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TSD-939 Datasheet(PDF) 1 Page - Premier Magnetics, Inc.

Part # TSD-939
Description  SUPPORT PRODUCTS FOR MICRO LINEAR I.C.S
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Manufacturer  PMI [Premier Magnetics, Inc.]
Direct Link  http://www.premiermag.com
Logo PMI - Premier Magnetics, Inc.

TSD-939 Datasheet(HTML) 1 Page - Premier Magnetics, Inc.

  TSD-939 Datasheet HTML 1Page - Premier Magnetics, Inc. TSD-939 Datasheet HTML 2Page - Premier Magnetics, Inc.  
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20381 BARENTS SEA CIRCLE, LAKE FOREST, CA 92630
• TEL: (949) 452-0511 • FAX: (949) 452-0512 • http://www.premiermag.com
Specifications subject to change without notice.
1
mlsuport 09/98
SUPPORT PRODUCTS
FOR MICRO LINEAR I.C.'S
M
P
Premier
Magnetics Inc.
"INNOVATORS IN MAGNETICS TECHNOLOGY"
–
Magnetics Micro Linear's ML4824 Switcher
—
Magnetics For Micro Linear's Ballast IC's
GENERAL APPLICATION ML4824-1
SCHEMATIC
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.
D
S
G
C1
F1
LINE
NEUT
90-260Vac
50/60Hz
R2A
R2B
R3
R4
C3
C2
R1A
R1B
R27
L1
TSD-734
R21
D9
C30
C5
D1
C4
D2
R7A
R7B
D
S
G
D7
R30
R17
C25
C7
C7
R12
IEAO
IAC
ISENSE
VRMS
SS
VDC
RAMP1
RAMP2
1
2
3
4
5
6
7
8
VEAO
FB
REF
VCC
V01
V02
GND
DCILIM
16
15
14
13
12
11
10
9
ML4824
Vout
+12V
12V
RETURN
D11B
L2
VTP-05007
D11A
C24
C21
R18
D5
+382VDC HOT RAIL
D
S
G
R20A
R14
C20
R20B
R19
D6
R15
R8
C11
D8
D10
R10
C17
R13
C
E
A
C
R
C
A
U3
C23
U2
R26
R24
R23
C22
R25
R22
R16
C10
Q4
R9
D4
D3
C12
3
1
7 & 8
11 & 12
6
5
1
3
4
6
36
>>
>>
>>
>>
R28
C15
C16
C13
C14
R11
C8
C9
R6
C18
C19
R5A
R5B
R5C
R5D
T1
PMGD-03
(TSD-736)
T2
TSD-735
Q1
Q2
Q3
~
~
+
-
BR1
100WATT PFC UNIVERSAL OFF-LINE SWITCHING MAGNETICS


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