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MR4010 PDF 데이터시트 ( Data , Function )

부품번호 MR4010 기능
기능 Partial Resonance Power Supply IC Module
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MR4010 데이터시트, 핀배열, 회로
Provision for standby mode operation
Partial Resonance Power Supply IC Module
MR4000 Series
Application Note
Version 1.4
Shindengen Electric Manufacturing Co., Ltd.




MR4010 pdf, 반도체, 판매, 대치품
MR4000 Series
Application Note
1.1 Introduction
1. Overview
The MR4000 Series IC modules incorporate a burst-mode switching function at micro-loads. These are partial
resonance modules consisting of a switching device optimized for 100 V, 200 V, and auto-sensing power supply input
and a control IC. The IC modules are designed to provide the following power supply characteristics:
1.2 Characteristics
1. High efficiency and low noise through partial resonance
2. Second-generation high-speed IGBT with 900-V resistance simplifies design for auto-sensing power supply
input. (MR40XX series)
3. Burst mode helps reduce power consumption at micro-loads.
4. Onboard startup circuit eliminates the need for startup resistors.
5. Soft-drive circuit achieves low noise levels.
6. Overcurrent protection function (ton limit and primary current limit), overvoltage protection, and thermal
shutdown function
7. Allow configuration of a power supply circuit with fewer external components.
8. Full-mold package facilitates insulation design.
1.3 Applications
Televisions, displays, printers, video recorders, DVD, STB, refrigerators, and other appliances; various automated
business machines
1.4 Absolute maximum ratings and reference output capacities
型名
MR4500
MR4510
MR4520
MR4530
MR4710
MR4720
MR4010
MR4020
MR4030
MR4040
Main switching device
Maximum output capacity Po[W]
VDS/VCE
Input voltage range
[V] AC90 - 132V AC180 - 276V AC90 - 276V
MOSFET
500
Second–
generation
high-speed
IGBT
700
900
12 (20)
25 (40)
50 (80)
80 (100)
25 (40)
50 (80)
65
105
135
180
12 (20)
25 (40)
45
70
90
120
Maximum output capacity and input voltage range vary with design parameters.
Output capacities in parentheses are peak values.
Shindengen Electric MFG.CO.,LTD
-4-

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MR4010 전자부품, 판매, 대치품
MR4000 Series
Application Note
3. Operating principles
3.1 Startup circuit
In a conventional startup circuit employing a startup resistor,
an electric current continues to flow after the power supply
starts, wasting power and reducing efficiency, especially
during standby.
See [Conventional startup circuit] in Fig. 3.1 Comparison of
startup circuits.
[Conventional startup circuit]
Startup current
IC
In the MR4000 Series startup circuit, the startup current is
supplied from the input voltage and shut off when the power
supply starts up.
The startup current flows even
during steady-state operation,
resulting in losses.
[MR4000 startup circuit]
The startup circuit supplies the Istartup current from the
constant current source in the IC until the voltage at the VCC
pin reaches VCC(start) = VCC(startup off). This current is consumed
internally in the IC and also used as the charging current for
The startup current switches off
after startup, eliminating the
need for a startup resistor.
Vin pin
7
the capacitor connected externally between the VCC pin and
GND. This design allows stable startup with minimal
dependence on the input voltage.
When the voltage at the VCC pin reaches VCC(startup off) =
VCC pin
4
VCC(start), the startup circuit disconnects, and the startup
Vcc (startup off)/Vcc (startup on)
current is halted. As soon as it stops, oscillation begins.
The current to be consumed in the IC is then supplied from
the control coil.
Control coil
See [MR4000 startup circuit] in Fig. 3.1 Comparison of
startup circuits.
In the case of an instantaneous power failure or a load short,
Fig. 3.1 Comparison of startup circuits
oscillation stops when the voltage at the VCC pin reaches VCC(stop). When this voltage drops still further to VCC(startup on),
the startup circuit begins to operate once again, and the voltage at the VCC pin begins to rise. See Fig. 3.2.
Incorporating the functions above improves efficiency, particularly during standby, and eliminates the need for a startup
resistor, thereby reducing the overall number of components.
VCC (startup off)
=VCC (Start)
VCC (stop)
VCC (startup on)
[Vin]
[VCC]
[VDS(VCE)]
[VOUT]
Instantaneous
power failure
Load short
Fig. 3.2 Startup circuit operation sequence
Shindengen Electric MFG.CO.,LTD
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