STEVAL-ISA052V1 STMicroelectronics, STEVAL-ISA052V1 Datasheet - Page 27

• Manufacturer Part Number: STEVAL-ISA052V1
• Description: KIT EVAL PM6675S HE CTLR 2A REG
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ISA052V1

• Main Purpose: DC/DC, Step Down with LDO
• Outputs And Type: 2, Non-Isolated
• Voltage - Output: 1.5V, 0.6 ~ 3.3V
• Current - Output: 10A, 2A
• Voltage - Input: 4.5 ~ 28 V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: PM6675
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-8426

PM6675S
Equation 13
Moreover, the C
Equation 14
where R
the Virtual-ESR Network (R
determines the minimum integrator capacitor value C
Equation 15
The capacitor of the Virtual-ESR Network, C, is chosen as follow
Equation 16
and R is calculated to provide the desired triangular ripple voltage:
Equation 17
Finally the R1 resistor is calculated according to
Equation 18
TOT
is the sum of the ESR of the output capacitor and the equivalent ESR given by
INT
capacitor must meet the following condition:
VESR
C
f
SW
). The k parameter must be greater than unity (k > 3) and
INT
R
TOT
>
R
>
k
1
R
2
⋅
= ESR + R
=
C
f
⋅ π
Z
=
R
R
>
=
⎛
⎜
⎝
R
⋅
f
5
−
g
⎛
⎜ ⎜
⎝
SW
2
VESR
k
m
⋅
⋅ π
⋅ π
⋅ π
C
L
−
INT
f
C
Equation 18
1
Z
f
1
Z
⋅
f
out
VESR
Z
⋅
C
⋅
k
C
⎞
⎟
⎠
C
INT
⋅
⋅
⎞
⎟ ⎟
⎠
R
Vout
TOT
Vr
:
:
Device description
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