Datasheet Texas Instruments UCC38501DWTR — Datenblatt

Hersteller	Texas Instruments
Serie	UCC38501
Artikelnummer	UCC38501DWTR

Datenblätter

Anwendungshinweise

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  Bootstrap Circuit for Green Mode Applications
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  A New Synchronization Circuit for Power Converters (Rev. A)
  PDF, 209 Kb, Revision: A, Datei veröffentlicht: Apr 21, 2010
  The synchronization of multiple PWM and PFC controllers is desirable for many reasons. The most common reason is that it keeps all the noise at one particular frequency and makes it easier to filter. The circuit described changes the slope of the ramp to lock the converter’s switching frequency to an applied signal by a phase locked loop turning it into a voltage controlled oscillator. Furthermore
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  Startup Current transient of the Leading Edge Triggered PFC Controllers
  PDF, 43 Kb, Datei veröffentlicht: Jun 30, 2004
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  Avoiding Audible Noise at Light Loads When Using Leading Edge Triggered PFC Con (Rev. C)
  PDF, 57 Kb, Revision: C, Datei veröffentlicht: Apr 13, 2011
  This application note applies to the TI average current mode, leading edge modulation PFC controllers. See Applicable Device Table for part numbers.
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  DN-66 UC3854A/B and UC3855A/B Provide Power Limiting with Sinusoidal Input (Rev. A)
  PDF, 80 Kb, Revision: A, Datei veröffentlicht: Nov 6, 2001
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  Accurate PWM Duty Cycle Clamp
  PDF, 58 Kb, Datei veröffentlicht: Jan 25, 2002
  Power supply applications using current sense transformers require a duty cycle clamp on the pulse width modulator (PWM) to ensure transformer reset. Not all PWMs come with a duty cycle clamp presenting a problem for the power supply designer. This application note shows how to implement a duty cycle clamp by using a simple delay circuit.

Modellreihe

Herstellerklassifikation

• Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > Power Factor Correction