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VIPER265KDTR Fiches technique(PDF) 16 Page - STMicroelectronics

No de pièce VIPER265KDTR
Description  1050 V high voltage converter for ultra-wide input
PDF  28 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VIPER265KDTR Fiches technique(HTML) 16 Page - STMicroelectronics

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General description
VIPER26K
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DS12978 Rev 1
In the case of isolated power supply, the internal error amplifier has to be disabled (FB pin
shorted to GND). In this case an internal resistor is connected between an internal reference
voltage and the COMP pin.
The current loop has to be closed on the COMP pin through the optocoupler in parallel with
the compensation network. The VCOMP dynamics range is between VCOMPL and VCOMPH.
When the voltage VCOMP drops below the voltage threshold VCOMPL, the converter enters
burst mode.
When the voltage VCOMP rises above the VCOMPH threshold, the peak drain current will
reach its limit, as well as the deliverable output power.
Figure 21. Feedback circuit
Figure 22. COMP pin vs. IDLIM



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