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參數(shù)資料
| 型號： | MR2940 |
| 廠商： | Shindengen Electric Manufacturing Company, Ltd. |
| 英文描述： | Provision for Standby mode operation Partial Resonance Power Supply IC Module |
| 中文描述： | 撥備待機(jī)模式操作局部共振電源IC模塊 |
| 文件頁數(shù)： | 3/19頁 |
| 文件大小： | 226K |
| 代理商： | MR2940 |
Shindengen Electric MFG.CO.,LTD
- 3 -
MR2900
Application Note
1. Outline
1.1 Introduction
…
4
1.2 Characteristics
1.3 Applications
1.4 Absolute Maximum Ratings
and Reference Output Capacities
1.5 Equivalent Circuit and Dimensions
…
…
4
4
…
4
…
4
2. Block Diagram
2.1 Block Diagram
2.2 Pin Function Description
…
…
5
5
3. Operation Description
3.1 Start-up Circuit
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6
3.2 On-trigger Circuit
3.3 Partial Resonance
3.4 Standby Mode Control
…
…
…
7
7
8
3.5 Output Voltage Control
3.6 Soft Drive Circuit
3.7 Circuit for Load Shorts
…
…
…
9
9
10
3.8 Collector Pin (pin 7)
3.9 Thermal Shut-down Circuit (TSD)
3.10 Over-voltage Protection Circuit (OVP)
3.11 Malfunction Prevention Circuit
…
…
…
10
10
10
(patent applied for)
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11
3.12 Over-current Protection Circuit
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11
4. Standard Circuit
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12
5. Design Procedures
5.1 Design Flow Chart
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13
5.2 Main Transformer Design Procedure
5.3 Main Transformer Design Examples
5.4 Selection of Constants for
…
…
13
15
Peripheral Components
…
18
6. Cooling Design
6.1 Junction Temperature and Power Losses
6.2 Junction Temperature
and Thermal Resistance
6.3 Cautions for Cooling Design
…
19
…
19
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19
The values presented in this document are based on tentative specifications as of June 29th, 2001, and may change in future
Contents
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