ITM ESD Driver Main Circuit Board

Document #:

LIGO-D1600122-v2

Document type:

D - Drawings

Abstract:

The main circuit board containing the drive electronics, filtering, and switching functions for the ITM ESD drive system.

Files in Document:

• PDF of Schematic, BOM and Layout (ITM_LV_Driver_v2.pdf, 2.7 MB)

Other Files:

• Altium Project Files (Zipped) (ITM_LV_Driver_v2 (5-26-2016 2-36-02 PM).zip, 2.1 MB)
• Bill of Materials in Excel Format (ITM_LV_Driver_BOM_v1.xlsx, 20.8 kB)
• Gerber Files (zipped) (ITM_LV_Gerber_v1.zip, 283.3 kB)
• ODB++ Files (ITM_LV_DriverODB.zip, 626.8 kB)
• Pick and Place (csv format) (Pick Place for ITM_LV_Driver.csv, 58.1 kB)

ICS/JIRA Record:

• ICS_LINK

Topics:

• Sensing and Control

Authors:

• Rich Abbott

Keywords:

ESD

Notes and Changes:

Version 2 of this is a schematic change. The version 1 PCB is still unchanged (although it needs changes for future orders). A summary of schematic changes and jumpers added is as follows:

1. Found a miswiring between the Pole-zero DC outputs and the individual quadrants. Corrected by jumpers on board. Schematic is now correct, but future revisions of the PCB must be changed.
2. Found the relays on the Pole-zero stage are miswired. Corrected with jumpers on the board. Schematic now correct, but PCB must be updated for future revisions.
3. Corrected typos on page numbers and sheet titles
4. The miswiring on the LF DC relays produces an unfortunate readback logic situation. The normal state of the relay is reported as 0V which might lead to confusion if the cable were not connected.
5. Saw a slight microphonic tendency in the HV circuitry while at 400V out. Cause as yet unknown.