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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： | 撥備待機模式操作局部共振電源IC模塊 |
| 文件頁數(shù)： | 4/19頁 |
| 文件大?。?/td> | 226K |
| 代理商： | MR2940 |
Shindengen Electric MFG.CO.,LTD
- 4 -
1.1 Introduction
The MR2900 Series IC modules are designed for both 200V and autosensing input with a burst-mode switching function at micro-
loads. These modules are of the partial resonance type, and are comprised of a switching device optimized for both 200V and
autosensing power supply input, and a control IC. They are designed to provide the following power supply characteristics.
1.2 Characteristics
1. An ultra high-speed IGBT with 900V resistance ensures high efficiency and low noise at partial resonance.
2. An ultra high-speed IGBT with 900V resistance simplifies design for autosensing power supply input.
3. Very low power consumption at micro-loads (in burst mode).
4. Onboard start-up circuit eliminates the need for start-up resistors.
5. Soft drive circuit achieves low noise levels.
6. Excess current protection function (ton limit, primary current limit).
7. Excess voltage protection and thermal shut-down function.
8. Power supply circuits may be constructed with a minimum of external components.
9. The use of a full mold package provides benefits in insulation design.
1.3 Applications
TVs, displays, printers, VTR, DVD, STB, air-conditioners, refrigerators, and other electrical appliances, and office equipment.
1.4 Absolute Maximum Ratings and Reference Output Capacities
Absolute maximum ratings
Maximum output capacity P
o
［
W
］
Peak input voltage
Peak input current
Input voltage range
Model
V
in
［
V
］
I
in
［
A
］
90V to 276VAC
180V to 276VAC
MR2920
7
100
150
MR2940
900
10
150
225
Maximum output capacity and input voltage range differ with design conditions.
1.5 Equivalent Circuit and Dimensions
4
3
2
6
7
Q1
Collector
IC1
GND
V
cc
Emitter/OCL
F/B
1
Z/C
5
V
in
4.5
±
0.5
4
±
0
4.2
5.0
±
0.2
2
±
0
3
±
0
1
±
0
12.0
6
×
1.7
±
0.3
=15.24
±
0.3
φ
3.2
+0.2
-0.1
20.0
±
0.2
1
±
0
0.7
+0.3
-0.1
2.54
±
0.2
8
7
±
0
2.7
±
0.2
0.7
±
0.2
1. Outline
MR2900
Application Note
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