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IRS2982S
Multimode Flyback Controller for LED lighting
Josh Feng (PMM DCDC PMD PM)
IRS2982S features and benefits
Features
Benefits
High voltage startup cell (600 V)
Fast time to light < 0.5 s
Eliminate external components for voltage dividing
CrCM/DCM operation
Wide range applications, suitable for dimming LED
converter in the current range between 1% up to 100%
Burst mode capability
Low standby power
Multiple primary side control configurations
Isolated flyback with CV mode
Non-isolated flyback with CC or CV mode
Optimized one stage PFC + flyback
Low line power factor > 0.9
Low current THD < 20%
Direct feedback
Stable Vref, Vcs over temperature
Very accurate CV or CC regulation
Recommended dimming circuitry
Triac dimming capable
ZX, CS pins to prevent abnormal conditions
Over voltage and over current protection
Wide input voltage range
Covering 85 Vac ~ 305 Vac
Multiple LED topology configuration:
flyback, buck, boost, and sepic
February 2016
Versatile in LED designs
Copyright © Infineon Technologies AG 2016. All rights reserved.
2
Isolated flyback Application
Constant voltage regulation
DFB
CSN
RSN
RVCC
+VOUT
DVCC
T1
DSN
CIN
RFB1
BR1
HV
IC1
2
AC
Line
Input
COMP
3
ZX
4
IRS2982
FB
VCC
8
CVCC
1
RZX1
DZ
CS
OUT
CVOUT
ROUT
7
COM
6
CS
5
RG
RFB2
CCOMP
M1
RF
RCS
CF
RZX2
CI
February 2016
Copyright © Infineon Technologies AG 2016. All rights reserved.
-VOUT
3
IRXLED04
50 W Flyback Eval Board
›
›
Isolated flyback with CV
Board size 4.4” x 2.2”
February 2016
Copyright © Infineon Technologies AG 2016. All rights reserved.
4
MOSFET Recommendations
Mid & Low Power QR Flyback Topologies
800 V CoolMOS™ CE
RDS(ON)
[mΩ]
TO-220
FullPAK
TO-252
DPAK
IPD80R2K8CE
TO-251
IPAK
IPU80R2K8CE
1400
IPA80R1K4CE
IPD80R1K4CE
IPU80R1K4CE
1000
650
460
IPA80R1K0CE
IPA80R650CE
IPA80R460CE
IPD80R1K0CE
IPU80R1K0CE
310
IPA80R310CE
2800
February 2016
Copyright © Infineon Technologies AG 2016. All rights reserved.
5
IRS2982S Multimode Flyback Controller
http://www.irf.com/part/_/A~IRS2982S
Support
For more information, please
visit the product pages on
the Infineon website.
February 2016
Copyright © Infineon Technologies AG 2016. All rights reserved.
6
Summary
› Key features and benefits:
›
High voltage startup cell (600 V)
›
CrCM/DCM operation
›
Burst mode capability
›
Accurate constant voltage/current regulation
›
Optimized one stage PFC + flyback
›
Cycle by cycle over-current protection
›
Open load over voltage protection
› Target applications:
›
Mid-range to high end LED drivers for:
›
Outdoor
›
Interior office
›
Industrial lighting
February 2016
Copyright © Infineon Technologies AG 2016. All rights reserved.
7