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NCP1216

Current Mode PWM Controllers
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Manufacturer
ON Semiconductor
Description

 

the  NCP1216 represents an enhanced version of NCP1200 based controllers. Due to its high drive capability, NCP1216 drives large gate−charge MOSFETs, which together with internal ramp compensation and built−in frequency jittering, ease the design of modern AC−DC adapters.With an internal structure operating at different fixed frequencies,the controller supplies itself from the high−voltage rail, avoiding the need of an auxiliary winding. This feature naturally eases the designer task in some particular applications, e.g. battery chargers or TV sets.Current−mode control also provides an excellent input audio susceptibility and inherent pulse−by−pulse control. Internal ramp compensation easily prevents sub−harmonic oscillations from taking place in continuous conduction mode designs.
 
 
NCP1216 Features
 
• No Auxiliary Winding Operation
• Current−Mode Control with Adjustable Skip−Cycle Capability
• Internal Ramp Compensation
• Limited Duty Cycle to 50% (NCP1216A Only)
• Internal 1.0 ms Soft−Start (NCP1216A Only)
• Built−In Frequency Jittering for Better EMI Signature
• Auto−Recovery Internal Output Short−Circuit Protection
• Extremely Low No−Load Standby Power
• 500 mA Peak Current Capability
• Fixed Frequency Versions at 65 kHz, 100 kHz, 133 kHz
• Internal Temperature Shutdown
• Direct Optocoupler Connection
• SPICE Models Available for TRANsient and AC Analysis
• Pin−to−Pin Compatible with NCP1200 Series
• These are Pb−Free and Halide−Free Devices
 
NCP1216 Applications
 
• High Power AC−DC Converters for TVs, Set−Top Boxes, etc.
• Offline Adapters for Notebooks
• Telecom DC−DC Converters
• All Power Supplies
Parametrics
Switching Frequency71.5 kHz
Rise Time60 ns
Fall Time20 ns
Operating Supply Voltage16 V
Maximum Operating Temperature+ 150 C
Mounting StyleSMD/SMT
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