SD4844P سیلان چین - کیفیت بالا

نقد و بررسی اجمالی

ایسی PWM کنترلر ساخت انواع منابغ تغذیه با ماسفت قدرتمند ولتاژ بالا CURRENT MODE PWM CONTROLLER WITH BUILT-IN HIGH VOLTAGE MOSFET

استفاده در انواع صنایع از جمله نوسان ساز(PWM)انواع بردهای درایو دستگاه های جوش و برش و اینورتری
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DESCRIPTION
SD4840/4841/4842/4843/4844 is a current mode PWM controller with low standby power and low start current for power switch. In standby mode, the circuit enters burst mode to reduce the standby power dissipation.
The switch frequency is 67KHz with ±2.5 KHz jitter frequency for low EMI.
The stress on transformer during power on is reduced by the built-in 15ms soft start circuit to avoid the saturation of transformer.
SD4840/4841/4842/4843/4844 includes under voltage lock-out, over voltage protection, leading edge blanking, over current protection and the temperature protection. The circuit will restart automatically until the system is normal after the protection is active.
FEATURES
ORDERING INFORMATION
Part No.
Package
Marking
SD4840P67K65
SD4840P67K65
SD4841P67K65
SD4841P67K65
SD4842P67K65
SD4842P67K65
SD4843P67K65
SD4843P67K65
SD4844P67K65
DIP-8-300-2.54
SD4844P67K65
Note: P denotes it is available in DIP8 package, 67k denotes 67KHz, and 65 denotes withstand voltage is 650V.
* Lower start-up current (Typ.6μA)
* Frequency jitter for low EMI
* Overcurrent protection
* Overvoltage protection
* Undervoltage lockout
* Built-in temperature protection
* Built-in high voltage MOSFET
* Auto restart mode
* Built-in soft start
* Burst mode operation
* Cycle by cycle current limit