USQ30 Datasheet, PDF (12/15 Pages) Murata Manufacturing Co., Ltd. – Single Output USQ 30A Models

USQ Series
30A, SINGLE OUTPUT DC/DC CONVERTERS
Typical Performance Curves for 1.8VOUT Models
USQ-1.8/30-D48 Efficiency vs. Line Voltage and Load Current
90
85
80
75
VIN = 36V
70
VIN = 48V
65
VIN = 75V
60
3
6
9
12 15 18 21 24 27 30
Load Current (Amps)
Start-Up from VIN
(VIN = 48V, IOUT = 30A, COUT = 10µF tantalum || 1µF ceramic.)
20V/div
+Input (pin 3)
1V/div
1.8VOUT (pin 8)
2msec/div
Start-Up from Remote On/Off Control
(VIN = 48V, IOUT = 30A, COUT = 10µF tantalum || 1µF ceramic.)
2V/div
Remote On/Off Control (pin 2)
1V/div
1.8VOUT (pin 8)
2msec/div
USQ-1.8/30-D48: Output Current vs. Ambient Temperature
(Transverse air flow, pin 1 to pin 3; VIN = 48V, no heat sink.)
30
200 lfm
25
400 lfm
20
Low LFM
15
10
5
0
–40 –10 0
10 20 30 40 50 60 70 80 90 100
Ambient Temperature (°C)
USQ-1.8/30-D48: Output Current vs. Ambient Temperature
(Transverse air flow, pin 1 to pin 3; VIN = 48V, 1/4" heat sink.)
30
29
28
200 lfm
27
26
25
24
–40 –10 0
10 20 30 40 50 60 70 80 90 100
Ambient Temperature (°C)
USQ-1.8/30-D48: Output Current vs. Ambient Temperature
(Longitudinal air flow, pin 1 to pin 3; VIN = 48V, 1/2" heat sink.)
30
29
400 lfm
28
200 lfm
27
26
25
24
–40 –10 0
10 20 30 40 50 60 70 80 90 100
Ambient Temperature (°C)
12