DCDC modules
CERN Power distribution team provided optimized board design, all available in EDMS.
No more physical modules are provided.
We strongly suggest to use these designs without modifications, or to carbon copy them. Optimisation has been done for dimensions and reliability. All new designs must be validated by us (with extraction of the parasitic input inductor)
The customer of bPOl12V can use these files to produce their own PCB, trying to copy as much as possible the power part, in particular the input capacitors and the PCB layer stackup. This design is the outcome of years of developement and should be modified as little as possible.
bPOL48V modules
high current, up to 10A, EDA-04668 , please choose version EDA-04668-V1-1 (v.0) bPOL48V_V2.1 - FixedTd
more compact, up to 6A EDA-04866
bPOL12V modules
bPOL12V_CLP like module, EDA-04584
bPOL2V5 module
The PCB design guidelines for reducing the input parasitic inductance is available here bPOL12V_LayoutGuidelines_V1
DISCONTINUED old modules (FEASTMP)
The production of the FEASTMP modules is finished, and no more modules will be produced. The main reason is that FEAST ASIC is not anymore produced (the Semicondutor Fab closing in 2022).
However the datasheet and documents on FEAST module will be kept here for customers that need to review them.
DCDC module FEASTMP. This is the production-grade module using the FEAST2 ASIC as well as the final inductor and shield. It is the positive version, providing positive output voltage in the range 0.9-5V from a positive supply. Due to the choice of the ruggedized connector, this module plugs vertically to a connector on the receiving board for a total stack heigh below 15mm.
DCDC module FEASTMP_CLP. This is a modified version of the module above, where the connector has been changed to allow for direct mounting on top of the receiving board. In this way, the stack heigh is reduced to below 10mm.
A prototype version of the module, FEASTMN, was developed to enable the supply of a negative output voltage from a positive input voltage. Prototype samples have been successfully tested, but they could not be controlled with the enable and PowerGood signal (this requires a modification in the ASIC). This side development has been abandoned because of lack of interest from the experiments, but it is technically possible.
Additional documentation
Production testing of FEASTMP This document explains the procedure used to systematically test FEASTMP modules just assembled, and details the acceptance criteria each module has to meet before distribution to the users.
HALT test on FEASTMP. This document summarizes the results of the Highly Accelerated Life Test (HALT) performed by a specialized firm on production-grade FEASTMP modules.
Screening of FEASTMP modules. This document details the procedure, based on a series of thermal cycles, applied to all production batches of the DCDC modules to screen out defective modules that might be subject to infant mortality in the field.
DCDC plug-in modules have been developed for test purposes in early phases of the project, and were made available to users on request. With the production-grade moduels ready, they are now discontinued.
DCDC module SM01C (discontinued). This module is based on a commercial DCDC Integrated Circuit and has been developed for test purposes in systems requiring a current exceeding the one rated for our custom ASICs. The SM01C module is targeted for a current of up to 5A. After having distributed samples of this module, or even developed 'double modules' on demand, the supply of this module has been discontinued in late 2013.
DCDC module AMIS5MP (discontinued). This module is based on an advanced radiation-tolerant ASIC (AMIS5), with characteristics very similar to the final circuit (FEAST). Other than the ASIC, also the components used in the module construction, as well as its layout, are very similar to the final production-grade modules. For these reasons, the AMIS5MP module is a good tool for anybody wishing to start integrating the DCDC modules in a detector system. AMIS5MP is the positive version of the module, providing positive voltage output.
DCDC module AMIS5MN (discontinued). This module is also based on the AMIS5 ASIC, but its integration in the module provides a negative output voltage from a positive input supply.