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TSD-938 PDF预览

TSD-938

更新时间: 2024-11-21 05:54:27
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SUPPORT PRODUCTS FOR MICRO LINEAR I.C.S

TSD-938 数据手册

 浏览型号TSD-938的Datasheet PDF文件第2页 
SUPPORT PRODUCTS  
FOR MICRO LINEAR I.C.'S  
Premier  
P
M
Magnetics Inc.  
"INNOVATORS IN MAGNETICS TECHNOLOGY"  
Magnetics Micro Linear's ML4824 Switcher  
GENERAL APPLICATION ML4824-1  
Magnetics For Micro Linear's Ballast IC's  
100WATT PFC UNIVERSAL OFF-LINE SWITCHING MAGNETICS  
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.  
SCHEMATIC  
D2  
L1  
TSD-734  
D1  
F1  
+382VDC HOT RAIL  
Q2  
3
6
LINE  
>>  
~
+
-
D
S
D
S
Q1  
G
90-260Vac  
50/60Hz  
R17  
G
BR1  
C4  
R2A  
R2B  
R27  
C1  
C5  
R1A  
R1B  
R7A  
R7B  
C25  
NEUT  
>>  
~
T1  
R21  
D9  
R30  
PMGD-03  
(TSD-736)  
D5  
6
1
C3  
D7  
L2  
R3  
R4  
T2  
TSD-735  
VTP-05007  
D11A  
4
+12V  
3
>>  
C2  
3
11 & 12  
C30  
C24  
Vout  
12V  
R15  
D11B  
C21  
1
R18  
C20  
D
S
Q3  
G
7 & 8  
6
>>  
RETURN  
R14  
D3  
D6  
C12  
5
R19  
R20A  
R20B  
C17  
R24  
R23  
R28  
R9  
R13  
R16  
Q4  
C22  
C7  
R12  
U2  
R6  
D4  
C7  
C
E
A
C
R22  
ML4824  
1
2
3
4
5
6
7
8
16  
IEAO  
IAC  
ISENSE  
VRMS  
SS  
VEAO  
FB  
REF  
VCC  
V01  
V02  
C10  
15  
14  
13  
12  
11  
10  
9
R11  
R26  
VDC  
RAMP1  
RAMP2  
C15  
C16  
C13  
C14  
GND  
DCILIM  
U3  
R
C23  
R8  
R10  
D10  
C8  
C9  
C
A
R5A  
R5B  
R5C  
R5D  
C19  
C18  
C11  
D8  
R25  
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

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