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NCP1254 - Current-Mode PWM Controller

Features

  • several key protective features: a non.
  • dissipative Over Power Protection for a constant maximum output current regardless of the input voltage, two latched over voltage protection inputs.
  • either through a dedicated pin or via the Vcc input and a dual.
  • level auto.
  • recovery/latched overl.

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Datasheet Details

Part number NCP1254
Manufacturer onsemi
File Size 378.74 KB
Description Current-Mode PWM Controller
Datasheet download datasheet NCP1254 Datasheet

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Full PDF Text Transcription

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NCP1254 Product Preview Current-Mode PWM Controller for Off-line Power Supplies featuring Peak Power Excursion The NCP1254 is a highly integrated PWM controller capable of delivering a rugged and high performance offline power supply in a TSOP−6 package. With a supply range up to 35 V, the controller hosts a jittered 65−kHz switching circuitry operated in peak current mode control. When the power on the secondary side starts to decrease, the controller automatically folds back its switching frequency down to a minimum level of 26 kHz. As the power further goes down, the part enters skip cycle while freezing the peak current setpoint.
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