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NCP1560
Full Featured Voltage Mode PWM Controller
NCP1560
Full Featured Voltage Mode
PWM Controller
The NCP1560 PWM controller contains all the features and
flexibility needed to implement voltage−mode control in high
performance single ended DC−DC converters. This device cost
effectively reduces system part count with the inclusion of a high
voltage startup regulator that operates over a wide input range of
21.5 V to 150 V . The NCP1560 provides two control outputs, OUT1
which controls the main PWM switch and OUT2 with adjustable
overlap delay, which can control a synchronous rectifier switch or an
active clamp/reset switch. Other distinctive features include: two
mode over current protection, line under/overvoltage lockout, fast line
feedforward, soft−start and a maximum duty cycle limit.
Features Minimum Operating Voltage of 21.5 V Internal High Voltage Startup Regulator Dual Control Outputs with Adjustable Overlap Delay Single Resistor Oscillator Frequency Setting Fast Line Feedforward Line Under/Overvoltage Lockout Dual Mode Overcurrent Protection Programmable Maximum Duty Cycle Control Maximum Duty Cycle Proportional to Line V oltage Programmable Soft−Start Precision 5.0 V Reference Pb−Free Package is Available*
Typical Applications Telecommunication Power Converters Industrial Power Converters High V oltage Power Modules +42 V Automotive Systems Control Driven Synchronous Rectifier Power Converters
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
Overlap
Delay
Vin
