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MS1003SH 데이터시트(PDF) 14 Page - Shindengen Electric Mfg.Co.Ltd

부품명 MS1003SH
상세설명  Control IC
PDF  41 Pages
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제조업체  SHINDENGEN [Shindengen Electric Mfg.Co.Ltd]
홈페이지  http://www.shindengen.co.jp/
Logo SHINDENGEN - Shindengen Electric Mfg.Co.Ltd

MS1003SH 데이터시트(HTML) 14 Page - Shindengen Electric Mfg.Co.Ltd

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MS1003SH･MS1004SH
Application Note Ver.2.2
SHINDENGEN ELECTRIC MFG. CO. , LTD
14/41
3) Switching from super standby mode to normal mode
The IC exits super standby mode by clamping the Z/C pin voltage at 3 V or less using an external signal.
3.4 Protection functions
3.4.1 Vcc overvoltage protection latch
The MS1003SH and MS1004SH incorporate an overvoltage protection circuit (OVP).
The IC is latched when the control coil voltage exceeds the VOVP to provide indirect overvoltage
protection for the secondary output. The IC is unlatched by momentarily dropping the VCC pin voltage to
the VUL (unlatch voltage) or below.
Vin
Nc巻線
ﾊﾞｯｸｱｯﾌﾟ
Vcc
VccUVLO
起動
UVLO
Vcc(start)=12V
Vcc(stop on stby)
or Vcc(stop on normal)
VUL=3.2V
ﾗｯﾁ
VUL信号
あり
なし
ラッチ停止
ラッチ解除
出力検出ｵｰﾌﾟﾝ等
わざとVCC電圧上昇
なし
あり
ラッチ解除
VOVP=26V
3.4.2 Overcurrent protection
A current detection resistor is connected between the
OCL pin and the GND pin to detect the source current
of the main switching device. The main switching
device current is limited by pulse-by-pulse operation
using a threshold voltage that varies with ON range.
8
3
Vin端子
GND端子
NP
5
4
OCL端子
電流検出
抵抗
Latched
ON
OFF
Nc coil
backup
ON
OFF
Startup
UVLO
Deliberately increasing
Vcc voltage (e.g., output
detection open)
Latch
Unlatched
VUL signal
Unlatched
GND pin
OCL pin
Vin pin
Current
detection
resistor



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