IC manufacturers Onsemi

IC manufacturers (99)

Onsemi NCP4305D | Demoboard ONSEC-18-022

Secondary Side Synchronous Rectification Driver for High Efficiency SMPS Topologies

Overview

TopologyFlyback Converter

Description

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 operation of 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 MOSFETs.

Features

  • 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)

Typical applications

  • High Power Density AC/DC Power Supplies

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CSafety ClassdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
ISAT
(A)
fres
(MHz)
VersionTiEndurance
(h)
IRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Ø D
(mm)
Operation Force (Value)
(g)
SchematicPackagingIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
MountVRMS
(V)
VDC
(V)
VBR
(V)
IPeak
(A)
Wmax
(J)
PDiss
(mW)
ApplicationVDE ApprovalPins (Value)
(pcs)
RowsG
(mm)
GenderType Samples
155124BS73200SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WL-SMSW SMT Mono-color Side View Waterclear 470 Blue 468 150 3.4 InGaN 120 -40 °C up to +85 °C Tape and Reel 3.2 1.5 1 SMT 95
7448030509SPEC
10 files Active i| Production is active. Expected lifetime: >10 years.WE-CMBNC Common Mode Power Line Choke Nanocrystalline THT 5 9 32 300 2100 Nanocrystalline 23 13.5 26 THT 40048238 4 5
744823422SPEC
10 files Active i| Production is active. Expected lifetime: >10 years.WE-CMB Common Mode Power Line Choke -40 °C up to +125 °C THT 4 2.2 30 250 1500 MnZn 23.5 13.8 25.5 THT 40042670 4 3
820412711SPEC

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 THT 12.5 12.5 4.4 16 THT 275 350 430 3500 80 400 230 VAC Yes
890324023023SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-FTX2 Film Capacitors100 nF X2 300 0.130 GΩ -40 °C up to +105 °C 10 Bulk 275 13 7 13 Boxed THT Across the mains 18
890324024003SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-FTX2 Film Capacitors330 nF X2 260 0.130 GΩ -40 °C up to +105 °C 12.5 Bulk 275 15 8.5 14 Boxed THT Across the mains 18
7447055SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WE-FI Leaded Toroidal Line Choke -40 °C up to +105 °C 5.4 0.15 42 26 13 THT 15
7447231101SPEC
14 files Active i| Production is active. Expected lifetime: >10 years.WE-TI Radial Leaded Wire Wound Inductor 3.1 3.6 Heat Shrinking Tube 2.6 0.1 90 11 11 19 THT
860240473003SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WCAP-AT1H Aluminum Electrolytic Capacitors47 µF -40 °C up to +105 °C 2.5 5000 160 11.75 14 6.3 Ammopack 25 11
860240574004SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WCAP-AT1H Aluminum Electrolytic Capacitors47 µF -40 °C up to +105 °C 3.5 8000 240 16.45 12 8 Ammopack 35 11.5
860240475007SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WCAP-AT1H Aluminum Electrolytic Capacitors220 µF -40 °C up to +105 °C 5 10000 580 55 14 10 Ammopack 25 16
860080578019SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WCAP-ATLI Aluminum Electrolytic Capacitors680 µF -55 °C up to +105 °C 5 5000 2260 238 9 13 Ammopack 35 20
61302021021SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Angled Dual Pin Header1000 MΩ 2.54 Bag 3 25.4 THT 20 Dual Pin Header Angled
450301014042SPEC
5 files Active i| Production is active. Expected lifetime: >10 years.WS-SLTV THT Mini Slide Switch, Opposite Side Connection 10x2.5 mm10000 MΩ 800 SPDT Bulk 0.5 12
971100365SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WA-SPAIE Plastic Spacer Stud, metric, internal/ external Bag Polyamide
61300211121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Pin Header1000 MΩ 2.54 Bag 3 5.08 THT 2 Single Pin Header Straight
750317576SPEC
Active i| Production is active. Expected lifetime: >10 years. Inductor
750317636SPEC
Active i| Production is active. Expected lifetime: >10 years. PFC Inductor
750316907SPEC
Active i| Production is active. Expected lifetime: >10 years. Transformer
613016243121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm Angled Dual Socket Header1000 MΩ 2.54 Tray 3 20.82 THT 16 Dual Socket Header Angled
Order Code Data­sheet Simu­lation
155124BS73200SPEC
7448030509SPEC
744823422SPEC
820412711SPEC

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.

890324023023SPEC
890324024003SPEC
7447055SPEC
7447231101SPEC
860240473003SPEC
860240574004SPEC
860240475007SPEC
860080578019SPEC
61302021021SPEC
450301014042SPEC
971100365SPEC
61300211121SPEC
750317576SPEC
750317636SPEC
750316907SPEC
613016243121SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CSafety ClassdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
ISAT
(A)
fres
(MHz)
VersionTiEndurance
(h)
IRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Ø D
(mm)
Operation Force (Value)
(g)
SchematicPackagingIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
MountVRMS
(V)
VDC
(V)
VBR
(V)
IPeak
(A)
Wmax
(J)
PDiss
(mW)
ApplicationVDE ApprovalPins (Value)
(pcs)
RowsG
(mm)
GenderType Samples