P
Premier
M
Magnetics Inc.
"INNOVATORS IN MAGNETICS TECHNOLOGY"
SUPPORT PRODUCTS
FOR MICRO LINEAR I.C.'S
Magnetics For Micro Linear's Ballast IC's
Magnetics Micro Linear's ML4824 Switcher
GENERAL APPLICATION ML4824-1
Premier Magnetics' TSD-735 Switch Mode Transformer was designed for use with MICRO LINEAR'S ML4824-1 PFC/PWM
Combination off-line controller IC, in the Two Transistor Single-Ended Forward Converter Configuration. This
converter topology can provide isolated multiple outputs with efficiencies up to 90%. Premiers' TSD-735 transformer
has been optimized to provide maximum power throughput and to provide the necessary bias voltage for the
ML4824-1 and it's auxiliary circuitry.
The ML4824-1 from Micro Linear is highly integrated power supply controller, incorporating a PFC front end operating
at 100KHz, and a synchronized PWM switching regulator running @ 50KHz. This combination provides all necessary
functions for a Universal-Input, Power Factor Corrected DC power supply in the 50 to 500W output range. The TSD-
734 boost inductor and TSD-735 output transformer are critical to the performance of the circuit. Together they define
the harmonic reduction, efficiency, output power and the size of the Power Factor Correction and DC output stages.
Below is a typical universal input, high precision application circuit utilizing Micro Linear's ML4824-1 PFC/PWM control
IC. The AC mains voltage is power factor corrected and boosted to 382VDC by the PFC half of the ML4824-1 and
the TSD-734 PFC boost inductor. The PWM half of the ML4824-1 and the PMGD-03 gate drive transformer then provide
the MOSFET gate drives for operating the TSD-735 output transformer which converts the 382VDC hot rail to a
regulated 12VDC, 100W output. Recommended component values can be obtained from Micro-Linear's ML4824-
1 application notes. Evaluation boards are available from Micro Linear.
D2
100WATT PFC UNIVERSAL OFF-LINE SWITCHING MAGNETICS
SCHEMATIC
+382VDC HOT RAIL
Q2
C4
R17
R7A
C25
R30
D5
6
D7
L2
VTP-05007
+
G
S
D
LINE
>>
F1
~
+
L1
TSD-734
3
Q1
6
D
D1
90-260Vac
50/60Hz
NEUT
>>
C1
BR1
R2A
R1A
R2B
C3
R3
C2
R4
R1B
R27
R21
G
S
D9
C5
~
-
R7B
T1
PMGD-03
(TSD-736)
1
3
4
T2
TSD-735
3
PRIMARY
11 & 12
SECONDARY
D11A
>>
C24
+
D11B
+12V
C30
R15
C20
R14
BIAS
+
C7
R12
C7
16
15
14
13
12
11
10
9
Vout
R18
1
Q3
G
S
D6
D
C21
12V
RETURN
7 &8
>>
D3
C12
+
6
R19
R20A
R20B
5
C17
R28
R9
R13
Q4
R16
R24
+
R23
C22
R6
D4
+
C
U2
1
2
3
4
5
6
7
8
ML4824
IEAO
IAC
ISENSE
VRMS
SS
VDC
RAMP1
RAMP2
VEAO
FB
REF
VCC
V01
V02
GND
DCILIM
A
C10
C
E
R22
R11
C15
R8
R10
C16
C13
C14
R26
U3
C23
C8
C9
C
R
A
R25
R5A
R5B
R5C
R5D
C19
D8
C18
C11
D10
Specifications subject to change without notice.
mlsuport 09/98
20381 BARENTS SEA CIRCLE, LAKE FOREST, CA 92630
•
TEL: (949) 452-0511
•
FAX: (949) 452-0512
•
http://www.premiermag.com
1
P
Premier
M
Magnetics Inc.
"INNOVATORS IN MAGNETICS TECHNOLOGY"
SUPPORT PRODUCTS
FOR MICRO LINEAR I.C.'S
GENERAL ELECTRICAL SPECIFICATIONS AT 25
O
C - OPERATING TEMPERTURE RANGE 0
O
C TO +70
O
C
The following magnetics have been designed for use with a variety of Micro Linear semiconductors.
To receive complete specifications & application information, please contact the factory or fill out our
Literature Request
form to recieve the respective part number detail data sheet.
PART
NUMBER
TSD-734
TSD-735
TSD-1047
TSD-1048
PMGD-03
TSD-845
TSD-835
TSD-939
TSD-938
TSD-746
TSD-917
PMGD-04
TSD-748
TSD-749
TSD-789
TSD-780
TSD-843
TSD-800
TSD-801
TSD-918
TSD-802
TSD-919
TSD-831
TSD-844
TSD-902
TSD-903
TSD-882
TSD-965
TSD-1086
TSD-1082
TSD-1087
TSD-892
TSD-1085
TSD-756
TSD-904
Micro Linear
I.C.
Part Number
Package
APPLICATION INFORMATION
ML4824
ML4824
ML4824
ML4824
ML4824
ML4826
ML4826
ML4826
ML4826
ML4831
ML4831
ML4831
ML4831
ML4831
ML4821
ML4831
ML4831
ML4831
ML4831
ML4831
ML4831
ML4831
ML4831
ML4831
ML4831
ML4831
ML4832
ML4833
ML4833
ML4833
ML4833
ML4833
ML4833
ML4863
ML4900
PFC Boost Inductor, ML4824-1 EVAL, 100W @ 50KHz
Main Switching Transformer, ML4824-1 EVAL, 100W @ 100KHz
PFC Boost Inductor, ML4824-2 EVAL, 100W @ 100KHz
Main Switching Transformer, ML4824-2 EVAL, 100W @ 200KHz
Gate Drive Transformer (formerly TSD-736), ML4824-1 EVAL
PFC Boost Inductor, ML4826 @ 500W
Main Switching Transformer, ML4826, 500W Multiple Outputs
PFC Boost Inductor, ML4826 @ 650W
Main Switching Transformer, ML4826, 650W Multiple Outputs
Boost Inductor, T1 on ML4831 220V EVAL Board
Boost Inductor, T1 HORZ version on ML4831 220V EVAL Board
Gate Drive, T2 on ML4831 220V EVAL Board (formerly TSD-747)
Main Switching Transformer, T4 on ML4831 220V EVAL Board
Current Sense Transformer, T5 on ML4831 220V EVAL Board
T1 on ML4821-EVAL, PFC Controller
Main Switching Transformer, T4 on ML4831 277V EVAL Board
Main Switching Transformer, T4 HORZ version ML4831 277V EVAL
Main Switching Transformer, T3 on ML4831 220V Low Cost EVAL
Power Transformer, T3 Variation on ML4831 220V EVAL Board
Power Transformer, T3 HORZ version Variation on ML4831 220V
Main Transformer, T4 Variation on ML4831 220V EVAL
Main Transformer, T4 HORZ version Variation on ML4831 220V
Boost Inductor, T1 on ML4831 120V EVAL Board
Boost Inductor, T1 HORZ version ML4831 120V EVAL
100KHz ZVS PFC Boost Inductor
100KHz ZVS PFC Resonant Inductor
Boost Inductor, T1 on ML4832 220V EVAL Board
Boost
Boost
Boost
Boost
Boost
Boost
Inductor, T1 on ML4833 220V Dimming EVAL Board
Inductor, T1 HORZ version, ML4833 220V Dimming EVAL
Inductor, T1 on ML4833 120V Dimming EVAL Board
Inductor, T1 HORZ version, ML4833 120V Dimming EVAL
Inductor, T4 on ML4833 220V Dimming EVAL Board
Inductor, T4 HORZ version, ML4833 220V Dimming EVAL
E375
EE30
E375
EI33/29
EP7
E55/21
ETD-49
E55/21
E55/21
EF25-VERT
EF25-HORZ
EP10
EF25-VERT
EF25-VERT
PQ40
EF25-VERT
EF25-HORZ
EF25-VERT
EF25-VERT
EF25-HORZ
EF25-VERT
EF25-HORZ
EF25-VERT
EF25-HORZ
E42/20
E2425
EF25-VERT
EF25-VERT
EF25-HORZ
EF25-VERT
EF25-HORZ
EF25-VERT
EF25-HORZ
EF25-VERT
Toroid
mlsuport 09/98
Flyback Transformer, Vin = 3.3V, Vout= 3.3V, 5.0V & 12V
15A Powdered Iron inductor, 1.4uHy
Specifications subject to change without notice.
20381 BARENTS SEA CIRCLE, LAKE FOREST, CA 92630
•
TEL: (949) 452-0511
•
FAX: (949) 452-0512
•
http://www.premiermag.com
2
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