L6598_04 STMICROELECTRONICS [STMicroelectronics], L6598_04 Datasheet - Page 9

• Manufacturer Part Number: L6598_04
• Description: HIGH VOLTAGE RESONANT CONTROLLER
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Figure 9. Typ. fmin vs. Rfmin @ Cf = 470pF
Figure 10. Typ. (fstart-fmin) vs. Rfstar @
Figure 11. Typ. (fstart-fmin) vs. Rfstar @
(KHz)
(KHz)
100
80
60
40
20
(KHz)
f
100
f
min
80
60
40
20
80
60
40
20
f
20
20
20
Cf = 470pF
Cf = 470pF
40
40
40
60
60
60
Rfmin=33K
Rfmin=50K
80
80
80
100 R
100 R
100 R
D98IN891
D98IN893
D98IN892
fstart
fmin
fstart
(K )
(K )
(K )
Figure 12. Typ. (fstart-fmin) vs. Rfstar @
Figure 13. fmin @ different Rf vs Cf
(KHz)
fmin
(KHz)
100
80
60
40
20
400
200
f
0
0
20
Cf = 470pF
Rf=19.9Kohm - calc.
40
Rf=19.9Kohm - meas.
200
Rf=90Kohm - meas.
60
Rfmin=100K
80
Rf=90Kohm - calc.
400
100 R
D98IN894
fstart
Cf (pF)
L6598
(K )
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