from 9 V to 28 V
- 28 V VCC Overvoltage Protection
- Abnormal Overcurrent Fault Protection for Winding Short Circuit or Saturation Detection
- Internal Temperature Shutdown
- Valley Switching Operation with Valley−Lockout for Noise−Free Operation
- Frequency Foldback with 25 kHz Minimum Frequency Clamp for Increased Efficiency at Light Loads
- Rapid Frequency Foldback for Fast Reduction of SwitchingFrequency at Light Loads
- Skip Mode with Quiet−Skip Technology for Highest Performance During Light Loads
- Minimized Current Consumption for No Load Power Below 30 mW
- Frequency Jittering for Reduced EMI Signature
- Latching or Auto−Recovery Timer−Based Overload Protection
- Adjustable Overpower Protection (OPP)
- Adjustable Maximum Frequency Clamp
- Fault Pin for Severe Fault Conditions, NTC Compatible for OTP
- 4 ms Soft−Start Timer
Typical applications
- Medium or High Power AC-DC Adapters / Ultra High Density AC-DC Adapters / USB PD Compliant
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | Packaging | Tol. C | Size | Operating Temperature | Q | DF (%) | Ceramic Type | Fl (mm) | ISAT (A) | fres (MHz) | Version | Interface Type | Gender | Pins (Value) (pcs) | IR (mA) | Working Voltage (V (DC)) | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | IR (mA) | L (mH) | VR (V (DC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | VRMS (V) | VDC (V) | VBR (V) | IPeak (A) | Wmax (J) | PDiss (W) | Application | VDE Approval | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012006051 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | 10 pF | – | – | – | 10 GΩ | – | – | 7" Tape & Reel | ±5% | 0603 | -55 °C up to +125 °C | 600 | – | NP0 Class I | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 50 | – | – | 1.6 | 0.8 | 0.8 | – | – | – | – | – | – | – | – | – | ||
| 885012006056 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | 68 pF | – | – | – | 10 GΩ | – | – | 7" Tape & Reel | ±5% | 0603 | -55 °C up to +125 °C | 1000 | – | NP0 Class I | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 50 | – | – | 1.6 | 0.8 | 0.8 | – | – | – | – | – | – | – | – | – | ||
| 885012206083 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | 1 nF | – | – | – | 10 GΩ | – | – | 7" Tape & Reel | ±10% | 0603 | -55 °C up to +125 °C | – | 2.5 | X7R Class II | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 50 | – | – | 1.6 | 0.8 | 0.8 | – | – | – | – | – | – | – | – | – | ||
| 885012207116 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 100 V(DC) | 1 nF | – | – | – | 10 GΩ | -55 °C up to +125 °C | – | 7" Tape & Reel | ±10% | 0805 | -55 °C up to +125 °C | – | 2.5 | X7R Class II | 0.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 100 | – | – | 2 | 1.25 | 0.8 | – | – | – | – | – | – | – | – | – | ||
| 885012206094 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | 68 nF | – | – | – | 7.4 GΩ | – | – | 7" Tape & Reel | ±10% | 0603 | -55 °C up to +125 °C | – | 3 | X7R Class II | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 50 | – | – | 1.6 | 0.8 | 0.8 | – | – | – | – | – | – | – | – | – | ||
 | 890324023028 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | 220 nF | X2 | 300 | 0.1 | 30 GΩ | -40 °C up to +105 °C | 10 | Bulk | ±10% | Pitch 10 mm | -40 °C up to +105 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 275 | – | – | 13 | 8 | 14 | Boxed THT | – | – | – | – | – | – | Across the mains | – | ||
| 885012206076 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | 1 µF | – | – | – | 0.5 GΩ | – | – | 7" Tape & Reel | ±10% | 0603 | -55 °C up to +125 °C | – | 10 | X7R Class II | 0.4 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 25 | – | – | 1.6 | 0.8 | 0.8 | – | – | – | – | – | – | – | – | – | ||
 | 742792040 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | -55 °C up to +125 °C | – | – | – | 0805 | -55 °C up to +125 °C | – | – | – | 0.5 | – | – | SMT | – | – | – | 2000 | – | 600 | 700 | 150 MHz | 2000 | 0.15 | High Current | 1500 | – | – | – | – | 2 | 1.2 | 0.0009 | SMT | – | – | – | – | – | – | – | – | ||
| 742792096 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | -55 °C up to +125 °C | – | – | – | 0805 | -55 °C up to +125 °C | – | – | – | 0.5 | – | – | SMT | – | – | – | 1000 | – | 1000 | 1000 | 100 MHz | 1000 | 0.3 | High Current | 800 | – | – | – | – | 2 | 1.2 | 0.9 | SMT | – | – | – | – | – | – | – | – | ||
 | 744821110 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | – | – | – | – | – | -40 °C up to +125 °C | – | – | – | XS | -40 °C up to +125 °C | – | – | – | – | – | – | THT | – | – | 4 | 700 | – | – | – | – | – | 0.35 | – | 700 | 10 | 250 | 1500 | MnZn | 15 | 7.5 | 18 | THT | – | – | – | – | – | – | – | 40042670 | ||
 | 820573011 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WE-VD Disk Varistor | – | – | – | – | – | -40 °C up to +85 °C | – | – | – | 7 mm | -40 °C up to +85 °C | – | – | – | – | – | – | THT | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 9 | 4.1 | 12.5 | THT | 300 | 385 | 470 | 1200 | 35 | 0.25 | 230 VAC | Yes | ||
 | 7447462470 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | – | – | – | 5075 | -40 °C up to +125 °C | – | – | – | – | 1.2 | 10.6 | Heat Shrinking Tube | – | – | – | – | – | – | – | – | – | 0.34 | – | 1180 | 0.047 | – | – | – | 6 | 6 | 8.5 | THT | – | – | – | – | – | – | – | – | ||
 | 632723300011 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-COM USB 3.1 Type C Receptacle Horizontal THR / SMT | – | – | – | – | 1000 MΩ | – | – | Tape and Reel | – | – | -40 °C up to +105 °C | – | – | – | – | – | – | – | Type C | Receptacle | 24 | – | 20 | – | – | – | – | – | Horizontal | 5000 | – | – | – | – | – | – | – | THR | – | – | – | – | – | – | USB 3.1 | – |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | Packaging | Tol. C | Size | Operating Temperature | Q | DF (%) | Ceramic Type | Fl (mm) | ISAT (A) | fres (MHz) | Version | Interface Type | Gender | Pins (Value) (pcs) | IR (mA) | Working Voltage (V (DC)) | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | IR (mA) | L (mH) | VR (V (DC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | VRMS (V) | VDC (V) | VBR (V) | IPeak (A) | Wmax (J) | PDiss (W) | Application | VDE Approval | Samples |
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