Technical Specification
Half
48V 1.2V
60A
out
in
Brick
PQ60012HTA60 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
100ms transient
Isolation Voltage (input to output)
Operating Temperature
V
Basic insulation level, Pollution degree 2
-40
-55
-2
°C
°C
V
Storage Temperature
Voltage at ON/OFF input pin
Voltage at Clock Sync 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
-15
18
V
applies to Full Feature option only
100% Load, 35 Vin
35
48
75
V
31.5
29.5
2.2
33.3
31.0
2.3
34.4
32.4
2.4
2.7
70
V
V
V
A
No-Load Input Current
50
2
mA
mA
Disabled Input Current
5
2
Inrush Current Transient Rating
Response to Input Transient
Input Reflected-Ripple Current
Recommended Input Fuse
Input Filter Component Values (C1\L\C2)
Recommended External Input Capacitance
OUTPUT CHARACTERISTICS
Output Voltage Set Point
0.03
150
5
A s
mV
mA
A
1000V/ms input transient
RMS thru 10µH inductor; Figs. 13 & 15
fast blow external fuse recommended
20
1.6\4\3.3
47
µF\µH\µF internal values, see Figure E
33
µF
V
see Figure 13
1.188
1.200
1.212
Output Voltage Regulation
Over Line
+
+
+
0.2 \ 2
0.2 \ 2
0.3 \ 4
0.3 \ 4
%\mV
%\mV
mV
+
Over Load
+
+
16
Over Temperature
5
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
1.164
1.236
V
over sample, line, load, temperature & life
20MHz bandwidth; Fig. 13 & 16
Full Load, see Figures 13 & 16
50
10
80
20
60
75
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
Current Share Accuracy (2 units paralleled)
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
65
70
A
Output Voltage 10% Low; Fig. 17
0.58
V
+
+
2
5
%
% of rated output current
0.5
0
1.3
2.5
A
Max negative current drawn from output
Max negative current drawn from output
1.2Vout at 60A Resistive Load
10
50
mA
µF
>50,000
80
dB
120 Hz; Fig. 20
50
50
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
400
Turn-On Transient
Turn-On Time
20
200
0
30
ms
ms
%
Full load, Vout=90% nom.; Figs. 9 & 10
-40°C to +125°C; Figure A
Start-Up Inhibit Time
180
215
Output Voltage Overshoot
EFFICIENCY
10,000 µF load capacitance, Iout = 0A
100% Load
84
88
%
%
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
3300
pF
Product # PQ60012HTA60
Phone 1-888-567-9596
Doc.# 005-2HT621F Rev. B
11/21/02
Page 3