
Product # PQ50050HPB50
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005487 Rev. A
03/18/10
Page 3
Input:
Output:
Current:
Part No.:
PQ50050HPB50 Electrical Characteristics
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48V dc unless otherwise noted; full operating temperature range is -40 °C to +70 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max. Units Notes & Conditions
Notes & Conditions
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
100
V
Continuous
Operating
52
V
Continuous
Isolation Voltage
Input to Output
2000
V dc
Basic insulation level, Pollution degree 2
Operating Temperature
-40
100
°C
Baseplate temperature
Storage Temperature
-55
125
°C
Voltage at ON/OFF input pin
-2
18
V
INPUT CHARACTERISTICS
Operating Input Voltage Range
44
48
52
V
Input Under-Voltage Lockout
Turn-On Voltage Threshold
31.5
33.3
34.4
V
Turn-Off Voltage Threshold
29.5
31
32.4
V
Lockout Voltage Hysteresis
2.2
2.3
2.4
V
Input Over-Voltage Lockout
Turn-On Voltage Threshold
58.2
59.7
61.3
V
Turn-Off Voltage Threshold
56.6
58.1
59.2
V
Lockout Voltage Hysteresis
1.5
1.6
1.8
V
Maximum Input Current
6.0
A
100% Load, 44 Vin
No-Load Input Current
100
120
mA
Disabled Input Current
2
5
mA
Inrush Current Transient Rating
0.04
A
Response to Input Transient
350.0
mV
1000V/ms input transient
Input Reflected Ripple Current
5
mA
RMS thru 10μH inductor; Figs. 11 & 13
Input Terminal Ripple Current
200
mA
RMS: Figs. 11 & 12
Recommended Input Fuse
20
A
fast blow external fuse recommended
Input Filter Component Values (C1\L\C2)
1\3\6.4
F\H\F internal values, see Figure E
internal values, see Figure E
Recommended External Input Capacitance
47
F
Typical ESR 0.1-0.2 Ω, See Figure 11
OUTPUT CHARACTERISTICS
Output Voltage Set Point
4.95
5.00
5.05
V
Factory pre-set with Sense(+), Sense(-) open
Output Voltage Regulation
Over Line
±0.05 \ 3
±0.1 \ 5 % \ mV
Over Load
±0.1 \ 5
+0.2 \ 10 % \ mV
Over Temperature
±15
±30
mV
Total Output Voltage Range
4.85
5.15
V
Over sample, line, load, temperature & life
Output Voltage Ripple and Noise
20 MHz bandwidth; Figs. 11 & 14
Peak-to-Peak
30
60
mV
Full load, see Figures 11 & 14
RMS
5
10
mV
Full load, see Figures 11 & 14
Operating Output Current Range
0
50
A
Subject to thermal derating; Fig. 5
Output DC Current-Limit Inception
53.7
57.9
62.1
A
Output voltage 10% Low; Fig. 6
Output DC Current-Limit Shutdown Voltage
3.5
V
Back-Drive Current Limit while Enabled
1.5
2.5
3.8
A
Negative current drawn from output
Back-Drive Current Limit while Disabled
0
20
50
mA
Negative current drawn from output
Maximum Output Capacitance Ceramic
34,000
F
5Vout at 50A (Resistive Load)
EFFICIENCY
100% Load
92
%
Figures 1-4
50% Load
93
%
Figures 1-4