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MR4530 Datasheet(PDF) 3 Page - Shindengen Electric Mfg.Co.Ltd

Part # MR4530
Description  Partial Resonance Power Supply ICModule
PDF  43 Pages
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Manufacturer  SHINDENGEN [Shindengen Electric Mfg.Co.Ltd]
Direct Link  http://www.shindengen.co.jp/
Logo SHINDENGEN - Shindengen Electric Mfg.Co.Ltd

MR4530 Datasheet(HTML) 3 Page - Shindengen Electric Mfg.Co.Ltd

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Shindengen Electric MFG.CO.,LTD
- 3 -
1. Overview
…
4
1.1
Introduction
…
4
1.2
Characteristics
…
4
1.3
Applications
…
4
1.14 Absolute maximum ratings
and reference output
capacities
…
4
1.5
Dimensions and equivalent
circuit
…
5
1.6
Basic circuit
…
5
2. Block diagram
…
6
2.1
Block diagram
…
6
2.2
Pin function description
…
6
3. Operating principles
…
7
3.1
Startup circuit
…
7
6. Supplementary design information
…
49
3.2
On-trigger circuit
…
8
6.1
Supplementary notes on
design
…
51
3.3
Partial resonance
…
8
6.2
Noise reduction
…
58
3.4
Standby mode control
(patent pending)
…
9
6.3
Supplemental information on
surface mounting
…
60
3.5
Output voltage control
(normal operation)
…
10
6.4
Precautions for waveform
measurements
…
61
3.6
Soft drive circuit (patent
pending)
…
10
6.5
Notes on pattern design
…
62
3.7
Circuit for load shorts
…
11
6.6
Application circuit examples
…
64
3.8
Collector pin (MR40XX
Series)
…
11
6.7
Troubleshooting list
…
67
3.9
Thermal shutdown circuit
(TSD)
…
11
6.8
Glossary
…
69
3.10 Overvoltage protection
circuit (OVP)
…
11
3.11 Leading edge blank (LEB)
…
11
3.12 Malfunction prevention
circuit (patent pending)
…
12
3.13 Overcurrent protection
circuit
…
12
4. Design procedure
…
13
4.1
Design flow chart
…
13
4.2
Reference conditions for
main transformer design
…
13
4.3
Reference formulas for main
transformer design
…
14
4.4
Selecting constants for
peripheral components
…
16
4.5
Selecting constants for
droop circuit
…
17
4.6
Cooling design
…
18
Contents
MR4000 Series
Application Note



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