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CS5308GDWR28 датащи(PDF) 30 Page - ON Semiconductor

номер детали CS5308GDWR28
подробное описание детали  Two?뭁hase PWM Controller with Integrated Gate Drivers for VRM 8.5
PDF  31 Pages
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CS5308GDWR28 датащи(HTML) 30 Page - ON Semiconductor

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12. Soft Start Time
To set the Soft Start time we first approximate the COMP
voltage at a duty−cycle of D = 1.745 V/5 V = 0.349:
VCOMP + VOUT @0 A ) Channel_Startup_Offset
) Int_Ramp
+ 1.745 V ) 0.40 V ) 250 mV @ 0.349
+ 2.232 V
We then choose a convenient value for RCMP1 (5.62 kW)
and solve Equation 37 for CCMP2:
CCMP2 + TSS @
ICOMP
(VCOMP * RCMP1 @ ICOMP)
+ 6.5 ms @
30 mA
(2.232 V * 5.62 kW @ 30 mA)
+ 0.0945 mFor0.1 mF
Figure 28. Timing Diagram, VTT Power Good
VTT
VTT POWER GOOD
COMP/VCC CORE
POWER GOOD
1−5 ms
50 ms
COMP Must Be < 0.27 V
Before Powering Up



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