
Technical Specification
Product # PQ50180HTB10
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005486 Rev. B
04/14/10
Page 3
Input:44-52V
Output:18V
Current:10A
Part No.:PQ50180HTB10
Electrical Characteristics
PQ50180HTB10 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
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
100
V
Continuous
Operating
52
V
Continuous
Isolation Voltage
Input to Output
2000
V dc
Input to output
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
4.5
A
100% Load, 44 Vin
No-Load Input Current
90
105
mA
Disabled Input Current
2
5
mA
Inrush Current Transient Rating
0.03
A
Response to Input Transient
1.3
V
1000V/ms input transient
Input Reflected Ripple Current
5
mA
RMS thru 10μH inductor
Input Terminal Ripple Current
145
mA
RMS
Recommended Input Fuse
20
A
Input Filter Component Values (C1\L\C2)
2\4\4.1
F\H\F internal values
Recommended External Input Capacitance
47
F
Typical ESR 0.1-0.2 Ω
OUTPUT CHARACTERISTICS
Output Voltage Set Point
17.85
18.00
18.15
V
Output Voltage Regulation
Over Line
±0.05 \ 8 ±0.1 \ 15 % \ mV
Over Load
±0.1 \ 15 +0.2 \ 30 % \ mV
Over Temperature
±45
±90
mV
Total Output Voltage Range
17.72
18.29
V
Over sample, line, load, temperature & life
Output Voltage Ripple and Noise
20 MHz bandwidth
Peak-to-Peak
50
100
mV
Full load
RMS
15
30
mV
Full load
Operating Output Current Range
0
10
A
Subject to thermal derating
Output DC Current-Limit Inception
10.5
11.4
12.3
A
Output voltage 10% Low
Output DC Current-Limit Shutdown Voltage
12.5
V
Back-Drive Current Limit while Enabled
0.1
0.4
0.7
A
Negative current drawn from output
Back-Drive Current Limit while Disabled
0
10
50
mA
Negative current drawn from output
Maximum Output Capacitance Ceramic
3,000
F
Vout nominal at full load (resistive load)
EFFICIENCY
100% Load
93
%
50% Load
93
%