Datasheet

Application information L7986
26/45 DocID022450 Rev 7
For example with V
OUT
= 5 V, V
IN
= 24 V, I
O
= 3 A, L = 18 µ H, C
OUT
= 330 µ F, ESR = 35 m Ω ,
the type II compensation network is:
In Figure 15 the module and phase of the open-loop gain is shown. The bandwidth is about
21 kHz and the phase margin is 45°.
Figure 15. Open-loop gain Bode diagram with electrolytic/tantalum output capacitor
R
1
1.1kΩ= R
2
150Ω= R
4
4.99kΩ= C
4
82nF= C
5
68pF=,, ,,