MPQ4560 – 2A, 2MHz, 55V, STEP-DOWN CONVERTER
Table 1: Inductor Selection Guide
Inductance
Max DCR
(Ω)
Current Rating
(A)
Dimensions
Part Number
(µH)
L × W × H (mm3)
Wurth Electronics
7447789004
744066100
744771115
744771122
TDK
4.7
10
15
22
0.033
0.035
0.025
0.031
2.9
3.6
7.3×7.3×3.2
10×10×3.8
12×12×6
3.75
3.37
12×12×6
RLF7030T-4R7
SLF10145T-100
SLF12565T-150M4R2
SLF12565T-220M3R5
Toko
4.7
10
15
22
0.031
0.0364
0.0237
0.0316
3.4
3
7.3×6.8×3.2
10.1×10.1×4.5
12.5×12.5×6.5
12.5×12.5×6.5
4.2
3.5
FDV0630-4R7M
919AS-100M
919AS-160M
919AS-220M
4.7
10
16
22
0.049
0.0265
0.0492
0.0776
3.3
4.3
3.3
3
7.7×7×3
10.3×10.3×4.5
10.3×10.3×4.5
10.3×10.3×4.5
Output Rectifier Diode
Choose a diode whose maximum reverse voltage
rating exceeds the maximum input voltage, and
whose current rating exceeds the maximum load
current. Table 2 lists example Schottky diodes
and manufacturers.
The output rectifier diode supplies the current to
the inductor when the high-side switch is OFF.
Use a Schottky diode to reduce losses from the
diode forward voltage and recovery times.
Table 2: Diode Selection Guide
Voltage/
Current
Rating
Diodes
Manufacturer
B290-13-F
B380-13-F
90V, 2A
80V, 3A
100V, 2A
100V, 3A
Diodes Inc.
Diodes Inc.
Central Semi
Central Semi
CMSH2-100M
CMSH3-100MA
MPQ4560 Rev. 1.1
3/29/2013
www.MonolithicPower.com
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