IC-Hersteller Onsemi

IC-Hersteller (96)

Onsemi NCP1342

Quasi-Resonant Flyback Controller with Valley Lock-Out Switching

Details

TopologieSperrwandler
Eingangsspannung90-264 V
Schaltfrequenz25 kHz
Ausgang 112 V / 3 A

Beschreibung

This design note describes a 45 W, Type C interface PD3.0, universal AC input, constant voltage power supply intended for smart phone, PAD and NB adaptor supporting PD3.0 or QC3.0 protocol, where isolation from the AC mains is required, and low cost, high efficiency, and low standby power are essential. The featured power supply is a simple QR flyback topology utilizing ON Semiconductor’s NCP1342 HF PWM controller, NCP4306D synchronous rectified controller, NTMFS6B03 synchronous MOSFET and ATP104 Switch MOSFET. This Design Note provides the complete circuit schematic details, PCB and BOM for 45 W Type C Interface PD3.0 Power adapter solution which supports PD output (5 V / 3 A, 9 V / 3 A, 12 V / 3 A, 15 V / 3 A, 20 V / 2.25 A). This design combined with Weltrend WT6632F PD3.0 protocol controller to provide PD3.0 and QC3.0 functions. This design also proposes a dual auxiliary power supply to supply PWM controller, the PWM controller is supplied by high voltage auxiliary voltage at low output voltage and supplied by low voltage auxiliary voltage at high output voltage and also shuts down zener bias of high voltage Vcc while low voltage auxiliary voltage supplies controller. This design also uses NCP4306 synchronous rectified controller to provide high efficiency and also has no external Vcc regulator to supply synchronous controller to ensure controller can works below 3.6 V.

Eigenschaften

  • Integrated High−Voltage Startup Circuit with Brownout Detection
  • Integrated X2 Capacitor Discharge Capability
  • Wide VCC Range from 9 V to 28 V
  • 28 V VCC Overvoltage Protection
  • Abnormal Overcurrent Fault Protection for Winding Short Circuit or Saturation Detection
  • Internal Temperature Shutdown
  • Valley Switching Operation with Valley−Lockout for Noise−Free Operation
  • Frequency Foldback with 25 kHz Minimum Frequency Clamp for Increased Efficiency at Light Loads
  • Rapid Frequency Foldback for Fast Reduction of SwitchingFrequency at Light Loads
  • Skip Mode with Quiet−Skip Technology for Highest Performance During Light Loads
  • Minimized Current Consumption for No Load Power Below 30 mW
  • Frequency Jittering for Reduced EMI Signature
  • Latching or Auto−Recovery Timer−Based Overload Protection
  • Adjustable Overpower Protection (OPP)
  • Adjustable Maximum Frequency Clamp
  • Fault Pin for Severe Fault Conditions, NTC Compatible for OTP
  • 4 ms Soft−Start Timer

Typische Anwendungen

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

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieCSicherheitsklassedV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOBetriebstemperaturRaster
(mm)
VerpackungTol. CBauformBetriebstemperaturQDF
(%)
KeramiktypFl
(mm)
ISAT
(A)
fres
(MHz)
VersionInterface typGenderPinsIR 1
(mA)
Arbeitsspannung
(V (DC))
Z @ 100 MHz
(Ω)
Zmax
(Ω)
Testbedingung ZmaxIR 2
(mA)
RDC max.
(Ω)
TypIR
(mA)
L
(mH)
VR
(V (DC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
MontageartVRMS
(V)
VDC
(V)
VBR
(V)
IPeak
(A)
Wmax
(J)
PDiss
(W)
AnwendungVDE-Zulassung Muster
885012006051SPEC
8 Dateien WCAP-CSGP MLCCs 50 V(DC)10 pF10 GΩ 7" Tape & Reel ±5% 0603 -55 °C up to +125 °C 600 NP0 Klasse I 0.4 50 1.6 0.8 0.8
885012006056SPEC
8 Dateien WCAP-CSGP MLCCs 50 V(DC)68 pF10 GΩ 7" Tape & Reel ±5% 0603 -55 °C up to +125 °C 1000 NP0 Klasse I 0.4 50 1.6 0.8 0.8
885012206083SPEC
8 Dateien WCAP-CSGP MLCCs 50 V(DC)1 nF10 GΩ 7" Tape & Reel ±10% 0603 -55 °C up to +125 °C 2.5 X7R Klasse II 0.4 50 1.6 0.8 0.8
885012207116SPEC
6 Dateien WCAP-CSGP MLCCs 100 V(DC)1 nF10 GΩ -55 °C bis zu +125 °C 7" Tape & Reel ±10% 0805 -55 °C up to +125 °C 2.5 X7R Klasse II 0.5 100 2 1.25 0.8
885012206094SPEC
8 Dateien WCAP-CSGP MLCCs 50 V(DC)68 nF7.4 GΩ 7" Tape & Reel ±10% 0603 -55 °C up to +125 °C 3 X7R Klasse II 0.4 50 1.6 0.8 0.8
890324023028SPEC
8 Dateien WCAP-FTX2 Folienkondensatoren220 nF X2 300 0.130 GΩ -40 °C bis zu +105 °C 10 Lose ±10% Pitch 10 mm -40 °C up to +105 °C 275 13 8 14 Boxed THT Across the mains
885012206076SPEC
8 Dateien WCAP-CSGP MLCCs 25 V(DC)1 µF0.5 GΩ 7" Tape & Reel ±10% 0603 -55 °C up to +125 °C 10 X7R Klasse II 0.4 25 1.6 0.8 0.8
742792040SPEC
9 Dateien WE-CBF SMT-Ferrit -55 °C bis zu +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 0.9 SMT
742792096SPEC
8 Dateien WE-CBF SMT-Ferrit -55 °C bis zu +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 Dateien WE-CMB Stromkompensierte Netzdrossel -40 °C bis zu +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
6 Dateien WE-VD Disk Varistor -40 °C bis zu +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 Ja
7447462470SPEC
8 Dateien WE-TI Tonneninduktivität 5075 -40 °C up to +125 °C 1.2 10.6 Schrumpfschlauch 0.34 1180 0.047 6 6 8.5 THT
632723300011SPEC
6 Dateien 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
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieCSicherheitsklassedV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOBetriebstemperaturRaster
(mm)
VerpackungTol. CBauformBetriebstemperaturQDF
(%)
KeramiktypFl
(mm)
ISAT
(A)
fres
(MHz)
VersionInterface typGenderPinsIR 1
(mA)
Arbeitsspannung
(V (DC))
Z @ 100 MHz
(Ω)
Zmax
(Ω)
Testbedingung ZmaxIR 2
(mA)
RDC max.
(Ω)
TypIR
(mA)
L
(mH)
VR
(V (DC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
MontageartVRMS
(V)
VDC
(V)
VBR
(V)
IPeak
(A)
Wmax
(J)
PDiss
(W)
AnwendungVDE-Zulassung Muster