Datasheet

SLUU166A - December 2003 − Revised February 2004
21
UCC39002 Advanced Load-Share Controller User’s Guide, HPA027A
f
POLE
is equal to the added high frequency pole for noise roll off:
f
POLE
+ 50 kHz
C
CSA
+
1
2 p R
CSA(1)
f
POLE
C
CSA
+ 31.831 pF
C
CSA
is equal to the actual capacitor value selected for this pole:
C
CSA
+ 33 pF
The resultant actual pole frequency:
f
POLE
+
1
2 p R
CSA(1)
C
CSA
f
POLE
+ 48.229 kHz
Note that these CSA compensation components must be on both input terminals of the differential amplifier.
R
LS
is equal to the internal resistance of the LS pin, which is seen as a load to the master module and will cause
a subsequent increase in supply current and power dissipation of the master module:
R
LS
+ 100 KW
I
MASTERINCREASE(max)
+ N
ǒ
V
CSO(max)
R
LS
Ǔ
I
MASTERINCREASE(max)
+ 0.09 mA
P
MASTERINCREASE
+ V
DD
I
MASTERINCREASE(max)
P
MASTERINCREASE
+ 0.45 mW