Technical Specification
IQ90280HPC08 electrical Characteristics (28 Vout)
Input:
Output:
Current:
Part no.:
34 - 160 V
28 V
8.0 A
IQ90280HPC08
Ta = 25 °C, airflow rate = 300 LFM, Vin = 90 V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate
temperature with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
typ.
Max.
Units notes & Conditions
InPUt CHARACteRIStICS
Maximum Input Current
9.8
A
Vin min; trim up; in current limit
No-Load Input Current
45
60
mA
Disabled Input Current
2.5
4
mA
Response to Input Transient
0.8
V
See Figure 6
Input Terminal Ripple Current
460
mA
RMS
Recommended Input Fuse
10
A
Fast acting external fuse recommended
OUtPUt CHARACteRIStICS
Output Voltage Set Point
27.72
28
28.28
V
Output Voltage Regulation
Over Line
±0.1
±0.3
%
Over Load
±0.1
±0.3
%
Over Temperature
-420
420
mV
Total Output Voltage Range
27.30
28.70
V
Over sample, line, load, temperature & life
Output Voltage Ripple and Noise
20 MHz bandwidth; see Note 1
Peak-to-Peak
0
140
280
mV
Full load
RMS
25
50
mV
Full load
A
Operating Output Current Range
0
8
Subject to thermal derating
Output DC Current-Limit Inception
8.8
9.6
10.4
A
Output voltage 10% Low
Output DC Current-Limit Shutdown Voltage
16
V
Back-Drive Current Limit while Enabled
0.15
A
Negative current drawn from output
Back-Drive Current Limit while Disabled
3
mA
Negative current drawn from output
Maximum Output Capacitance
250
µF
Vout nominal at full load (resistive load)
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
1400
mV
50% to 75% to 50% Iout max
Settling Time
80
µs
To within 1% Vout nom
Output Voltage Trim Range
-20
10
%
Across Pins 8&4; Common Figures 3-5
Output Voltage Remote Sense Range
10
%
Across Pins 8&4
Output Over-Voltage Protection
32.7
34.2
35.6
V
Over full temp range
eFFICIenCY
100% Load
89
%
See Figure 1 for efficiency curve
50% Load
91
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1 µF ceramic capacitor. For applications requiring reduced output voltage ripple and noise, consult SynQor
applications support (e-mail: support@synqor.com)
Product # IQ90xxxHPCxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005060 Rev. B
01/29/09
Page 18
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