IC manufacturers Onsemi

IC manufacturers (99)

Onsemi NCP1342 | Demoboard NCP1342PD45WGEVB

NCP1342: Quasi-Resonant Flyback Controller with Valley Lock-Out Switching

Overview

TopologyFlyback Converter
Input voltage90-264 V
IC revisionA

Description

The NCP1342 is a highly integrated quasi-resonant flyback controller suitable for designing high-performance off-line power converters. With an integrated active X2 capacitor discharge feature, the NCP1342 can enable no-load power consumption below 30 mW.The NCP1342 features proprietary valley-lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and transitions to frequency foldback mode to reduce switching losses. As the load decreases further, the NCP1342 enters quiet-skip mode to manage the power delivery while minimizing acoustic noise.To ensure light load performance with high frequency designs, the NCP1342 incorporates Minimum Peak Current Modulation (MPCM) to reduce the switching frequency quickly. To help ensure converter ruggedness, the NCP1342 implements several key protective features such as internal brownout detection, a non-dissipative Over Power Protection (OPP) for constant maximum output power regardless of input voltage, a latched overvoltage and NTC-ready overtemperature protection through a dedicated pin, and line removal detection to safely discharge the X2 capacitors when the ac line is removed.

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

More information

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesCSafety ClassdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
PackagingTol. CSizeOperating TemperatureQDF
(%)
Ceramic TypeFl
(mm)
ISAT
(A)
fres
(MHz)
VersionInterface TypeGenderPins (Value)
(pcs)
IR
(mA)
Working Voltage
(V (DC))
Z @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
TypeIR
(mA)
L
(mH)
VR
(V (DC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
MountVRMS
(V)
VDC
(V)
VBR
(V)
IPeak
(A)
Wmax
(J)
PDiss
(W)
ApplicationVDE Approval Samples
885012006051SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)10 pF10 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
885012006056SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)68 pF10 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
885012206083SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)1 nF10 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
885012207116SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 100 V(DC)1 nF10 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
885012206094SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)68 nF7.4 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
890324023028SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-FTX2 Film Capacitors220 nF X2 300 0.130 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
885012206076SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC)1 µF0.5 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
742792040SPEC
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
742792096SPEC
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
744821110SPEC
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
820573011SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

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
7447462470SPEC
8 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
632723300011SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-COM USB 3.1 Type C Receptacle Horizontal THR / SMT1000 MΩ Tape and Reel -40 °C up to +105 °C Type C Receptacle 24 20 Horizontal 5000 THR USB 3.1
750343635SPEC
5 files Active i| Production is active. Expected lifetime: >10 years. Transformer Tray RM8 -40 °C up to +125 °C 2.5 0.36 3000 21.59 21.59 17.27 THT
Order Code Data­sheet Simu­lation
885012006051SPEC
885012006056SPEC
885012206083SPEC
885012207116SPEC
885012206094SPEC
890324023028SPEC
885012206076SPEC
742792040SPEC
742792096SPEC
744821110SPEC
820573011SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

7447462470SPEC
632723300011SPEC
750343635SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesCSafety ClassdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
PackagingTol. CSizeOperating TemperatureQDF
(%)
Ceramic TypeFl
(mm)
ISAT
(A)
fres
(MHz)
VersionInterface TypeGenderPins (Value)
(pcs)
IR
(mA)
Working Voltage
(V (DC))
Z @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
TypeIR
(mA)
L
(mH)
VR
(V (DC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
MountVRMS
(V)
VDC
(V)
VBR
(V)
IPeak
(A)
Wmax
(J)
PDiss
(W)
ApplicationVDE Approval Samples