MIC28303 Datasheet, PDF (7/38 Pages) Microchip Technology – 50V, 3A Power Module

MIC28303
2.0 TYPICAL PERFORMANCE CURVES
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
FIGURE 2-1:
Efficiency vs. Output
Current (MIC28303-1).
FIGURE 2-3:
(MIC28303-2).
Thermal Derating
FIGURE 2-2:
Efficiency vs. Output
Current (MIC28303-2).
TABLE 2-1: RECOMMENDED COMPONENT VALUES FOR 275KHZ SWITCHING FREQUENCY
V_OUT
V_IN
R1
R11
R3
(R_inj)
R19
R15
(Top
(Bottom
Feedback Feedback
C10
(C_inj)
C12
(C_ff)
Resistor) Resistor)
C_OUT
5V
5V
3.3V
3.3V
7V to 18V
18V to 50V
5V to 18V
18V to 50V
16.5 kΩ
39.2 kΩ
16.5 kΩ
39.2 kΩ
75 kΩ 3.57 kΩ
75 kΩ 3.57 kΩ
75 kΩ 3.57 kΩ
75 kΩ 3.57 kΩ
10 kΩ
10 kΩ
10 kΩ
10 kΩ
1.9 kΩ
1.9 kΩ
3.24 kΩ
3.24 kΩ
0.1 µF
0.1 µF
0.1 µF
0.1 µF
2.2 nF
2.2 nF
2.2 nF
2.2 nF
2 x 47 µF/6.3V
2 x 47 µF/6.3V
2 x 47 µF/6.3V
2 x 47 µF/6.3V
 2016 Microchip Technology Inc.
DS20005464A-page 7