bcp-3.3-2.5 C&D Technologies., bcp-3.3-2.5 Datasheet - Page 6

• Manufacturer Part Number: bcp-3.3-2.5
• Description: 3.3v And 2.5v, Half-brick 50 Watt, Dc/dc Converters
• Manufacturer: C&D Technologies.

Output Trimming
Both the 3.3V and 2.5V outputs of the BCP Series can be independently
trimmed via a trimpot (Figure 3A) or a single fixed resistor as shown (Figures
3B & 3C). The trimpot can be used to determine the value of a single fixed
resistor. A single fixed resistor can increase or decrease the output voltage
depending on its connection. Fixed resistors should have absolute TCR’s
less than 100ppm/°C to ensure stability.
A resistor connected from the Trim Pin (pin 5 for 3.3V trim, pin 8 for 2.5V
trim) to the appropriate Return (pin 6 for 3.3V trim, pin 9 for 2.5V trim) will
increase the output voltage.
C&D Technologies, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
Tel: [phone]
www.cd4power.com
ISO 9001 REGISTERED
© 2006 C&D Technologies, Inc.
C&D Technologies, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical
information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the
granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
www.cd4power.com
www.cd4power.com
P O W E R E L E C T R O N I C S D I V I S I O N
Figure 3B. Increase Output Voltage Trim Connections Using a Fixed Resistor
1
4
1
4
–INPUT
+INPUT
+INPUT
–INPUT
Figure 3A. Trim Connections Using a Trimpot
®
[phone]
email: [e-mail]
+2.5V OUTPUT
+3.3V OUTPUT
+2.5V OUTPUT
+3.3V OUTPUT
2.5V RETURN
3.3V RETURN
2.5V RETURN
3.3V RETURN
2.5V TRIM
3.3V TRIM
2.5V TRIM
3.3V TRIM
Fax: [phone]
10
10
8
9
7
5
6
8
9
7
5
6
TURNS
TURNS
+2.5V
+3.3V
TRIM
TRIM
DS-0534
20kΩ
20kΩ
5-22
5-22
UP
UP
+2.5V
LOAD
+3.3V
LOAD
+2.5V
LOAD
+3.3V
LOAD
7/07
USA: Tucson (Az), Tel: [phone], email: [e-mail]
Canada: Toronto, Tel: [phone], email: [e-mail]
United Kingdom: Milton Keynes, Tel: [phone], email: [e-mail]
France: Montigny Le Bretonneux, Tel: [phone], email: [e-mail]
Germany: München, Tel: [phone], email: [e-mail]
Japan: Tokyo, Tel: [phone], email: [e-mail]
China: Shanghai, Tel: [phone], email: [e-mail]
A single resistor connected from the Trim Pin (pin 5 for 3.3V trim, pin 8 for
2.5V trim) to its appropriate +Output (pin 7 for 3.3V trim, pin 10 for 2.5V trim)
will decrease the output voltage.
Figure 3C. Decrease Output Voltage Trim Connections Using a Fixed Resistor
Osaka, Tel: [phone], email: [e-mail]
Website: www.cd4power.jp
Guangzhou, Tel: [phone], email: [e-mail]
50W, Dual Output, Mixed-Voltage DC/DC Converters
1
4
–INPUT
+INPUT
+2.5V OUTPUT
+3.3V OUTPUT
2.5V RETURN
3.3V RETURN
2.5V TRIM
3.3V TRIM
10
D C / D C C O N V E R T E R S
8
9
7
5
6
BCP Models
MDC_BCP50W_A01
DOWN
DOWN
+2.5V
+3.3V
TRIM
TRIM
+3.3V
+2.5V
LOAD
LOAD
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