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TSD-800

产品描述SUPPORT PRODUCTS FOR MICRO LINEAR I.C.S
文件大小45KB,共3页
制造商Premier Magnetics, Inc.
官网地址http://www.premiermag.com/
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TSD-800概述

SUPPORT PRODUCTS FOR MICRO LINEAR I.C.S

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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
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