STEVAL-ISA052V2 STMicroelectronics, STEVAL-ISA052V2 Datasheet - Page 23

• Manufacturer Part Number: STEVAL-ISA052V2
• Description: BOARD EVAL BASED ON PM6675A
• Manufacturer: STMicroelectronics
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of STEVAL-ISA052V2

• Design Resources: STEVAL-ISA052V2 Gerber Files STEVAL-ISA052V2 Schematic STEVAL-ISA052V2 Bill of Material
• Main Purpose: DC/DC, Step Down with LDO
• Outputs And Type: 2, Non-Isolated
• Voltage - Output: 1.5V, 0.6 ~ 3.3V
• Voltage - Input: 4.5 ~ 36 V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: PM6675AS
• Input Voltage: 4.5 V to 36 V
• Output Voltage: 1.5 V
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed
• For Use With/related Products: PM6675AS
• Other names: 497-8413

PM6675AS
and
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 can be selected according to expression 18:
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
>
R
TOT
>
k
1
R
2
⋅
=
⋅ π
f
C
Z
=
=
R
R
>
=
⎛
⎜
⎝
R
ESR
⋅
f
−
5
g
⎛
⎜ ⎜
⎝
SW
2
VESR
k
m
⋅ π
⋅
⋅ π
⋅ π
C
L
+
−
INT
f
C
f
1
Z
1
Z
⋅
R
f
out
Z
C
⋅
⋅
VERS
C
k
C
⎞
⎟
⎠
INT
⋅
⎞
⎟ ⎟
⎠
⋅
R
Vout
:
TOT
Vr
Device description
23/48