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Onsemi NCP1342 | Demoboard NCP1342PD65WGEVB
Quasi-Resonant Flyback Controller with Valley Lock-Out Switching
Overview
| Topology | Flyback Converter |
| Input voltage | 90 V |
| Output 1 | 20 V / 3 A |
| IC revision | 4 |
Description
The NCP1342PD65WGEVB showcases the NCP1342 Quasi-Resonant Flyback Controller in a USB Power Delivery (PD) application. The evaluation board delivers 60 W of power using a compact RM8 transformer. The NCP1342 is suitable for designing high-performance off-line power converters and USB PD adapters, and features Rapid Frequency Foldback (RFF) for improved efficiency over the load range. An integrated active X2 capacitor discharge feature eliminates discharge resistors which enables no-load power consumption below 40 mW.
Features
- Minimum Peak Current Modulation for Rapid Frequency Foldback (RFF)
- QR Frequency Jittering
- Quiet-Skip Technology
- Integrated HV Startup with Brownout Protection
- Valley Switching Operaton with Valley Lockout
- Integrated X2 Capacitor Discharge Capability
- NTC Compatible Fault Pin
- High Drive Capability: -500 mA / +800 mA
- Latch input for OVP and OTP implementation
Typical applications
- Medium or High Power AC-DC Adapters, Ultra High Density AC-DC Adapters, USB PD Compliant, Notebook Adapters, Flat TV SMPS, Phone and Tablet Adapters
- Computer Power Supplies
More information
All technical functions in detail
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | ISAT,10%(A) | fres(MHz) | Version | Interface Type | Gender | Pins | PCB Thickness(mm) | Working Voltage(V (DC)) | Packaging | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | IR(A) | L(µH) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | VRMS(V) | VDC(V) | VBR(V) | IPeak(A) | Wmax(J) | PDiss(W) | VDE Approval | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-TI Radial Leaded Wire Wound Inductor, 4.7 A, 27 MHz | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | Saturation Current @ 10%4.7 A | Self Resonant Frequency27 MHz | VersionHeat Shrinking Tube | – | – | – | – | – | – | – | – | – | – | DC Resistance0.033 Ω | – | Rated Current4 A | Inductance10 µH | – | – | – | Length9.5 mm | Width9.5 mm | Height8 mm | MountTHT | – | – | – | – | – | – | – | ||||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | – | VersionSMT | – | – | – | – | – | – | Impedance @ 100 MHz600 Ω | Maximum Impedance700 Ω | Maximum Impedance150 MHz | Rated Current 22000 mA | DC Resistance0.15 Ω | TypeHigh Current | Rated Current1.5 A | – | – | – | – | Length2 mm | Width1.2 mm | Height0.0009 mm | MountSMT | – | – | – | – | – | – | – | ||||
| WE-CBF SMT EMI Suppression Ferrite Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | – | VersionSMT | – | – | – | – | – | – | Impedance @ 100 MHz1000 Ω | Maximum Impedance1000 Ω | Maximum Impedance100 MHz | Rated Current 21000 mA | DC Resistance0.3 Ω | TypeHigh Current | Rated Current0.8 A | – | – | – | – | Length2 mm | Width1.2 mm | Height0.9 mm | MountSMT | – | – | – | – | – | – | – | ||||
 | WE-CMB Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | – | – | VersionTHT | – | – | Pins4 | – | – | – | – | – | – | – | DC Resistance0.125 Ω | – | Rated Current2 A | Inductance10000 µH | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length23 mm | Width13.8 mm | Height26.5 mm | MountTHT | – | – | – | – | – | – | VDE Approval40042670 | ||||
 | WE-VD Disk Varistor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-VD Disk Varistor | – | – | VersionTHT | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Length9 mm | Width4.1 mm | Height12.5 mm | MountTHT | AC Operating Voltage300 V | DC Operating Voltage385 V | (Reverse) Breakdown Voltage470 V | (Reverse) Peak Pulse Current1200 A | Energy Absorption35 J | Power Dissipation0.25 W | VDE ApprovalYes | ||||
 | WR-USB Type C Connectors, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Type C Connectors | – | – | – | Interface TypeType C | GenderReceptacle | Pins24 | PCB Thickness1.6 mm | Working Voltage48 V (DC) | PackagingTape and Reel | – | – | – | – | – | TypeHorizontal | Rated Current5 A | – | – | – | – | – | – | – | MountTHR | – | – | – | – | – | – | – | |||
750343808 | Flyback Transformer, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |