Datasheet

L5987 Application information
Doc ID 14972 Rev 3 27/41
Equation 29
For example with V
OUT
= 3.3 V, V
IN
= 12 V, I
O
= 3 A, L = 10 μH, C
OUT
= 330 μF,
ESR = 35 mΩ, the type II compensation network is:
In Figure 16 is shown the module and phase of the open loop gain. The bandwidth is about
32 kHz and the phase margin is 45°.
C
5
C
4
2π R
4
C
4
4BW⋅ 1–⋅⋅⋅
------------------------------------------------------------- -=
R
1
1.5kΩ= R
2
330Ω= R
4
10kΩ= C
4
47nF= C
5
82pF=,,,,