STEVAL-ISA025V1 STMicroelectronics, STEVAL-ISA025V1 Datasheet - Page 36
STEVAL-ISA025V1
Manufacturer Part Number
STEVAL-ISA025V1
Description
EVAL BOARD 30A 400KHZ L6730
Manufacturer
STMicroelectronics
Type
DC/DC Switching Converters, Regulators & Controllersr
Specifications of STEVAL-ISA025V1
Design Resources
STEVAL-ISA025V1 Gerber Files STEVAL-ISA025V1 Schematic STEVAL-ISA025V1 Bill of Materials
Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
3.3V
Current - Output
30A
Voltage - Input
4.5 ~ 14V
Regulator Topology
Buck
Frequency - Switching
400kHz
Board Type
Fully Populated
Utilized Ic / Part
L6730
Input Voltage
4.5 V to 14 V
Output Voltage
3.3 V
Product
Power Management Modules
Silicon Manufacturer
ST Micro
Silicon Core Number
L6730
Kit Application Type
Power Management - Voltage Regulator
Rohs Compliant
No
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
L6730
Other names
497-5868
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STEVAL-ISA025V1
Manufacturer:
STMicroelectronics
Quantity:
1
Application details
36/52
0 dB axis with -20 dB/decade slope and a phase margin greater than 45°. To locate poles
and zeroes of the compensation networks, the following suggestions may be used:
●
●
●
Figure 30. Asymptotic bode plot of converter's open loop gain
Modulator singularity frequencies:
Compensation network singularity frequencies:
Compensation network design:
–
–
–
–
–
–
Put the gain R
Place ω
Place ω
Place ω
Place ω
Check the loop gain considering the error amplifier open loop gain.
ω
Z1
Z2
P1
P2
ω
P
1
ω
LC
before the output filter resonance ω
at the output filter resonance ω
at the output capacitor ESR zero ω
at one half of the switching frequency;
=
Z
1
R
=
=
5
5
/R
⋅
⎛
⎜ ⎜
⎝
R
L
3
C
5
C
⋅
1
⋅
in order to obtain the desired converter bandwidth
1
18
Cout
1
18
C
ϖ
Doc ID 11938 Rev 3
+
19
⋅
C
C
C
=
19
19
R
R
⎞
⎟ ⎟
⎠
(17)
5
3
(13)
⋅
Δ
(15)
Vin
Vosc
ω
Z
⋅
ω
ϖ
2
ω
ESR
LC
=
P
2
C
=
LC
=
20
(18)
ESR
;
R
⋅
(
4
ESR
LC
R
1
⋅
1
C
3
1
⋅
;
+
Cout
20
;
R
4
)
(16)
(14)
(18)
L6730 - L6730B