Микросхема MC44603AP

Микросхема MC44603AP

MC44603A (Контроллер по принципу ШИМ (широтно-импульсной модуляции))

Enhanced Mixed Frequency Mode GreenLineTM PWM Controller
Также в этом файле: MC44603AP

The MC44603A is an enhanced high performance controller that is
specifically designed for off–line and dc–to–dc converter applications. This
device has the unique ability of automatically changing operating modes if
the converter output is overloaded, unloaded, or shorted, offering the
designer additional protection for increased system reliability. The
MC44603A has several distinguishing features when compared to
conventional SMPS controllers. These features consist of a foldback facility
for overload protection, a standby mode when the converter output is slightly
loaded, a demagnetization detection for reduced switching stresses on
transistor and diodes, and a high current totem pole output ideally suited for
driving a power MOSFET. It can also be used for driving a bipolar transistor
in low power converters (< 150 W). It is optimized to operate in
discontinuous mode but can also operate in continuous mode. Its advanced
design allows use in current mode or voltage mode control applications.
Current or Voltage Mode Controller
•
Operation up to 250 kHz Output Switching Frequency
•
Inherent Feed Forward Compensation
•
Latching PWM for Cycle–by–Cycle Current Limiting
•
Oscillator with Precise Frequency Control
High Flexibility
•
Externally Programmable Reference Current
•
Secondary or Primary Sensing
•
Synchronization Facility
•
High Current Totem Pole Output
•
Undervoltage Lockout with Hysteresis
Safety/Protection Features
•
Overvoltage Protection Against Open Current and Open Voltage Loop
•
Protection Against Short Circuit on Oscillator Pin
•
Fully Programmable Foldback
•
Soft–Start Feature
•
Accurate Maximum Duty Cycle Setting
•
Demagnetization (Zero Current Detection) Protection
•
Internally Trimmed Reference
•
Enhanced Output Drive
GreenLine Controller: Low Power Consumption in Standby Mode
•
Low Startup and Operating Current
•
Fully Programmable Standby Mode
•
Controlled Frequency Reduction in Standby Mode
•
Low dV/dT for Low EMI Radiation

Написать отзыв

Зарегистрируйся, оставляй отзывы о товаре, зарабатывай бонусы!

Ваше Имя:


Ваш отзыв: Внимание: HTML не поддерживается! Используйте обычный текст.

Оценка: Плохо           Хорошо