IC manufacturers Onsemi

IC manufacturers (99)

Onsemi NCP1340

Quasi-Resonant Controller, High-Voltage, Featuring Valley Lock-Out Switching

Overview

TopologyBuck Converter
Input voltage5 V
Output 18 V / 3 A
IC revision1

Description

The NCP1340 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 NCP1340 can enable no−load power consumption below 30 mW. The quasi−resonant current−mode flyback stage features a proprietary valley−lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and transitions to a frequency foldback mode to reduce switching losses. As the load decreases further, the NCP1340 enters quiet−skip mode to manage the power delivery. To help ensure converter ruggedness, the NCP1340 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 over voltage and NTC−ready over temperature protection through a dedicated pin, and line removal detection to safely discharge the X2 capacitors when the line is removed.

Features

  • QR Frequency Jittering
  • New Quiet-Skip Technology
  • Integrated HV Startup with Brownout Protection
  • Valley Switching Operation 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 implementations

Typical applications

  • Medium or High Power AC-DC Adapters / Ultra High Density AC-DC Adapters

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesCVR
(V (AC))
Safety ClassdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
L
(mm)
W
(mm)
H
(mm)
PackagingL
(µH)
IR
(mA)
ISAT
(A)
fres
(MHz)
VersionInterface TypeGenderPins (Value)
(pcs)
MountIR
(mA)
Working Voltage
(V (DC))
Z @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
TypeVRMS
(V)
VDC
(V)
VBR
(V)
IPeak
(A)
Wmax
(J)
PDiss
(W)
ApplicationVDE Approval Samples
890334022017SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-FTXX Film Capacitors68 nF 310 X2 400 0.130 GΩ -40 °C up to +105 °C 7.5 10 6 12 Bulk Boxed THT Across the mains
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 2 1.2 0.0009 1500 SMT SMT 2000 600 700 150 MHz 2000 0.15 High Current
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 2 1.2 0.9 800 SMT SMT 1000 1000 1000 100 MHz 1000 0.3 High Current
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 9 4.1 12.5 THT THT 300 385 470 1200 35 0.25 230 VAC Yes
7447462101SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-TI Radial Leaded Wire Wound Inductor 6 6 8.5 100 800 0.8 7.1 Heat Shrinking Tube THT 0.65
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 5000 Type C Receptacle 24 THR 20 Horizontal USB 3.1
Order Code Data­sheet Simu­lation
890334022017SPEC
742792040SPEC
742792096SPEC
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.

7447462101SPEC
632723300011SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesCVR
(V (AC))
Safety ClassdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
L
(mm)
W
(mm)
H
(mm)
PackagingL
(µH)
IR
(mA)
ISAT
(A)
fres
(MHz)
VersionInterface TypeGenderPins (Value)
(pcs)
MountIR
(mA)
Working Voltage
(V (DC))
Z @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
TypeVRMS
(V)
VDC
(V)
VBR
(V)
IPeak
(A)
Wmax
(J)
PDiss
(W)
ApplicationVDE Approval Samples