IC-Hersteller Onsemi

IC-Hersteller (97)

Onsemi NCP4305 | Demoboard ONSEC-17-038

Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies

Details

TopologieAbwärtswandler
IC-Revision1.0

Beschreibung

The NCP4305 is high performance driver tailored to control a synchronous rectification MOSFET in switch mode power supplies.Thanks to its high performance drivers and versatility, it can be used in various topologies such as DCM or CCM flyback, quasi resonant flyback, forward and half bridge resonant LLC.The combination of externally adjustable minimum off - time and on - time blanking periods helps to fight the ringing induced by the PCB layout and other parasitic elements. A reliable and noise less operationof the SR system is insured due to the Self Synchronization feature. The NCP4305 also utilizes Kelvin connection of the driver to the MOSFET to achieve high efficiency operation at full load and utilizes a light load detection architecture to achieve high efficiency at light load.The precise turn−off threshold, extremely low turn−off delay time and high sink current capability of the driver allow the maximum synchronous rectification MOSFET conduction time and enables maximum SMPS efficiency. The high accuracy driver and 5 V gate clamp enables the use of GaN FETs.

Eigenschaften

  • Precise True Secondary Zero Current Detection with Adjustable Threshold
  • Typically 20 ns Turn off Delay from Current Sense Input to Driver
  • Zero Current Detection Pin Capability up to 200 V
  • Optional Ultrafast (7ns) Trigger Input
  • Disable Input
  • Adjustable Minimum ON Time and Minimum OFF Time
  • Self Synchronization
  • 8 A Sink, 4 A Source Drive capability
  • Light Load Detection with Modulated Gate Drive
  • 4.5 V & 9 V UVLO Options and 36 V(Max)

Typische Anwendungen

  • High Power Density AC/DC Power Supplies

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieλDom typ.
(nm)
FarbeλPeak typ.
(nm)
λPeak B typ.
(nm)
λPeak G typ.
(nm)
λPeak R typ.
(nm)
λDom B typ.
(nm)
λDom G typ.
(nm)
λDom R typ.
(nm)
IV typ.
(mcd)
IV B typ.
(mcd)
IV G typ.
(mcd)
IV R typ.
(mcd)
VF typ.
(V)
VF B typ.
(V)
VF G typ.
(V)
VF R typ.
(V)
Chiptechnologie50% typ.
(°)
AnwendungCVR
(V (AC))
SicherheitsklassedV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOBetriebstemperaturRaster
(mm)
L
(mm)
W
(mm)
L
(µH)
ISAT
(A)
RDC max.
(mΩ)
fres
(MHz)
VersionInterface typLeiterplattendicke
(mm)
MontageartIR 1
(A)
Arbeitsspannung
(V (DC))
Endurance
(h)
IRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Ø D
(mm)
Pins
(pcs)
ReihenH
(mm)
G
(mm)
GenderTypIR
(A)
Verpackung Muster
150060BS75000SPEC
25 Dateien WL-SMCW SMT Mono-color Chip LED Waterclear 470 Blau 465 145 3.2 InGaN 140 -40 °C up to +85 °C 1.6 0.8 SMT 0.7 Tape and Reel
890324023023SPEC
8 Dateien WCAP-FTX2 Folienkondensatoren Across the mains100 nF 275 X2 300 0.130 GΩ -40 °C bis zu +105 °C 10 13 7 Boxed THT 13 18 Lose
890324024003SPEC
8 Dateien WCAP-FTX2 Folienkondensatoren Across the mains330 nF 275 X2 260 0.130 GΩ -40 °C bis zu +105 °C 12.5 15 8.5 Boxed THT 14 18 Lose
7447231101SPEC
12 Dateien WE-TI Tonneninduktivität 11 11 100 3.1 90 3.6 Schrumpfschlauch THT 19 2.6
150141M173100SPEC
25 Dateien WL-SFTW SMT Full-color TOP LED Waterclear Rot & Grün & Blau 465 515 635 470 520 625 230 950 270 3.2 3.2 2 AlInGaP + InGaN 120 3.5 2.8 SMT 1.9 Tape and Reel
860240473003SPEC
6 Dateien WCAP-AT1H Aluminium-Elektrolytkondensatoren47 µF 25 -40 °C bis zu +105 °C 2.5 11 5000 160 11.75 14 6.3 Ammopack
860240574004SPEC
6 Dateien WCAP-AT1H Aluminium-Elektrolytkondensatoren47 µF 35 -40 °C bis zu +105 °C 3.5 11.5 8000 240 16.45 12 8 Ammopack
860240475007SPEC
6 Dateien WCAP-AT1H Aluminium-Elektrolytkondensatoren220 µF 25 -40 °C bis zu +105 °C 5 16 10000 580 55 14 10 Ammopack
860080578019SPEC
7 Dateien WCAP-ATLI Aluminium-Elektrolytkondensatoren680 µF 35 -55 °C bis zu +105 °C 5 20 5000 2260 238 9 13 Ammopack
632121300001SPEC
6 Dateien WR-COM USB 3.1 Type A Receptacle Horizontal THT Power Delivery USB 3.1100 MΩ -20 °C bis zu +85 °C Type A THR 5 20 9 Receptacle Horizontal 5 Tray
632723300011SPEC
6 Dateien WR-COM USB 3.1 Type C Receptacle Horizontal THR / SMT USB 3.11000 MΩ Type C 1.6 THR 20 24 1.9 Receptacle Horizontal 5 Tape and Reel
61300211121SPEC
6 Dateien WR-PHD 2.54 mm THT Pin Header1000 MΩ 2.54 5.08 THT 250 2 Single Pin Header Gerade 3 Beutel
61300311121SPEC
6 Dateien WR-PHD 2.54 mm THT Pin Header1000 MΩ 2.54 7.62 THT 250 3 Single Pin Header Gerade 3 Beutel
61300411121SPEC
6 Dateien WR-PHD 2.54 mm THT Pin Header1000 MΩ 2.54 10.16 THT 250 4 Single Pin Header Gerade 3 Beutel
750317576SPEC
Inductor
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieλDom typ.
(nm)
FarbeλPeak typ.
(nm)
λPeak B typ.
(nm)
λPeak G typ.
(nm)
λPeak R typ.
(nm)
λDom B typ.
(nm)
λDom G typ.
(nm)
λDom R typ.
(nm)
IV typ.
(mcd)
IV B typ.
(mcd)
IV G typ.
(mcd)
IV R typ.
(mcd)
VF typ.
(V)
VF B typ.
(V)
VF G typ.
(V)
VF R typ.
(V)
Chiptechnologie50% typ.
(°)
AnwendungCVR
(V (AC))
SicherheitsklassedV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOBetriebstemperaturRaster
(mm)
L
(mm)
W
(mm)
L
(µH)
ISAT
(A)
RDC max.
(mΩ)
fres
(MHz)
VersionInterface typLeiterplattendicke
(mm)
MontageartIR 1
(A)
Arbeitsspannung
(V (DC))
Endurance
(h)
IRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Ø D
(mm)
Pins
(pcs)
ReihenH
(mm)
G
(mm)
GenderTypIR
(A)
Verpackung Muster