uwr-5.2/3000-d5a C&D Technologies., uwr-5.2/3000-d5a Datasheet - Page 4

• Manufacturer Part Number: uwr-5.2/3000-d5a
• Description: Single Output, High Reliability, 2 X 2 , 14-20 Watt, Dc/dc Converters
• Manufacturer: C&D Technologies.

Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. For DATEL A-Series
UWR 14-20 Watt DC/DC Converters, you should use slow-blow type fuses
with values no greater than the following:
On/Off Control
The On/Off Control pin (pin 4) may be used for remote on/off operation. A
TTL logic high (+2 to +5 Volts, 250µA max.) applied to pin 4 disables the
converter. A TTL logic low (0 to +0.8 Volts, 70µA max.), or no connection,
enables the converter. Control voltages should be referenced to pin 2
(–Input). Applying a voltage to the Control pin when no input power is applied
to the converter can cause permanent damage to the converter.
Synchronization
In critical applications employing multiple switching DC/DC converters, it may
be desirable to intentionally synchronize the switching of selected converters
(so the system noise can be reduced with notch filtering) or to purposely
desynchronize the converters (to lessen the current-carrying requirements on
intermediate dc buses). For multiple A-Series Converters, an external clock
can be applied to pin 4 (Control) of each device. It should be a square wave
with a maximum 1µsec "high" duration and an amplitude between +2V and
+5V (see On/Off Control) referenced to pin 2 (–Input). The frequency of the
synchronizing clock should be higher than that of any individual converter.
Therefore, it should be 185kHz ±5kHz.
Output Trimming
V
trimpot should be connected as shown in Figure 2a with its wiper connected
to pin 8 (Trim). A trimpot can be used to determine the value of a single
fixed
resistor which should be connected as shown in Figure 2b. Connect the
resistor between pin 8 (Trim) and pin 6 (+Output) to trim "down" the output
voltage. Connect the resistor between pins 8 and 7 (Common) to trim "up"
the output voltage. Fixed resistors should be metal-film types with absolute
TCR’s less than 100ppm/°C to ensure stability.
Custom Capabilities
DATEL’s world-class design, development and manufacturing team stands
ready to work with you to deliver the exact power converter you need for your
demanding, large volume, OEM applications. More importantly . . . we’ll do
it on time and within budget!
Our experienced applications and design staffs; quick-turn prototype capabil-
ity; highly automated, SMT assembly facilities; and in-line SPC quality-control
techniques combine to give us the unique ability to design and deliver any
quantity of power converters to the highest standards of quality and reliability.
We have compiled a large library of DC/DC designs that are currently used
in a variety of telecom, medical, computer, railway, aerospace and industrial
applications. We may already have the converter you need.
Contact us. Our goal is to provide you the highest-quality, most cost-effective
power converters available.
OUT
may be trimmed ±5% via a single external trimpot or fixed resistor. The
D48A/D48E
V
IN
D12A
D5A
Range
Fuse Value
6A
4A
2A
www.murata-ps.com
Single Output, High Reliability, 2" x 2", 14-20 Watt, DC/DC Converters
1
2
1
2
+INPUT
–INPUT
+INPUT
–INPUT
Figure 2b. Trim Connections Using Fixed Resistors
Figure 2a. Trim Connections Using a Trimpot
Technical enquiries email: [e-mail], tel:
+OUTPUT
COMMON
+OUTPUT
COMMON
TRIM
TRIM
MDC_UWR14-20 Series.B01 Page 4 of 6
6
8
7
6
8
7
UWR Series
Trim
Down
Trim Up
20kΩ
5-10
TURNS
[phone]
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