RAA457100GBM Selecting Inductor for DCDC Converter
R19AN0047EJ0100 Rev.1.00
Aug. 10, 2017
Page 2 of 4
Typical performance characteristics of DCDC converter (for reference)
Typical performance characteristics of DCDC converter are shown blow. These values are reference data, and are not guaranteed.
Evaluate the DCDC converter enough, and then select inductor.
Efficiency vs. Output current (V
BAT
=3.8V)
Output Voltage vs. Output current (V
BAT
=3.8V)
40
50
60
70
80
90
100
0.1 1 10 100
Efficiency [%]
Output Current [mA]
VLS252008ET-100M VLS252010CX-100M VLS201610CX-100M
LQH2HPN100MGR LQH2HPN100MDR LQH2MPN100MGR
40
50
60
70
80
90
100
0.1 1 10 100
Efficiency [%]
Output Current [mA]
VLS252008ET-100M VLS252010CX-100M VLS201610CX-100M
LQH2HPN100MGR LQH2HPN100MDR LQH2MPN100MGR
40
50
60
70
80
90
100
0.1 1 10 100
Efficiency [%]
Output Current [mA]
VLS252008ET-100M VLS252010CX-100M VLS201610CX-100M
LQH2HPN100MGR LQH2HPN100MDR LQH2MPN100MGR
40
50
60
70
80
90
100
0.1 1 10 100
Efficiency [%]
Output Current [mA]
VLS252008ET-100M VLS252010CX-100M VLS201610CX-100M
LQH2HPN100MGR LQH2HPN100MDR LQH2MPN100MGR
SYS=1.5V
SYS=1.8V
SYS=3.0V
1.10
1.15
1.20
1.25
1.30
0.1 1 10 100
SYS Voltage [V]
Output Current [mA]
VLS252008ET-100M VLS252010CX-100M VLS201610CX-100M
LQH2HPN100MGR LQH2HPN100MDR LQH2MPN100MGR
1.40
1.45
1.50
1.55
1.60
0.1 1 10 100
SYS Voltage [V]
Output Current [mA]
VLS252008ET-100M VLS252010CX-100M VLS201610CX-100M
LQH2HPN100MGR LQH2HPN100MDR LQH2MPN100MGR
1.70
1.75
1.80
1.85
1.90
0.1 1 10 100
SYS Voltage [V]
Output Current [mA]
VLS252008ET-100M VLS252010CX-100M VLS201610CX-100M
LQH2HPN100MGR LQH2HPN100MDR LQH2MPN100MGR
2.90
2.95
3.00
3.05
3.10
0.1 1 10 100
SYS Voltage [V]
Output Current [mA]
VLS252008ET-100M VLS252010CX-100M VLS201610CX-100M
LQH2HPN100MGR LQH2HPN100MDR LQH2MPN100MGR