MQFL-28-7R5S
Output:
7.5 V
Current:
16 A
Technical Specification
100
95
90
100
95
90
Efficiency (%)
Efficiency (%)
85
80
75
70
65
60
0
4
8
12
16
16 Vin
28 Vin
40 Vin
85
80
75
70
65
60
-55ºC
25ºC
125ºC
16 Vin
28 Vin
40 Vin
Load Current (A)
Case Temperature (ºC)
Figure 1:
Efficiency at nominal output voltage vs. load current for min-
imum, nominal, and maximum input voltage at T
CASE
=25
°
C.
Figure 2:
Efficiency at nominal output voltage and 60% rated power vs.
case temperature for input voltage of 16V, 28V, and 40V.
20
18
16
20
18
16
Power Dissipation (W)
14
12
10
8
6
4
2
0
0
4
8
12
16
16 Vin
28 Vin
40 Vin
Power Dissipation (W)
14
12
10
8
6
4
2
0
-55ºC
25ºC
125ºC
16 Vin
28 Vin
40 Vin
Load Current (A)
Case Temperature (ºC)
Figure 3:
Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at T
CASE
=25
°
C.
Figure 4:
Power dissipation at nominal output voltage and 60% rated
power vs. case temperature for input voltage of 16V, 28V, and 40V.
22
20
18
16
14
165
150
135
120
105
90
75
60
8
7
6
Output Voltage (V)
12
10
8
6
4
2
0
25
45
65
85
105
125
Pout (W)
5
4
3
2
Iout (A)
T
j
max
= 105ºC
T
j
max
= 125ºC
T
j
max
= 145ºC
135
45
30
15
0
145
1
0
0
28 Vin
5
10
15
20
25
Case Temperature (ºC)
Load Current (A)
Figure 5:
Output Current / Output Power derating curve as a function
of T
CASE
and the Maximum desired power MOSFET junction tempera-
ture at Vin = 28V (see Note 14).
Product # MQFL-28-7R5S
Phone 1-888-567-9596
Figure 6:
Output voltage vs. load current showing typical current limit
curves.
Doc.# 005-2MQ075S Rev. A
8/6/07
Page 5
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