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reference designNCP1602 | Demoboard EVBUM2341-D

Onsemi NCP1602 | Demoboard EVBUM2341-D

Implementing High Power Notebook Adapter Evaluation Board User's Manual

Overview

TopologyLLC Resonant Converter
Input voltage85-260 V
Output 119.5 V / 7.7 A
IC revision1

Description

This evaluation board user’s manual provides elementaryinformation about a high efficiency, low no-load power consumptionreference design that is targeting power laptop adapter or similar typeof equipment that accepts 19.5 VDC on the input.The power supply implements PFC front stage to assure unity powerfactor and low THD, current mode LLC power stage to enhancetransient response and secondary side synchronous rectification tomaximize efficiency. This design focuses mainly on the NCP1399current mode LLC controller description – please refer to NCP1602and NCP4305 material to gain more information about these devices.The NCP1399 is a current mode LLC controller which means thatthe operating frequency of an LLC converter is not controlled viavoltage (or current) controlled oscillator but is directly derived fromthe resonant capacitor voltage signal and actual feedback level. Thiscontrol technique brings several benefits compare to traditionalvoltage mode controllers like improved line and load transientresponse and inherent out of zero voltage switching protection. TheLLC controller also features built-in high voltage startup and PFCoperation control pins that ease implementation of a power supplywith PFC front stage and no standby power supply on board.The enhanced light lad operation of the LLC controller allowsSMPS design to pass the latest no-load and light load consumptionlimits and still keeping output regulated with excellent transientresponse from no-load to full-load steps.

Features

Wide Input Voltage Range

  • Small Form Factor/High Power Density
  • High Efficiency
  • Low No-load Power Consumption
  • Fast Startup
  • X2 Capacitor Discharge Function
  • Near Unity Power Factor
  • Low Mains Operation Protection
  • Overload Protection
  • Secondary Short Circuit Protected
  • Thermal Protection
  • Regulated Output Under any Conditions
  • Excellent Load and Line TransientResponse
  • Capability to Implement Off-mode forExtremely Low No-load PowerConsumption

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Application
C
VR(V (AC))
Safety Class
dV/dt(V/µs)
DF @ 1 kHz(%)
RISO
Pitch(mm)
L(mm)
W(mm)
H(mm)
Packaging
Endurance(h)
IRIPPLE(mA)
ILeak(µA)
DF(%)
Ø D(mm)
VRMS(V)
VDC(V)
VBR(V)
IPeak(A)
Wmax(J)
PDiss(W)
VDE Approval
SamplesAvailability & Sample
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820512711
SPECWE-VD Disk Varistor, 230 VAC, –
Simu­lation
Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-VD Disk Varistor
Application230 VAC 
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Length12.5 mm
Width4.4 mm
Height16 mm
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Diameter12.5 mm
AC Operating Voltage275 V
DC Operating Voltage350 V
(Reverse) Breakdown Voltage430 V
(Reverse) Peak Pulse Current2500 A
Energy Absorption66 J
Power Dissipation0.4 W
VDE ApprovalYes 
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890334024003
SPECWCAP-FTXX Film Capacitors, Across the mains, 330 nF
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-FTXX Film Capacitors
ApplicationAcross the mains 
Capacitance330 nF
Rated Voltage310 V (AC)
Safety ClassX2 
Rate of Voltage Rise260 V/µs
Dissipation Factor0.1 %
Insulation Resistance30 GΩ
Pitch12.5 mm
Length15 mm
Width8.5 mm
Height14 mm
PackagingBulk 
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860020475016
SPECWCAP-ATG5 Aluminum Electrolytic Capacitors, –, 680 µF
Simu­lation
Availability
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Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-ATG5 Aluminum Electrolytic Capacitors
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Capacitance680 µF
Rated Voltage25 V (AC)
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Pitch5 mm
Length16 mm
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PackagingAmmopack 
Endurance 2000
Ripple Current520 mA
Leakage Current170 µA
Dissipation Factor14 %
Diameter10 mm
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