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TSD-850 PDF预览

TSD-850

更新时间: 2024-01-13 03:06:54
品牌 Logo 应用领域
PMI 变压器SMPS变压器开关
页数 文件大小 规格书
4页 41K
描述
SWITCH MODE DC/DC POWER CONVERSION TRANSFORMERS

TSD-850 技术参数

生命周期:ActiveReach Compliance Code:unknown
风险等级:5.69Is Samacsys:N
变压器类型:SMPS TRANSFORMERBase Number Matches:1

TSD-850 数据手册

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SWITCH MODE DC/DC  
POWER CONVERSION  
TRANSFORMERS  
Premier  
P
M
Magnetics Inc.  
"INNOVATORS IN MAGNETICS TECHNOLOGY"  
! Designed for use with Leading Controller Chips  
# Provides DC/DC Conversion & Isolation  
" Design Engineenring Support Available.  
$ Multiple Configurations.  
GENERAL APPLICATION INFORMATION  
Premier Magnetics' Switch Mode Output transformers have been designed for use with the most popular current-  
mode switching regulators such as Linear Technologies LT1X7X & National Semiconductors LM25XX series of High  
Efficiency Switching Regulators. These output transformers have been optimized to provide maximum power  
throughput in the smallest packages currently available. This combination of components finds wide use in  
Distributed Power Systems where a main dc voltage bus is converted for use on or near the circuits being served.  
These types of switching regulators provide a very simple solution to power conversion designs. The inductor or  
transformer used are critical to the overall performance of the converter and typically define the overall efficiency,  
output power and physical size.  
The following tables of transformers were designed for use in the Flyback Buck-Boost circuit configuration. This  
conversion topology allows the output voltage to be regulated higher or lower than the input voltage. It can also  
provide isolated or non-isolated multiple outputs. Typical efficiency of this topology is 75%.  
Below is a typical application circuit utilizing Linear Technologies LT1X7X switching regulator in the flyback buck-  
boost configuration. The use of Premiers VTP-01XXX or VTK-01XXX optional output filter choke will drastically reduce  
output ripple and noise. The component values listed are intended for reference purposes only. The Output Filter(s),  
Damper Network & Foldback Current Limiting Network are optional depending on the specific application.  
General Component Values:  
R3 = 1.0K 1/8W  
C3 = 2.2uF Film  
R4 = 1.5K 1W Snubber  
C4 = .47uF Film  
SCHEMATIC  
D1 = MBRXXX, Schottky Rectifier  
D2 = MBRXXX, Schottky Rectifier  
D3 = MBRXXX, Schottky Rectifier  
C1 = Electrolytic  
R5 = 2.0K 1W  
C7 = Electrolytic  
C5 = 0.1uF Ceramic  
L1 = 10uHy @ Rated DC amps (VTP-XXXX)  
L2 = 10uHy @ Rated DC amps (VTP-XXXX)  
R6 = 1% Metal Film as needed.  
C6 = 1000uF Electrolytic  
C8 = 1000uF Electrolytic  
OUTPUT FILTER  
D3  
+Vout2  
Np:Ns2  
L2  
R1 = 1% Metal Film, For 5Vdc = 3.0K, For 9Vdc = 9.09K  
R1 = [Vout-Vref/Vref] * R2, where Vref = 1.244 for LT1X7X series  
R2 = 1% Metal Film, For 5Vdc = 1.0K, For 9Vdc = 1.5K  
C2 = Input Bypass Capacitor 100uF Electrolytic  
+
+
Isolated Output  
-Vout2  
C7  
C8  
FLYBACK Buck-Boost CONVERTER USING LT1X7X  
OUTPUT FILTER  
RC Snubber  
Damper  
D1  
+Vout1  
+Vin  
T1  
L1  
R4  
C4  
+
+
R5  
C1  
C6  
C5  
D2  
R1  
R6  
Vin  
Vsw  
FB  
Linear Technology  
LT-1X70 = 5A  
LT-1X71 = 2.5A  
LT-1X72 = 1.25A  
LT-107X = 40KHz  
LT-117X = 100KHz  
Np:Ns1  
+
C2  
*
*
E1 E2 GND  
Vc  
R3  
R2  
C3  
Specifications subject to change without notice.  
pmsm 6/97  
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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