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how can i choose the slope rate.

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huangjw

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in current mode switch power supply,i use the method of positive slope compensation, and the slope rate is same as negative slope compensation? if not,
how can i choose the slope rate.
thank you.
 

If do you refeer to the rising and falling edge of a swiching device used in a switching power supply, the rising and falling edges are not equaly.
The slope is adjusted on regulators when efficiency could bepartially lost in the favour of small EMI and noise generation. Linear Technology has a family of variable slope rate switching drivers (like LT1534). Take a look on VSLEWR and VSLEWF from LT1534 datasheet.
 

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