IRPLDIM3
IRPLDIM3 Wide Range Input Linear Dimming Fluorescent Ballast
using the IRS2158D
Table of Contents
Page
1. Features…………………………………………………………………...….2
2. Description.............................................................................................2
3. Electrical Characteristics .......................................................................3
4. Fault Protection Characteristics.............................................................3
5. IRPLDIM3 Schematics…... ....................................................................4
6. PCB Component Placement Diagram and Board Fabrication…………. 5
7. Bill of Material and Inductor Specification………………………..……… .8
8. Functional Description…........................................................................13
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1. Features
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Drives 1 x 28W TL5 Lamp
Input Voltage: 90-305Vac
High Power Factor/Low THD
High Frequency Operation
Lamp Filament Preheating
Lamp Fault Protection with Auto-Restart
Low AC Line/Brownout Protection
End of Lamp Life Shutdown
IRS2158D
HVIC Ballast Controller
2. Description
The IRPLDIM3 reference design kit consists of a high power factor wide input voltage range
dimming Fluorescent ballast, with a fully isolated 0 to 10V control interface, driving a single T5 28 W
rapid start linear lamp. The design contains an EMI filter, active power factor correction and a dimming
ballast control circuit using the PDIP16 version of
IRS2158D.
This demo board is intended to help with the
evaluation of the IRS2158D dimming ballast control IC, demonstrate PCB layout techniques and serve as
an aid in the development of production ballasts using the IRS2158D
Fig 1. IRPLDIM3 Block Diagram
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3. Electrical Characteristics
Parameter
Lamp Type
Input Power
Lamp running voltage
Run Mode Frequency
Preheat Mode Frequency
Preheat Time
Lamp Preheat Voltage
Lamp Ignition Voltage
Input AC Voltage Range
Power Factor
Units
[W]
[Vpp]
[kHz]
[kHz]
[s]
[Vpp]
[kVpp]
[VAC]
Value
28W TL5
30
600
50
56
1.0
600
2.0
90-305VAC
0.995 at 120VAC
0.98 at 220 VAC
4. Fault Protection Characteristics
Fault
Brown-out
Upper filament broken
Lower filament broken
Failure to ignite
No lamp
End of life
Protection
VDC Brown-out detect
CS Over Current detect
SD Open filament detect on
SD/EOL pin
CS Ignition detection timeout
SD Open filament detect on
SD/EOL pin
EOL lamp voltage detection on
SD/EOL pin
Ballast
Shutdown
Deactivates
Deactivates
Deactivates
Deactivates
Deactivates
Restart Operation
Line voltage increase
Lamp exchange
Lamp exchange
Lamp exchange
Lamp inserted
Lamp exchange
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D1
RS1
RCPH
R23
1
MHS
RPU2
COUT1
LRES-1
VS
LPFC
R6
RPU1
16
15
VB
HO
CPH
CPH
RS2
RHO
R1
RFMIN
FMIN
D4
RPH
VCO
R24
CBOOT
R4
RDC
CVCC1
DCP2
RLO
MLS
CS
2
CDC
R21 DCP1
CSNUB
LRES
3
14
VCC
F1
VCO DOUT
CT
L1
R10
CT
VDC
COM
L
4
CVCC2
5
LO
RV1
12
11
RLIM
10
SD/EOL
C1
R11
1
8
13
5. IRPLDIM3 Schematics
N
R9
6
NINV
3
2
7
BR1
C4
R7
MPFC
7
6
REOL1
CRES
REOL2
REOL3
DEOL2 DEOL1
R2
ROUT
OUT
GND
C5
IRS2158D
CY
L6562
D5
INV
CC1
CBUS1
RDIM
DSD1
RSD
DSD2
CVDC
RVDC
RIN
RS
CBUS2
R22
CCS
CSD1
CSD2
CC2
RFB
8
9
4
5
C2
IC1
R3 C3
R12
CEOL
REOL4
DS1
RCS
CLS
RLS
COUT2 LRES-2
DS2
D2
R8
R14
R20
3
2
4
IC4
5
R5
6
C10
R19
CDIV
IC3
C8
C7
7
VR1
1
8
R18
R13
R15
R16
LPFC
AUX
C9
D3
C6
Q1
0 to 10V IN
C11
R17
Fig. 2: Schematic Diagram, IRS2158D, Single Lamp, Voltage Mode Heating
0 to 10V RTN
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6. PCB Component Placement Diagram and Board Fabrication
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