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IS32PM3510 component calculator Version
Design Specs
TOPOLOGY SELECT::Select
VoutV
Vcc(minimum)V
Vcc(typical) V
Vcc(maximum) V
Frequency kHz
TopologyBOOST::Step 1 - Application Requirements
BOOST:: Step 2 - Operating Frequency
BOOST:: Step 3 - Inductor Value
BOOST:: Step 4 - Parameters Based on Actual Chosen Inductor
BOOST:: Step 5 -Sense Resistor(RCS)
BOOST:: Step 6 -Output Capacitors(COUT)
BOOST:: Step 7 -Input Capacitors(CIN)
BOOST:: Step 8 -Loop Compensation
BOOST:: Step 9 -MOSFET and Diode Select
BUCK::Step 1 - Application Requirements
BUCK:: Step 2 - Operating Frequency
BUCK:: Step 3 - Inductor Value
BUCK:: Step 4 - Parameters Based on Actual Chosen Inductor
BUCK:: Step 5 -Sense Resistor(RCS)
BUCK:: Step 6 -Input Current Sense Resistor(RINSEN)
BUCK:: Step 7 -Input Capacitors(CIN)
BUCK:: Step 8 -Output Capacitors(COUT)
BUCK:: Step 9 -Loop Compensation
BUCK:: Step 10 -MOSFET and Diode Select
BUCKBOOST::Step 1 - Application Requirements
BUCKBOOST:: Step 2 - Operating Frequency
BUCKBOOST:: Step 3 - Inductor Value
BUCKBOOST:: Step 4 - Parameters Based on Actual Chosen Inductor
BUCKBOOST:: Step 5 -Sense Resistor(RCS)
BUCKBOOST:: Step 6 -Input Current Sense Resistor(RINSEN)
BUCKBOOST:: Step 7 -Input Capacitors(CIN)
BUCKBOOST:: Step 8 -Output Capacitors(COUT)
BUCKBOOST:: Step 9 -Loop Compensation
BUCKBOOST:: Step 10 -MOSFET and Diode Select
RecalculateDesign Results
TOPOLOGY SELECT::Select
12V
Vout
9V
Vcc(minimum)
12V
Vcc(typical)
16V
Vcc(maximum)
400kHz
Frequency
BUCKBOOST
Topology
BOOST::Step 1 - Application Requirements
36V
Vout
9V
Vcc(minimum)
12V
Vcc(typical)
16V
Vcc(maximum)
0.5A
Iout
0.3
Ratio
0.9
Effciency
179.8kΩ
RFB1
6.2kΩ
RFB2
0.67
D_typical
0.56
D_min
0.75
D_max
BOOST:: Step 2 - Operating Frequency
400kHz
Fsw
125.37kΩ
RFSET_calculated
120kΩ
RFSET_chosen
416.86kHz
Fsw_calculated
BOOST:: Step 3 - Inductor Value
24.29µH
Calculated L1
22µH
Actual L1
BOOST:: Step 4 - Parameters Based on Actual Chosen Inductor
0.98A
ΔI (Vcc=1/2*Vout)
0.74A
ΔI _min
0.97A
ΔI _max
1.11A
IL_AVG(Vcc=1/2*Vout)
2.22A
IL_AVG_min
1.25A
IL_AVG_max
2.59A
Ipk
3.5A
Isat
2.67A
Irms
BOOST:: Step 5 -Sense Resistor(RCS)
22.87mΩ
Rcs_max
22mΩ
Rcs_chosen
3.5A
Ipk_protection
BOOST:: Step 6 -Output Capacitors(COUT)
50mV
Ripple_Vout
17.99µF
Cout_min
40µF
Cout_chosen
BOOST:: Step 7 -Input Capacitors(CIN)
30mV
Ripple_Vcc
9.81µF
Cin_min
BOOST:: Step 8 -Loop Compensation
455μS
gm
0.41S
Gcs
32.55kHz
f_RHPZ
41.69kHz
fc(1/10*fsw)
3.26kHz
fc(1/10*fRHPZ)
3.26kHz
fc_calculated
2.3kHz
fc_chosen
92.23kΩ
RCP
0.58khz
FZ1
2.99nF
CP1
75.03pF
CP2
BOOST:: Step 9 -MOSFET and Diode Select
35.98nC
Qg_max
46.8V
VDS_min
1A
ID2_AVG
46.8V
VD2REV_min
BUCK::Step 1 - Application Requirements
5V
Vout
9V
Vcc(minimum)
12V
Vcc(typical)
16V
Vcc(maximum)
3A
Iout
0.2
Ratio_min
1.5
Ratio_max
0.94
Effciency
31.67kΩ
RFB1
10kΩ
RFB2
0.42typical
D_Typical
0.31minimum
D_min
0.56maximum
D_max
BUCK:: Step 2 - Operating Frequency
400kHz
Fsw_set
125.37kΩ
RFSET_Calculated
120kΩ
RFSET_Chosen
416.86kHz
Fsw_Calculated
BUCK:: Step 3 - Inductor Value
1.83µH
L1_min
8.88µH
L1_max
5.36µH
L1_recommend
6.8µH
L1_chosen
BUCK:: Step 4 - Parameters Based on Actual Chosen Inductor
1.03A
ΔI _Typical
0.78A
ΔI_min
1.21A
ΔI_max
3.61A
Ipk_max
2.61A
Ivalley_max
4.69A
Isat
3.6A
Irms
BUCK:: Step 5 -Sense Resistor(RCS)
19.76mΩ
Rcs_max
18mΩ
Rcs_chosen
3.72A
Ivalley_protcetion
BUCK:: Step 6 -Input Current Sense Resistor(RINSEN)
14.79mΩ
RINSEN_max
14mΩ
RINSEN_chosen
5.71A
input over current protection
BUCK:: Step 7 -Input Capacitors(CIN)
50mV
Ripple_VIN
37.81µF
Cin_min
BUCK:: Step 8 -Output Capacitors(COUT)
30mV
Ripple_Vout
12.12µF
Cout_min
22µF
Cout_chosen
BUCK:: Step 9 -Loop Compensation
455μS
gm
1.85S
Gcs
20.84kHz
fc(1/10*fsw)
16.6kHz
fc_chosen
11.35kΩ
RCP
4.17khz
FZ1
3.36nF
CP1
84.49pF
CP2
BUCK:: Step 10 -MOSFET and Diode Select
35.98nC
Qg_max
20.8V
VDS_min
4.1A
ID_AVG
20.8V
VD1REV_min
BUCKBOOST::Step 1 - Application Requirements
10.6V
Vout
9V
Vcc_min
12V
Vcc_Typical
16V
Vcc_max
2.2A
Iout
0.3
Ratio_min
1.5
Ratio_max
0.9
Effciency
33.68kΩ
RFB1
4.3kΩ
RFB2
0.15V
D_min
0.66V
D_max
BUCKBOOST:: Step 2 - Operating Frequency
400kHz
Fsw_set
125.37kΩ
RFSET_calculated
124kΩ
RFSET_chosen
404.16kHz
Fsw_calculated
BUCKBOOST:: Step 3 - Inductor Value
2.68µH
L1_min
13.41µH
L1_max
8.05µH
L1_calculated
10µH
L1_chosen
BUCKBOOST:: Step 4 - Parameters Based on Actual Chosen Inductor
0.34A
ΔI _min
0.89A
ΔI _max
3.05A
Ipk_max
1.9A
Ivalley_max
2.88A
IAVG_min
2.2A
IAVG_max
5.13A
Isat
3.45A
Irms
BUCKBOOST:: Step 5 -Sense Resistor(RCS)
19.44mΩ
Rcs_max
15mΩ
Rcs_chosen
5.13A
Ipk_protection
4.47A
Ivalley_protection
BUCKBOOST:: Step 6 -Input Current Sense Resistor(RINSEN)
17.5mΩ
RINSEN_max
15mΩ
RINSEN_chosen
5.33A
over current protection
BUCKBOOST:: Step 7 -Input Capacitors(CIN)
20mV
Ripple_input
67.62µF
Cin_min
BUCKBOOST:: Step 8 -Output Capacitors(COUT)
10mV
Ripple_Vout
82.16µF
Cout_min
80µF
Cout_chosen
BUCKBOOST:: Step 9 -Loop Compensation
455μS
gm
2.06S
Gcs
55.28kHz
f_RHPZ
40.42kHz
fc(1/10*Fsw)
5.53kHz
fc(1/10*f_RHPZ)
5.53kHz
fc_calculated
5kHz
fc_chosen
23.7kΩ
RCP
1.26khz
FZ1
5.35nF
CP1
134.28pF
CP2
BUCKBOOST:: Step 10 -MOSFET and Diode Select
37.11nC
Qg_max
20.8V
VDS_min
1.3A
ID1_AVG
4.4A
ID2_AVG
20.8V
VD1&VD2 REV_min
Schematic
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