Electronic component search and free download site.
Transistors,MosFET ,Diode,Integrated circuits

BWR-12/625-D5A View Datasheet(PDF) - DATEL Data Acquisition products

Part NameDescriptionManufacturer
BWR-12/625-D5A Dual Output A-Series, BWR Models High-Reliability, 2" x 2" 15-20 Watt, DC/DC Converters Datel
DATEL Data Acquisition products  Datel
BWR-12/625-D5A Datasheet PDF : 6 Pages
1 2 3 4 5 6
A Series
15-20W, DUAL OUTPUT DC/DC CONVERTERS
+
CIN
1
+INPUT
2
–INPUT
5
+OUTPUT
6
COMMON
7
–OUTPUT
+
COUT
+
COUT
Figure 2. Using External Capacitors to Reduce
Input/Output Ripple/Noise
1
+INPUT
2
–INPUT
5
+OUTPUT
6
COMMON
8
TRIM
7
–OUTPUT
LOAD
20k
5-10
Turns
LOAD
Figure 3a. Trim Connections Using a Trimpot
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
BWR 15-20 Watt DC/DC Converters, you should use slow-blow type fuses
with values no greater than the following:
VIN Range
Fuse Value
"D5A"
6A
"D12A"
4A
"D48A"
2A
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
The total output voltage span, from +Output (pin 5) to –Output (pin 7) may
be trimmed ±5% via a single external trimpot or fixed resistor. The trimpot
.
should be connected as shown in Figure 3a 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 Figures 3b and 3c. Connect the
resistor between pin 8 (Trim) and pin 5 (+Output) to trim "down" the output
voltages. Connect the resistor between pins 8 and 7 (–Output) to trim "up"
the output voltages. Fixed resistors should be metal-film types with absolute
TCR’s less than 100ppm/°C to ensure stability.
1
+INPUT
2
–INPUT
5
+OUTPUT
8
TRIM
6
COMMON
7
–OUTPUT
LOAD
LOAD
Figure 3b. Fixed-Value Trim Down Resistor
1
+INPUT
2
–INPUT
5
+OUTPUT
6
COMMON
8
TRIM
7
–OUTPUT
LOAD
LOAD
Figure 3c. Fixed-Value Trim Up Resistor
4
Direct download click here

 

Share Link : 
All Rights Reserved© datasheetq.com 2015 - 2020  ] [ Privacy Policy ] [ Request Datasheet  ] [ Contact Us ]