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reference designIRS2982S | Demoboard DEMO_100W_24VDC_FB

Infineon Technologies IRS2982S | Demoboard DEMO_100W_24VDC_FB

100 W single-stage CrCM PFC Flyback converter using the IRS2982S and IR1161L

Overview

TopologyPower Factor Correction
Input voltage90-265 V
Switching frequency60 kHz
Output 124 V / 4.2 A
IC revision2.0

Description

The IRS2982S is a versatile SMPS controller IC primarily intended for power supply and LED drivers in the 5 to 100 W power range suitable for buck, buck-boost and Flyback converters operating in Critical Conduction Mode (CrCM) and Discontinuous Conduction Mode (DCM) at light loads. Flyback converters will be covered in this application note, focusing on an isolated voltage-regulated design with Power Factor Correction (PFC). All of the control and protection required for the converter is integrated in the IRS2982S as well as a HV start-up cell to enable rapid start-up at switch-on over a wide line input voltage range. The IRS2982S is also able to provide PFC in a single-stage Flyback converter able to meet class D line current harmonic limits of the EN 61000-3-2 standard.

Features

  • Output Over-Voltage Protection (OVP) at VOUT less than or equal to 25 V
  • Over-Current Protection (OCP) at 5.5 A
  • Short-Circuit Protection (SCP)
  • Brown-out protection, shut-down at 60 to 65 VRMS, start-up at 85 to 90 VRMS AC input voltages

Typical applications

  • Power supply and LED drivers

More information

Products

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Order Code
Data­sheet
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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
Tol. C
Size
Operating Temperature
Q
DF(%)
Ceramic Type
Fl(mm)
Endurance(h)
IRIPPLE(mA)
ILeak(µA)
Ø D(mm)
SamplesAvailability & Sample
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890334023028
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-FTXX Film Capacitors
ApplicationAcross the mains 
Capacitance220 nF
Rated Voltage310 V (AC)
Safety ClassX2 
Rate of Voltage Rise300 V/µs
Dissipation Factor0.1 %
Insulation Resistance30 GΩ
Pitch10 mm
Length13 mm
Width8 mm
Height14 mm
PackagingBulk 
Capacitance±10% 
SizePitch 10 mm 
Operating Temperature -40 °C up to +105 °C
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890334024005
SPECWCAP-FTXX Film Capacitors, Across the mains, 470 nF
Simu­lation
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-FTXX Film Capacitors
ApplicationAcross the mains 
Capacitance470 nF
Rated Voltage310 V (AC)
Safety ClassX2 
Rate of Voltage Rise280 V/µs
Dissipation Factor0.1 %
Insulation Resistance21.28 GΩ
Pitch12.5 mm
Length15 mm
Width10 mm
Height16 mm
PackagingBulk 
Capacitance±10% 
SizePitch: 12.5 mm 
Operating Temperature -40 °C up to +105 °C
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860040572002
SPECWCAP-ATUL Aluminum Electrolytic Capacitors, –, 47 µF
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Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-ATUL Aluminum Electrolytic Capacitors
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Capacitance47 µF
Rated Voltage35 V (AC)
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Pitch2 mm
Length11 mm
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PackagingAmmopack 
Capacitance±20% 
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Dissipation Factor12 %
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Endurance 5000
Ripple Current280 mA
Leakage Current16.45 µA
Diameter5 mm
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860040580016
SPECWCAP-ATUL Aluminum Electrolytic Capacitors, –, 1200 µF
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Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-ATUL Aluminum Electrolytic Capacitors
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Capacitance1200 µF
Rated Voltage35 V (AC)
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Pitch7.5 mm
Length21 mm
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PackagingAmmopack 
Capacitance±20% 
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Dissipation Factor12 %
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Endurance 10000
Ripple Current2800 mA
Leakage Current420 µA
Diameter16 mm
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860160474016
SPECWCAP-ATLL Aluminum Electrolytic Capacitors, –, 180 µF
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-ATLL Aluminum Electrolytic Capacitors
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Capacitance180 µF
Rated Voltage25 V (AC)
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Pitch3.5 mm
Length11.5 mm
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PackagingAmmopack 
Capacitance±20% 
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Dissipation Factor14 %
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Endurance 7000
Ripple Current552 mA
Leakage Current45 µA
Diameter8 mm
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885012007040
SPECWCAP-CSGP MLCCs 25 V(DC), –, 1 nF
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
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Capacitance1 nF
Rated Voltage25 V (AC)
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Insulation Resistance10 GΩ
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Length2 mm
Width1.25 mm
Height0.8 mm
Packaging7" Tape & Reel 
Capacitance±5% 
Size0805 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 
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Ceramic TypeNP0 Class I 
Pad Dimension0.5 mm
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885012208058
SPECWCAP-CSGP MLCCs 25 V(DC), –, 100 nF
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
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Capacitance100 nF
Rated Voltage25 V (AC)
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Insulation Resistance5 GΩ
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Length3.2 mm
Width1.6 mm
Height0.8 mm
Packaging7" Tape & Reel 
Capacitance±10% 
Size1206 
Operating Temperature -55 °C up to +125 °C
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Dissipation Factor3.5 %
Ceramic TypeX7R Class II 
Pad Dimension0.6 mm
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750317969
SPECOffline Transformer, –, –
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Status Activei| Production is active. Expected lifetime: >10 years.
Product series Offline Transformer
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