Hi..... Can anyone help to calculate the dead band in sg3525 ic. In need 300ns dead band.
Thread Starter sudharshan.panduranga Joined Apr 10, 2008 65 Oct 28, 2009 #1 Hi..... Can anyone help to calculate the dead band in sg3525 ic. In need 300ns dead band.
SgtWookie Joined Jul 17, 2007 22,230 Oct 29, 2009 #2 Did you look in the datasheet? Discharge time is a function of Rd and Ct. There is a plot in most datasheets for this IC. Read this Application Note: http://freedatasheets.com/downloads... Supply And Power Management SG3525 AN250.pdf
Did you look in the datasheet? Discharge time is a function of Rd and Ct. There is a plot in most datasheets for this IC. Read this Application Note: http://freedatasheets.com/downloads... Supply And Power Management SG3525 AN250.pdf
Thread Starter sudharshan.panduranga Joined Apr 10, 2008 65 Oct 29, 2009 #3 is discharge time equivalent to dead band between two PWM pulses?? is this formula correct? Tdescharge=3RDCt
is discharge time equivalent to dead band between two PWM pulses?? is this formula correct? Tdescharge=3RDCt
SgtWookie Joined Jul 17, 2007 22,230 Oct 29, 2009 #4 It doesn't seem to quite work out as 3RdCt. Even if Rd=0 Ohms and Ct=1nF, discharge time is still 500nS. As long as Ct is discharging, the clock output is high, blanking the outputs. See page 7 of the Applications Note I linked to, above, under Oscillator.
It doesn't seem to quite work out as 3RdCt. Even if Rd=0 Ohms and Ct=1nF, discharge time is still 500nS. As long as Ct is discharging, the clock output is high, blanking the outputs. See page 7 of the Applications Note I linked to, above, under Oscillator.