DGP30 Power-One, DGP30 Datasheet - Page 3

• Manufacturer Part Number: DGP30
• Description: Dgp30 Single-output Dc-dc Series Data Sheet
• Manufacturer: Power-One

DGP30 SERIES APPLICATION NOTES:
External Capacitance Requirements
No external capacitance is required for operation of the
DGP30 Series. However, it is recommended that the DGP30
Series use a capacitor of sufficient ripple current capacity
connected across the input pins if a capacitive input source is
farther than 1” from the converter. To meet the reflected ripple
requirements of the converter, an input impedance of less
than 0.05 Ohms from DC to 200 kHz is required. External
output capacitance is not required for operation, however it is
recommended that 1
0.1
noise. Additional output capacitance may be added for
increased filtering, but should not exceed 400
Negative Outputs
A negative output voltage may be obtained by connecting the
+OUT to circuit ground and connecting -OUT as the negative
output.
Remote ON/OFF Operation
The remote ON/OFF pin may be left floating if this function is
not used. It is recommended to drive this pin with an open
collector arrangement or a relay contact. When the ON/OFF
pin is pulled low with respect to the -INPUT, the converter is
placed in a low power drain state. Since the ON/OFF pin is
driven by a 9 volt internal source via a 100 kOhm resistor, the
pin should not be driven by TTL logic. Attempts to drive this
circuit with logic circuits may result in damage to user circuitry.
JAN 27, 2006 revised to JUN 12, 2006
μ
F ceramic capacitance be selected for reduced system
μ
F to 10
μ
F of tantalum and 0.001 to
μ
F.
DGP30 Single-Output DC-DC Series Data Sheet
Page 3 of 4
+OUT
-OUT
TRIM
Output TRIM
The TRIM pin may be used to adjust the output ±5% from the
nominal setting. This function allows adjustment for voltage
drops in the system wiring, as well 5.2 volt outputs for ECL
applications. Figure 1 shows the proper connections to use this
function. A trimpot value of 10 kOhm should be used for the 5
volt output. A trimpot value of 20 kOhm should be used for 12
and 15 volt outputs. If the TRIM function is not required, the pin
may be left floating.
USING TRIMPOT
5
7
6
10K
LOAD
Figure 1.
+OUT
-OUT
TRIM
USING FIXED RESISTORS
5
7
6
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TRIM
DOWN
TRIM
UP
LOAD