- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370963 > M51996AP (Mitsubishi Electric Corporation) RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS PDF資料下載
參數(shù)資料
| 型號： | M51996AP |
| 廠商： | Mitsubishi Electric Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 抗輻射高效，5安培開關(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 16/22頁 |
| 文件大?。?/td> | 366K |
| 代理商： | M51996AP |
SWITCHING REGULATOR CONTROL
M51996AP/FP
MITSUBISHI (Dig./Ana. INTERFACE)
( / 22 )
16
It is recommended to connect the capacitor between OVP
terminal and GND for avoiding the miss operation by the spike
noise.
The OVP terminal is connected with the sink current source
(~150μA) in IC when OVP does not operate,for absorbing the
leak current of the photo coupler in the application.
So the resistance between the OVP terminal and GND for leak-
cut is not necessary.
If the resistance is connected,the supply current at the OVP
reset supply voltage becomes large.
As the result,the OVP reset supply voltage may become higher
than the operation stop voltage.
In that case,the OVP action is reset when the OVP is triggered
at the supply voltage a little high than the operation stop
voltage.
So it should be avoided absolutely to connect the resistance
between the OVP terminal and GND.
(1)To avoid the miss operation of OVP
OVP circuit
M51996A
OVP
GND
Vcc
Fig.21 Peripheral circuit of OVP terminal
5.6k
PHOTO COUPLER
M51996A
MAIN
TRANSFORMER
THIRD
WINDING
CVcc
GND
Vcc
FIG.23 OVP setting method using the induced
third winding voltage on fly back system
The reset time may becomes problem when the discharge time
constant of C
FIN
(R1+R2) is long. Under such the circuit
condition,it is recommended to discharge the C
VCC
forcedly and
to make the Vcc low value;This makes the OVP-reset time fast.
(2)Application circuit to make the OVP-reset time fast
For the over voltage protection (OVP),the induced fly back type
third winding voltage can be utilized,as the induced third
winding voltage depends on the output voltage.Fig.23 shows
one of the example circuit diagram.
(3)OVP setting method using the induced third winding
voltage on fly back system
M51996A
Fig.22 Example circuit diagram to make the
OVP-reset-time fast
~
R1
R2
GND
Vcc
TO MAIN
TRANSFORMER
C
FIN
Cvcc
THE TIME CONSTANT OF
THIS PART SHOULD BE SHORT
470
OVP
To REG or Vcc
(4)Method to control for ON/OFF using the OVP terminal
You can reset OVP to lower the OVP terminal voltage lower
than V
THOVPL
.
So you can control for ON/OFF using this nature.
The application is shown in Fig.24.
The circuit turns off by SW OFF and turns on by SW ON in this
application.
Of course you can make use of the transistor or photo-transistor
instead of SW.
FIG.24 Method to control for ON/OFF using the
OVP terminal
SW
ON/OFF
M51996A
REG
5.1k
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M51996FP | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| M51997 | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| M51997FP | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| M51997P | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| M52001SP | SYNC SIGNAL PROCESSOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M51996AP(#TF0J) | 制造商:Renesas Electronics Corporation 功能描述: |
| M51996FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:M51996P |
| M51996P | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:M51996P |
| M51997 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SWITCHING REGULATOR CONTROL |
| M51997FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SWITCHING REGULATOR CONTROL |
發(fā)布緊急采購，3分鐘左右您將得到回復。