Universal Test System for Boards Hosting Bpol12v DC-DC Converters

The ECAL Barrel and MTD Barrel Timing Layer subdetectors of CMS are approachingseries production of electronic boards, including voltage conditioning PCBs: LVRs and PCCsrespectively. 2448 LVRs and 864 PCCs will be installed during LS3 of the LHC. These boards arehosting radiation-tolerant bPOL12V ASICs which convert a broad input voltage range into requiredvoltage levels for microelectronics between 1.2-2.5 V. Each card must be tested multiple times atvarious production stages to ensure its conformity. This contribution describes a methodology oftesting bPOL12V conversion quality including the detection of instability regions at certain load levels.