BWR-15/670-D48A Murata Power Solutions Inc, BWR-15/670-D48A Datasheet - Page 4

• Manufacturer Part Number: BWR-15/670-D48A
• Description: DC/DC Converters & Regulators 20W 48V/+-15V+-670mA
• Manufacturer: Murata Power Solutions Inc
• Series: BWRr

Specifications of BWR-15/670-D48A

• Product: Isolated
• Output Power: 10 W
• Input Voltage Range: 18 V to 75 V
• Input Voltage (nominal): 48 V
• Number Of Outputs: 2
• Output Voltage (channel 1): +/- 15 V
• Output Current (channel 1): +/- 670 mA
• Output Voltage (channel 2): 15 V
• Output Current (channel 2): +/- 670 mA
• Isolation Voltage: 1.5 KV
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. For MPS A-Series
BWR 15-20 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.
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.
C
IN
+
V
D5A
D12A
D48A
IN
Range
Figure 2. Using External Capacitors to Reduce
2
1
+INPUT
–INPUT
Input/Output Ripple/Noise
Fuse Value
6A
4A
2A
+OUTPUT
–OUTPUT
COMMON
www.murata-ps.com
5
6
7
+
+
C
C
OUT
OUT
1 5 - 2 0 W , D u a l O u t p u t D C / D C C o n v e r t e r s
1
2
2
2
1
1
+INPUT
–INPUT
+INPUT
–INPUT
+INPUT
–INPUT
Figure 3a. Trim Connections Using a Trimpot
Figure 3b. Fixed-Value Trim Down Resistor
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Figure 3c. Fixed-Value Trim Up Resistor
–OUTPUT
+OUTPUT
COMMON
+OUTPUT
+OUTPUT
COMMON
–OUTPUT
COMMON
–OUTPUT
TRIM
TRIM
TRIM
8
5
7
6
5
6
8
7
5
8
6
7
BWR Models
MDC_BWR15_20_B02 Page 4 of 6
20k
5-10
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