ml4832 Microsemi Corporation, ml4832 Datasheet - Page 11

• Manufacturer Part Number: ml4832
• Description: Electronic Dimming Ballast Controller
• Manufacturer: Microsemi Corporation

TYPICAL APPLICATIONS
Figures 9 and 10 show ballast schematics, both non-
dimming and dimming. These are power-factor corrected
60W ballasts designed to operate two series connected
F32T8 fluorescent lamps. Both Schematics, Figures 9 and
10, are of previously published ML4831 circuits that have
TO CONVERT FROM AN EXISTING NON-DIMMING
ML4831 TO THE ML4832:
Resistors
Change:
Add:
Delete:
Capacitors
Change:
Add:
Magnetics
Change:
R4
R9
C5
T1
R6, R7 to
R7
R18
R13
R14
R24
R22
R23
C7
C11
C12
C18
C20
C23
to
to
to
to
to
to
to
to
to
to
to
to
TSD-882
51k ,
866k ,
75k ,
470 ,
5.76k ,
499k ,
75k ,
51 ,
100 ,
10nF, 63V, 10% ceramic
180pF, 100V, 5% ceramic
1nF, 100V, 10% ceramic
100nF, 100V, 10% ceramic
100µF, 16V, 20% electrolytic
100µF, 25V, 20% electrolytic
33nF, 50V, 20% ceramic
1
/
1
1
1
1
1
4
/
/
/
1
/
1
/
4
4
4
4
4
1
W, 5%, carbon film
/
/
4
/
4
W, 5% carbon film
W, 5%, carbon film
W, 5%, carbon film
W, 5%, carbon film
W, 5%, carbon film
4
W, 1%, metal film
W, 5%, carbon film
W, 1%, metal film
been modified for ML4832 compatibility. The value
changes and component additions made for ML4832
compatibility were for different amplifier compensation,
bootstrap/bias and protection and do not effect the validity
of the circuit description, operational information or
equations.
TO CONVERT FROM AN EXISTING DIMMING ML4831
TO THE ML4832:
Resistors
Change:
Add:
Delete:
Capacitors
Change:
Add:
Diodes
Delete:
Magnetics
Change:
R4
R9
C5
D10, D13
T1
R6, R11 to
R7
R18
R13
R14
R26
R32
R30
R31
C7
C25
C12
C24
C20
C27
C26
to
to
to
to
to
to
to
to
to
to
to
to
to
TSD-882
51k ,
866k ,
75k ,
470 ,
5.76k ,
499k ,
200k ,
75k ,
51 ,
100 ,
10nF, 63V, 10% ceramic
180pF, 100V, 5% ceramic
1nF, 100V, 10% ceramic
100nF, 100V, 10% ceramic
100µF, 16V, 20% electrolytic
100µF, 25V, 20% electrolytic
33nF, 50V, 20% ceramic
100nF, 100V, 10% ceramic
1
/
1
1
1
1
1
4
/
/
/
1
/
1
1
/
4
4
4
4
4
1
W, 5%, carbon film
/
/
/
4
/
4
4
W, 5%, carbon film
W, 5%, carbon film
W, 5% carbon film
W, 5%, carbon film
W, 5%, carbon film
4
W, 1%, metal film
W, 5%, carbon film
W, 5%, carbon film
W, 1%, metal film
ML4832
11