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Central SUPPORT
Central SUPPORT
Senior
June 4, 2019
Solved

How to disable L6599 output

  • June 4, 2019
  • 1 reply
  • 1214 views

I am using an L6599A high voltage resonant controller in my AC/DC power supply, and I want to add a shutdown feature. I have pulled the STBY pin to GND of the chip, however the output continues to produce pulses.

Latching shutdown (via DIS pin) is not what I want, so is there any other way to stop output pulses without removing AC power from my system?

 

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Best answer by Central SUPPORT

There are two ways how to achieve the desired function:

1.    The VCC pin can be pulled below VCC_OFF threshold (7.45V). See Table 5 “Electrical Characteristics�? of datasheet for more information.

2.    The LINE pin can be pulled below 1.24V. See chapter 7.6 “Line sensing function�? of datasheet for more information.

1 reply

Central SUPPORT
Central SUPPORTAuthorBest answer
Senior
June 4, 2019

There are two ways how to achieve the desired function:

1.    The VCC pin can be pulled below VCC_OFF threshold (7.45V). See Table 5 “Electrical Characteristics�? of datasheet for more information.

2.    The LINE pin can be pulled below 1.24V. See chapter 7.6 “Line sensing function�? of datasheet for more information.

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