MIC28510EV Datasheet, PDF (7/14 Pages) Micrel Semiconductor – 75V/4A Hyper Speed Control™ Synchronous DC/DC Buck Regulator

Micrel, Inc.
MIC28510 4A Evaluation Board
MIC28510 12V/4A Output Evaluation Board Typical Characteristics
100
95
90
85
80
75
70
65
60
55
50
0
Efficiency
vs. Output Current
18V
24V
30V
48V
75V
V_OUT = 12V
f_SW = 250kHz
L = 27μH
1
2
3
4
5
6
OUTPUT CURRENT (A)
Thermal Derating
4
V_OUT = 12V
f_SW=250kHz
3
L=27μH
24V_IN
T_{j_MAX} =125°C
2
18V_IN
48V_IN
1
75V_IN
0
25
40
55
70
85
100 115
Maximum Ambient Temperature (°C)
Die Temperature* : The temperature measurement was taken at the hottest point on the MIC28510 case mounted on a 5 square inch 4 layer, 0.62”,
FR-4 PCB with 2oz. finish copper weight per layer, see Thermal Measurement section. Actual results will depend upon the size of the PCB, ambient
temperature and proximity to other heat emitting components.
March 2012
7
M9999-030712
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