How to Remove DC/DC Trim on a Lattice ISP 1220

A Lattice ISP, such as the POWR1220, is used with a distribution system to convert power. To do this you will need a DC-to-DC converter. A power cable is used to connect the ISP POWR1220 to your DC-to-DC converter. However, there is also an internal power cable that is connected to a socket on the ISP circuit board and to the Digital Output port for the device.

Things You'll Need

• Phillips-head screwdriver

Instructions

1. Trace the power cable from the DC-to-DC converter to the POWR1220. Locate the “Digital Output” on the POWR1220. Disconnect the power cable from the Digital Output port and set the unit on a table or desktop.

2. Locate all of the screws that secure the cover to the device and remove them using a Philips-head screwdriver. Lift off the cover to expose the circuit board.

3. Trace the cable from the “Digital Output” port to the “+5 PWR” socket on the circuit board. Disconnect the cable from this socket. Disconnect the other end of the cable from the Digital Output port.

References

• Lattice Semiconductor: Set-up Instructions
• Lattice Semiconductor: Interfacing the ispPAC-POWR1208 with Modular DC-to-DC Converters