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IC manufacturers ON Semiconductor

IC manufacturers (84)

ON Semiconductor NCL2801

Power Factor Controller, High-Efficiency, Enhanced for Lighting

Overview

TopologyPower Factor Correction
Switching frequency27.4 kHz
IC revision04

Description

The 8−pin PFC controller NCL2801 is designed to drive PFC boost stages. It is based on an innovative Valley Count Frequency Fold−back (VCFF) method. The circuit classically operates in Critical conduction Mode (CrM) for high load values. When the load decreases a Discontinuous Conduction Mode DCM is forced by forcing a dead time which, by construction corresponds to a fixed number of valleys. The lower the output power, the higher the number of valleys corresponding to the dead time. After DCM works down to 6th valley switching and if the load continues to decrease, a dead time is continuously added to the 6th valley. The end of additional dead time is synchronized with the drain voltage valley. The maximum switching period is limited to 36.5 s. VCFF maximizes the efficiency during DCM and light load. In particular, the stand−by losses are reduced to a minimum. Like in FCCrM controllers, internal circuitry allows near−unity power factor even when the switching frequency is reduced. Housed in a SO−8 package, the circuit also incorporates the features necessary for robust and compact PFC stages, with few external components.

Features

  • Near−Unity Power Factor
  • Critical Conduction Mode (CrM)
  • Valley Count Frequency Fold−Back (VCFF)
  • Peak Current Control Mode to Maintain a Proper Current Shaping in VCFF Mode
  • Fast Line / Load Transient Compensation (Dynamic Response Enhancer) Option
  • Brown−out Detection
  • Two−level Line Feed−Forward (HL&LL)
  • Valley Turn−on (No Valley Hoping by Construction)
  • High Drive Capability: −500 mA / +800 mA
  • VCC Range: from 10.5 V to 27 V
  • Low Start−up Consumption for :
  • [C]& [D] Option: Low VCC Start−up Level (12.5 V)[A]& [B] Option: High VCC Start−up Level (17.0 V)[E]& [F] Option: High VCC Start−up Level (10.5 V)
  • This is a Pb−Free Device

Typical applications

  • Lighting Ballasts (LED, Fluorescent), • Flat TV
  • PC Power Supplies, All Off Line Appliances Requiring Power Factor Correction

More information

Products

Order Code Data­sheet Simu­lation Downloads Product seriesPinsApplicationPCB/Cable/PanelModularityTypeWire SectionEndurance
(h)
IRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Ø D
(mm)
VR 2
(V (DC))
Tol. CSizeOperating TemperatureCeramic TypeFl
(mm)
LR
(µH)
RDC max.
(mΩ)
IR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
L
(mm)
W
(mm)
H
(mm)
MountCdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
Technical ReferenceVINL1
(mH)
nIR
(A)
ISAT
(A)
RDC1 max
(mΩ)
RDC2 max
(mΩ)
Samples
691131710002SPEC
6 files WR-TBL Series 1317 - 5.00 mm Horizontal Entry with Pressure Clamp Divisible 2 Pressure Clamp Divisible PCB No Horizontal 30 to 12 (AWG) 0.05 to 3.31 (mm²) -30 up to +120 °C 22 10 -30 °C up to +120 °C 5
691131710003SPEC
6 files WR-TBL Series 1317 - 5.00 mm Horizontal Entry with Pressure Clamp Divisible 3 Pressure Clamp Divisible PCB No Horizontal 30 to 12 (AWG) 0.05 to 3.31 (mm²) -30 up to +120 °C 22 15 -30 °C up to +120 °C 5
744824433SPEC
9 files WE-CMB Common Mode Power Line Choke 4 L -40 up to +125 °C 35 4 3.3 35 250 1500 27.5 18.5 33 THT -40 °C up to +125 °C 3.3 4
760806400SPEC
8 files WE-PFC PFC Chokes 4 RM14 1500 48 43 32 THT -40 °C up to +125 °C 85 - 265 V (AC) 0.18 9:1 3 13.2 78 200
890334024003CSSPEC
8 files WCAP-FTXX Film Capacitors 630 ±10% Pitch 12.5 mm 310 15 8.5 14330 nF 260 0.130000 MΩ -40 °C up to +105 °C 12.5 MXXP125334K310ACPP45004
890334024002SPEC
8 files WCAP-FTXX Film Capacitors ±10% Pitch 12.5 mm 310 15 7 12.5220 nF 240 0.130000 MΩ -40 °C up to +105 °C 12.5 MX2P125224K275ASPB15000
744117SPEC
9 files WE-SI Leaded Toroidal Storage Choke 23 -40 up to +105 °C 365 2 0.39 250 23 12.5 12 THT 0.5
860080672001SPEC
7 files WCAP-ATLI Aluminum Electrolytic Capacitors 2000 220 11 8 5 ±20% 50 1122 µF -55 °C up to +105 °C 2 ATEC110220M050DSPA3B000
885012206083SPEC
7 files WCAP-CSGP MLCCs 50 V(DC) 2.5 ±10% 0603 -55 up to +125 °C X7R Class II 0.4 50 1.6 0.8 0.81 nF10 GΩ X7R0603102K050DFCT10000
885012208061SPEC
7 files WCAP-CSGP MLCCs 25 V(DC) 3.5 ±10% 1206 -55 up to +125 °C X7R Class II 0.6 25 3.2 1.6 0.95330 nF1.5 GΩ X7R1206334K025DFCT10000
885012208066SPEC
7 files WCAP-CSGP MLCCs 25 V(DC) 3.5 ±10% 1206 -55 up to +125 °C X7R Class II 0.6 25 3.2 1.6 1.62.2 µF0.2 GΩ X7R1206225K025DFCT10000
885012208087SPEC
7 files WCAP-CSGP MLCCs 50 V(DC) 2.5 ±10% 1206 -55 up to +125 °C X7R Class II 0.6 50 3.2 1.6 0.8100 nF5 GΩ X7R1206104K050DFCT10000
890303325008CSSPEC
7 files WCAP-FTBP Film Capacitors ±5% Pitch 15 mm 630 18 7 13150 nF 200 0.130000 MΩ -40 °C up to +105 °C 15 MPPP015154J630DCPP45004
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesPinsApplicationPCB/Cable/PanelModularityTypeWire SectionEndurance
(h)
IRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Ø D
(mm)
VR 2
(V (DC))
Tol. CSizeOperating TemperatureCeramic TypeFl
(mm)
LR
(µH)
RDC max.
(mΩ)
IR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
L
(mm)
W
(mm)
H
(mm)
MountCdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
Technical ReferenceVINL1
(mH)
nIR
(A)
ISAT
(A)
RDC1 max
(mΩ)
RDC2 max
(mΩ)
Samples