= +40°C nominal input voltage unless otherwise specified.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
INPUT
Voltage Range
VKA50LS
VKA50MS
Maximum Input Current
VKA50LS
V
IN
= 16VDC
VKA50MS
V
IN
= 27VDC
Reflected Ripple Current
Peak - Peak
Input Ripple Rejection
DC to 1KHz
No Load Input Current LS/MS
Power Dissipation LS/MS
No Load
Standby, Primary On/Off Disabled LS/MS
Inrush Charge
V
IN
= V
IN
max.
VKA50LS
VKA50MS
Quiescent Operating Current
Primary On/Off Disabled
18
33
24
48
36
75
3.7
2.2
VDC
VDC
A
A
mA
dB
mA
W
W
INPUT
50
20
60
50/100
3.6/4.8
0.18/0.4
0.520
0.360
8
12
mC
mC
mA
PARAMETER
OUTPUT
Rated Power
Set point Accuracy
Line Regulation
Load Regulation
Output Temperature Drift
Output Ripple, p-p
Output Current Limit Inception
Output Short-Circuit Current (2)
Output Overvoltage Limit
Transient Response
Peak Deviation
Settling Time
CONDITIONS
MIN
0
TYP
MAX
50
1
0.05
0.05
UNITS
W
%
%
%
%/°C
V
OUT
, Nom
l
OUT
, Nom
l
OUT
, Nom
V
V
OUT
, Nom
µSec
OUTPUT
High Line to Low Line
No Load to Rated Load
DC to 20MHz BW
test
0.02
0.02
±.02
1%
125%
50 to 100% Load Step
di/dt = 1.0A/µSec
V
OUT
, 1% of Nominal Output
2%
100
130%
110%
130%
PARAMETER
ISOLATION
Input to Output
Input to Baseplate
Output to Baseplate
Resistance
Capacitance
Leakage Current
GENERAL
Efficiency, Line, Load, Temp. (3)
Switching Frequency
Remote Sense Compensation
Output Voltage Adjust Range
Remote On/Off Control Inputs
Primary
Sink Current-Logic Low
Vlow
Vhigh
Turn-on Time
Weight
TEMPERATURE
Operation/Specification
Storage
Shutdown Temperature
Thermal Impedance, case-ambient
Lead Solder Temperature
NOTES:
(1)
(2)
(3)
(4)
(5)
CONDITIONS
Peak Test for 2 Seconds
MIN
1500
1500
500
10
TYP
MAX
UNITS
VDC
VDC
VDC
MΩ
pF
µA,
rms
V
ISO
= 240VAC, 60Hz
2000
180
GENERAL
400
12V & higher(4)
Open Collector/Drain
420
-50% / +25%
440
0.5
KHz
V
V
OUT
, Nom
Within 1% of Rated Output
10.0
1.0
0.4
Open Collector
12.5
85 (3.0)
+100
+125
+115
+300
mA
V
mSec
g (oz.)
°C
°C
°C
°C/W
°C
Case Temperature
Case Temperature
Case Temperature
10 Seconds max
-40
-55
+100
+25
+25
7.1
See Typical Performance Curves, page 3
Continuous Mode
See graphs for Efficiency vs. Output Load, V
IN
, T
CASE
3.3V Models Limited in Trim Down Range
Consult Factory for Details
VKA50xS
Rev C
3/2001
Product: www.cdpowerelectronics.com
2
T
CASE
= +40°C nominal input voltage unless otherwise specified.
TYPICAL PERFORMANCE CURVES
VKA50
Device Family
Indicates 50 Watt Regulated Unit
Model Number
Selected from Table of Electrical Characteristics
Where:
x = Input Voltage (L = 24VDC; M = 48VDC)
zz = Output Voltage (03=3.3V, 05=5V, etc.)
Lead Length
0.200" - No Number
0.145" - (6)
0.110" - (8)
Remote On-Off Logic:
Positive - No Number
Negative - (1)
VKA50xS
Rev C
xSzz -
Product: www.cdpowerelectronics.com
ORDERING
INFORMATION
3/2001
3
MECHANICAL
NOTES:
All dimensions are in inches (millimeters).
0.530 MAX
[13.46]
0.20 [5.1]
PIN PLACEMENT TOLERANCE: ± 0.005"
MECHANICAL TOLERANCE: ± 0.015"
Marked with: specific modeL ordered, date code, job code.
.040 [1.02] DIA.
7 PLACES
.081 [2.06] DIA.
2 PLACES
0.20 [5.1]
0.50 [12.7]
MATERIAL: Units are encapsulated in a low thermal
resistance molding compound which has excellent chemical
resistance and electrical properties in high humidity
environments and over a wide operating temperature range.
The encapsulant and outer shell of the unit have UL94V-0
ratings. Lead material is solder plated to allow ease of
solderability.
0.40 [10.16]
.400 [10.16]
2.000
[50.80]
1.000
[25.40]
2.40
[61.0]
MAX
VKA50xS
0.700
[17.78]
1.000
[25.40]
1.400
[35.56]
1.400
[35.56]
0.19 [4.8]
1.900
[48.26]
MOUNTING INSERTS M3 X 0.5 THRU, 4 PLACES
MAX. TORQUE, 8 IN/LBS
2.28
[57.91]
MAX
OUTPUT ADJUST VOLTAGE
This feature allows the user to accurately adjust the
module's output voltage set point to a specified level.
This is achieved by connecting a resistor or potentiometer
from the TRIM terminal to either the +Vout terminal (for
increased Vout) or the -Vout terminal (for decreased
Vout). The formulae below describe the trim resistor
value to obtain a Vout change of
∆
%. V
O
is output
voltage prior to adjustment (3.3V, 5V, 12V, 15V, or 24V).
Radj - up =
OVP NOTE
Special attention should be given to the peak voltage
deviation during a dynamic load step when trimming
the output above the original set point to avoid
tripping the overvoltage protection circuit. Should an
OVP condition occur, the converter will go into a
latch condition and must be externally reset before it
will return to normal operation.
(
Vo(100 +
∆
%)
1.225
∆
%
_
(100 + 2
∆
%)
∆
%
)
kΩ
Radj - down =
(
100
-
2
)
∆
%
kΩ
C&D Technologies (Power Electronics) Ltd.
Shannon, Co. Clare, Ireland
Tel: +353.61.474.133 Fax:+353.61.474.141
Power Electronics Division, United States
3400 E Britannia Drive, Tucson, Arizona 85706
Tel: 800.547.2537 Fax: 520.770.9369
C&D Technologies, (NCL)
Milton Keynes MK14 5BU UK
Tel: +44 (0)1908 615232 Fax: +44 (0)1908 617545
Any data, prices, descriptions or specifications presented herein are subject to revision by C&D Technologies, Inc. without notice. While such information is believed to be
accurate as indicated herein, C&D Technologies, Inc. makes no warranty and hereby disclaims all warranties, express or implied, with regard to the accuracy or
completeness of such information. Further, because the product(s) featured herein may be used under conditions beyond its control, C&D Technologies, Inc. hereby
disclaims all warranties, either express or implied, concerning the fitness or suitability of such product(s) for any particular use or in any specific application or arising from
any course of dealing or usage of trade. The user is solely responsible for determining the suitability of the product(s) featured herein for user’s intended purpose and in
user’s specific application. C&D Technologies, Inc. does not warrant or recommend that any of its products be used in any life support or aviation or aerospace applications.
On June 17, the U.S. Consumer Product Safety Commission (CPSC) announced the recall of Chinese-made children's belts. The product has been sold in the United States since December 2008. This time, abo...
Please screen the participants!
I have an old TV! Hitachi TX80D12VCOCAB LCD screen, but the tuner of the motherboard is broken, so I want to replace the motherboard! Please give me the parameters of t...
[size=4]Vote~ The 27th round of the monthly prize selection has begun. Come and vote for the good articles and replies in your eyes~~ [color=#0000ff]Voting rules: [/color] Netizens post replies to vot...
Hello everyone, I am programming with TI's 2407DSP. Now, an error occurs when loading the program into the external RAM. Please help me analyze the cause, please! The error message is as follows: Data...
According to statistics from the job search alliance formed by our newspaper and more than 10 media outlets across the country, affected by the international financial crisis, this year, the jobs in t...
How do you know if a machine is operating properly? The answer: by leveraging deep learning to detect anomalies in routine vibration data from industrial machines. Anomaly detection has many uses, ...[Details]
A line scan lens is an industrial lens used with line scan cameras. Its imaging principle is to capture the image of the workpiece using a linear sensor and then perform digital signal processing t...[Details]
Long ago, the lifespan of cars in my country was 15 years. Once a car reached 15 years old, it was forced to be scrapped. However, the policy was later changed. As long as the car does not exceed 6...[Details]
On August 25th, SK Hynix announced that it has completed development and entered mass production of its 321-layer, 2Tb QLC NAND flash memory product. This achievement marks the world's first applic...[Details]
introduction
As “energy conservation and emission reduction” has become an indicator of the National Economic Development Outline of the 11th Five-Year Plan, people’s awareness of green enviro...[Details]
In the scorching summer, electric fans are a must-have for cooling down people's homes. However, I believe most people have encountered this situation: the fan is plugged in, the switch is pressed,...[Details]
UPS stands for Uninterruptible Power Supply, which includes energy storage devices. It is mainly used to provide uninterruptible power supply for devices that require high power stability.
...[Details]
1. Multi-channel DAC technology bottleneck
Currently,
the development of multi-channel DAC technology focuses on two core challenges.
First, industrial applications urgently ...[Details]
A multilevel inverter converts a DC signal into a multilevel staircase waveform. Instead of a straight positive-negative output waveform, the output waveform of a multilevel inverter alternates in ...[Details]
1. Fault phenomenon and cause analysis
1. During the operation of the equipment, the expansion sleeve is subjected to a large torque, and the mating surfaces of the shaft and the sleeve move...[Details]
Magna's integrated in-cabin perception system fuses vision and millimeter-wave radar data to detect the presence of passengers, identify stranded children, monitor driver fatigue and vital signs, a...[Details]
In the field of communications power supplies, AC/DC rectifier power supplies are called primary power supplies or basic power supplies, while DC/DC converters are called secondary power supplies. ...[Details]
With the increasing popularity of automated equipment, linear modules, a common auxiliary device for automated equipment, have also seen a bright future. In particular, in recent years, many small ...[Details]
Civilian internal combustion engines operate in the range of approximately 1000-4000 rpm. This results in the engine's kinetic energy being ineffective at low or high rpm, making starting difficult...[Details]
On August 21, according to a report by Korean media SEDaily yesterday, according to semiconductor industry sources, the HBM4 samples provided by Samsung to Nvidia last month have passed initial tes...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
