KDK ELECTRONICS, INC.
15520 On Orbit Drive
Saratoga, California 95070
Tel: (408) 741-1347
Fax: (650) 571-5123
www.kdk.cncdsl.com
Model KD250 Power Supply Specification (PRELIMINARY 2004-08-30)
AC Input
90-264Vac
47-440Hz single phase
AC Input Current
3.3A rms (90Vac & 220W)
2.5A rms (115Vac & 220W)
1.3Arms (230Vac & 220W)
Power Factor
0.99 (115Vac & 220W)
0.95 (230Vac & 220W)
Emissions
Compliant to EN55022 Class B, FCC Class B. Certification pending.
Power Quality
Compliant to EN 61000-3-2 Class D. Certification pending.
Immunity
Compliant to EN 55024 Class B. Certification pending.
Inrush Current
15A (cold start at 25°C)
Input Protection
Internal AC fuse (dual option available).
Earth Leakage Current
Less than 1.5mA at 60Hz, 230Vac. 300
µ
A option available.
Maximum Output Power
250W
Efficiency
85% @ 250W (115Vac & 25°C)
86% @ 250W (230Vac & 25°C)
Hold-Up Time
20ms @ 250W (115Vac & 25°C)
Standby Power (+5VSB)
+5V @ 1.5A maximum. This output is present whenever AC input power is applied and is not
affected by the shutdown signal.
Isolated +12V (+12VIS)
Floating +12V/3A option available. Isolation voltage: 500V.
Ripple and Noise
+12V & +12VA outputs < 120mV P-P (20MHz BW)
+5VSB < 100mV P-P (20MHz BW)
+5V & +3.3V outputs < 50mV P-P (20MHz BW)
Overload Protection
Current foldback, self recovery.
Power Fail (PF)
During nominal operation, TTL compatible output is high (>4.0V). Output switches low (<0.2V)
when any of the +12V, +5V, or +3.3V output voltages falls below its under-voltage threshold.
Shutdown (SD)
To turn on, apply TTL low. To turn off, apply TTL high.
Operating Temperature
100% rated power from 0°C to 50°C (baseplate temperature) . Derate linearly from full power at
50°C to half power at 70°C. -40°C option available.
Storage Temperature
-65°C to 85°C ambient.
Size
(mm)
W x L x H: 103 x 200 x 30 open frame.
Weight
680g maximum.
Connectors
ATX compatible. Right angle standard. Vertical mount option available.
Safety
Compliant to ANSI/UL 60950-1, CSA 22.2-60950-1, EN 60950-1. Certification pending.
Warranty
1 year
KDK ELECTRONICS, INC.
15520 On Orbit Drive
Saratoga, California 95070
Tel: (408) 741-1347
Fax: (650) 571-5123
www.kdk.cncdsl.com
Notes:
1.
The +5V load may be adjusted to a higher output level (at the expense of the other output loads) as long as the maximum
power rating is not exceeded.
2.
Outputs other than those tabulated above are available upon request.
3.
When minimum load is not maintained, maximum load regulation range is ±20% on the +12V and +12VIS outputs and ±10%
on all other outputs.
4.
Outputs may be customized to user specified load requirements for improved load and cross regulation.
LOAD & CROSS REGULATION SPECIFICATIONS
Update Summary:
2004-05-24
KD250 datasheet release.
2004-06-28
Earth leakage current 300
µ
A option added.
2004-08-30
Cross regulation and mechanical specifications updated.
This power supply is manufactured under United States patent right of KDK Electronics, Inc.
Output Power vs. Efficiency
75%
77%
79%
81%
83%
85%
87%
89%
50
75
100
125
150
175
200
225
250
Output Power (W)
E
ff
ici
e
n
cy
115VAC
230VAC
Minimum Full
Load
Maximum
Maximum
Minimum
Output
Range
Voltage (V)
Set Point (V)
Voltage (V)
Load (A)
Load (A)
+3.3V
±5%
3.14
3.30
3.47
10.0
1.0
+5V
±2%
5.00
5.00
5.20
10.0
1.0
+12V
±5%
11.16
12.00
12.84
10.0
1.0
+12VIS
±5%
11.16
12.00
12.84
3.0
0.5
+5VSB
±5%
4.85
5.00
5.35
1.5
0.0
102.6
9.6
83.6
14.0
172.0
4X M4 SELF-CLINCHING NUT
MOLEX 09-75-2054
VOLTAGE ADJUST
L1
L2
GND
MOLEX 22-23-2021 PIN 1
MOLEX 22-23-2041 PIN 1
MOLEX 22-23-2031 PIN 1
MOLEX 39-30-1040 PIN 1
PIN 3
PIN 12
MOLEX 39-30-1240 PIN 1
30.0
200.0
11.9
KD
25
0
KD250
-
N/A
1:1
N/A
C
CLASS CODE
A
B
C
D
D
C
1
2
3
4
2
3
APPROVALS
CONTRACT NO.
QA
PROC. ENG.
MFG. ENG.
PROD. ENG.
DRAWN BY
SIZE
REV.
DWG. NO.
CAGE CODE
SHEET
TITLE
ORIGINAL (STAMP IN RED)
DWG. NO.
1
4
B
REVISIONS
CHK
REV
DESCRIPTION
BY
DATE
ECO
APPROVED
(yyyy-mm-dd)
1
OF
1
姜
宇
赫
UNLESS OTHERWISE SPECIFIED
TOLERANCES:
ALL DIMENSIONS ARE IN MILLIMETERS
DO NOT SCALE DRAWING
±.060
±.0005
±.020
±.005
.XXXX
DEC.
.XX
.XXX
.X
±1/64
FRAC
SURF
ANG ±1°
63
N/A
(yyyy-mm-dd)
DATE
A
SCALE
THIS DOCUMENT CONTAINS INFORMATION PROPRIETARY TO
KDK ELECTRONICS. ANY REPRODUCTION, DISCLOSURE, OR USE OF THIS DOCUMENT
IS EXPRESSLY PROHIBITEDEXCEPT AS KDK ELECTRONICS MAY OTHERWISE AGREE IN
WRITING.
KDK ELECTRONICS PROPRIETARY
KD250
OUTLINE DRAWING
2004-08-27
KDK ELECTRONICS, INC.
15520 On Orbit Drive
Saratoga, CA 95070
U.S.A.
Tel: (408) 741-1347
Fax: (650) 571-5123
www.kdk.cncdsl.com
