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reference designNCP1342 | Demoboard NCP1342PD65WGEVB

Onsemi NCP1342 | Demoboard NCP1342PD65WGEVB

Quasi-Resonant Flyback Controller with Valley Lock-Out Switching

Overview

TopologyFlyback Converter
Input voltage90 V
Output 120 V / 3 A
IC revision4

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

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Order Code
Data­sheet
Simu­lation
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Status
Product series
ISAT,10%(A)
fres(MHz)
Version
Application
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
SamplesAvailability & Sample
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744732100
SPECWE-TI Radial Leaded Wire Wound Inductor, 4.7 A, 27 MHz
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction 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 
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DC Resistance0.033 Ω
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Rated Current4 A
Inductance10 µH
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Length9.5 mm
Width9.5 mm
Height8 mm
MountTHT 
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742792040
SPECWE-CBF SMT EMI Suppression Ferrite Bead, –, –
Simu­lation
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-CBF SMT EMI Suppression Ferrite Bead
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VersionSMT 
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Impedance @ 100 MHz600 Ω
Maximum Impedance700 Ω
Maximum Impedance150 MHz 
Rated Current 22000 mA
DC Resistance0.15 Ω
TypeHigh Current 
Rated Current1.5 A
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Length2 mm
Width1.2 mm
Height0.0009 mm
MountSMT 
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742792096
SPECWE-CBF SMT EMI Suppression Ferrite Bead, –, –
Simu­lation
Availability
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-CBF SMT EMI Suppression Ferrite Bead
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VersionSMT 
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Impedance @ 100 MHz1000 Ω
Maximum Impedance1000 Ω
Maximum Impedance100 MHz 
Rated Current 21000 mA
DC Resistance0.3 Ω
TypeHigh Current 
Rated Current0.8 A
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Length2 mm
Width1.2 mm
Height0.9 mm
MountSMT 
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744823210
SPECWE-CMB Common Mode Power Line Choke, –, –
Simu­lation
Availability
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Downloads11 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-CMB Common Mode Power Line Choke
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VersionTHT 
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Pins4 
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DC Resistance0.125 Ω
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Rated Current2 A
Inductance10000 µH
Rated Voltage250 V (AC)
Insulation Test Voltage1500 V (AC)
MaterialMnZn 
Length23 mm
Width13.8 mm
Height26.5 mm
MountTHT 
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VDE Approval40042670 
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820573011
SPECWE-VD Disk Varistor, –, –
Simu­lation
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-VD Disk Varistor
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VersionTHT 
Application230 VAC 
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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 
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632723300011
SPECWR-USB Type C Connectors, –, –
Simu­lation–
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-USB Type C Connectors
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ApplicationUSB 3.1 
Interface TypeType C 
GenderReceptacle 
Pins24 
PCB Thickness1.6 mm
Working Voltage48 V (DC)
PackagingTape and Reel 
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TypeHorizontal 
Rated Current5 A
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MountTHR 
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750343808
SPECFlyback Transformer, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product series Flyback Transformer
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