Technical Specification
Quarter
48V 15V
6.7A
out
in
Brick
PQ48150QGA07 ELECTRICAL CHARACTERISTICS
TA=25°C, airflow rate=300 LFM, Vin=48Vdc unless otherwise noted; full operating temperature range is -40°C to +100°C ambient
temperature with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
100
80
V
V
continuous
Operating
continuous
Operating Transient Protection
100
2000
100
125
18
V
< 10µs, 1% duty cycle
Basic level, Pollution Degree 2
Isolation Voltage (input to output)
Operating Temperature
V
-40
-55
-2
°C
°C
V
Storage Temperature
Voltage at ON/OFF input pin
INPUT CHARACTERISTICS
Operating Input Voltage Range
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
35
48
75
V
32
28.5
2.5
33
29.5
3.5
34
30.5
4.5
3.5
120
3
V
V
V
A
100% Load, 35 Vin
No-Load Input Current
80
1.6
0.01
4
mA
mA
Disabled Input Current
2
Inrush Current Transient Rating
Input Reflected-Ripple Current
Recommended Input Fuse
Input Filter Component Values (C\L)
Recommended External Input Capacitance
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Regulation
Over Line
A s
mA
A
P-P thru 10µH inductor; Figs. 13 & 15
fast blow external fuse recommended
20
2.46\4.7
47
µF\µH internal values, see Figure E
33
µF
V
see Figure 13
14.77
15.00
15.23
+
+
+
0.04 \ 6
0.04 \ 6
0.2 \ 30
0.2 \ 30
%\mV
%\mV
mV
+
Over Load
+
+
300
Over Temperature
112
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
14.47
15.54
V
over sample, line, load, temperature & life
20MHz bandwidth; Fig. 13 & 16
Full Load, see Figures 13 & 16
75
15
150
30
mV
mV
A
RMS
Full Load, see Figures 13 & 16
Operating Output Current Range
Output DC Current-Limit Inception
Output DC Current-Limit Shutdown Voltage
Back-Drive Current Limit while Enabled
Back-Drive Current Limit while Disabled
Maximum Output Capacitance
DYNAMIC CHARACTERISTICS
Input Voltage Ripple Rejection
Output Voltage During Load Current Transient
Step Change in Output Current (0.1A/µs)
Step Change in Output Current (5A/µs)
Settling Time
0
7
6.67
9
8
A
Output Voltage 10% Low; Fig. 17
9.2
0.3
10
V
0.1
0
0.8
50
A
Negative current drawn from output
Negative current drawn from output
15Vout at 6.7A Resistive Load
mA
µF
2,000
67
dB
120 Hz; Fig. 20
500
500
800
mV
mV
µs
50% to 75% to 50% Iout max; Figure 11
50% to 75% to 50% Iout max; Figure 12
to within 1% Vout nom
Turn-On Transient
Turn-On Time
4
8
200
0
12
ms
ms
%
Full load, Vout=90% nom.; Figs. 9 & 10
-40°C to +125°C; Figure F
Start-Up Inhibit Time
180
215
Output Voltage Overshoot
EFFICIENCY
10,000 µF load capacitance, Iout = 0A
100% Load
89
89
%
%
Figures 1 - 4
Figures 1 - 4
50% Load
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
Board Temperature
125
125
125
°C
°C
°C
Package rated to 150°C
UL rated max operating temp 130°C
See Figures 5 - 8 for derating curves
Transformer Temperature
ISOLATION CHARACTERISTICS
Isolation Voltage
2000
10
V
Isolation Resistance
M
Ω
Isolation Capacitance
470
pF
Product # PQ48150QGA07
Phone 1-888-567-9596
Doc.# 005-2QG415D Rev. D
8/16/02
Page 3
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