{"start":0,"take":1,"total":1,"items":[{"activityNumber":"1000046041","budgetReference":"E/0901-01 - Technology Developme","classified":false,"closingDate":"2026-10-06T13:00:00","extensionRequestDeadline":"2026-09-29T13:00:00","clarificationRequestDeadline":"2026-09-29T13:00:00","description":"ObjectivesExplore topologies based on GaN switches and digital control to discharge primarybatteries down the minimum possible voltage.The objective is to maximise the use of the energy in primary batteries.Build a breadboard with the most promising option and test its performance.DescriptionPrimary batteries have very high energy density but they cannot be recharged. Thus, itsmain use is for one-time use cases, for instance, landers or launchers.Typically a lander will not have any solar array so its only energysource is a battery. Sincethey will not be recharged, primary batteries make total sense.To extract the maximum amount of energy,the battery voltage will go down as the currentis taken out. The lower you go in voltage, the more energy you extract.However, decreasing the voltage has serious implications for the power system. In general,DC/DC converters operate at high efficiency levels in a narrow input voltage range.Moreover, the topologies will limit the maximum and minimum input voltage, which meansthat, in mostcases, the DC/DC converter used to discharge the battery will limit theoperation and the performance.This activity aims at exploring DC/DC converter topologies that can operate through largeinput voltage ranges with high performance. Efficiency is also very important in landerapplications since it is paramount to waste as little energy as possible.There are topologies that can operate through larger ranges that have not been used inspace applications so far and can be adopted easily. Moreover, new GaN switchesimprove the efficiency of the system and, if controlled by means of digital devices, complexenergy management systems can be built. Thus, multiple stages could be connected insuch a way that the optimum operation point is always at reach.The activity aims at building a breadboard of a high efficiency, high input voltage rangeDC/DC converter with GaN switches and digital control. The breadboard will be tested toverify the performance.","ecosrequired":true,"establishment":"ESTEC","firstPublicationDate":"2026-04-02T10:31:19","id":184837,"idEra":24889,"initiatingService":"TEC-EPM","ipmeasure":"N/A","isArchived":false,"isCancelled":false,"isReissued":false,"isToBeReissued":false,"issueQuarter":"261","lastUpdateTime":"2026-08-05T16:16:14","lastUpdateUser":"rhamill","openDate":"2026-08-05T14:31:44","priceRange":"200-500 KEURO","programmeReference":"Technology Developme","tanumber":"1-13407","title":"LARGE INPUT VOLTAGE RANGE GAN BDR FOR PRIMARY BATTERIES EXPRO+","directorate":"Directorate of Tech, Eng.  Quality","countries":[{"id":1},{"id":168},{"id":67},{"id":27},{"id":26},{"id":25},{"id":24},{"id":23},{"id":22},{"id":19},{"id":17},{"id":16},{"id":13},{"id":12},{"id":11},{"id":10},{"id":9},{"id":8},{"id":7},{"id":6},{"id":5},{"id":2},{"id":15}],"products":[{"id":329}],"technologies":[{"id":152}],"status":{"id":2},"tenderType":{"id":5},"isFavourite":false,"eraVersion":1,"stageNumber":null,"isNew":false,"isUpdated":false,"declarationOfCompliances":["All the required declarations of compliance have been addressed and included in our proposal's Cover Letter."],"keyAcceptanceFactors":["The Tenderer confirms, on its behalf and on behalf of its Subcontractor(s), to satisfy the “Eligibility Requirements” (see section 1.1 of the EXPRO/TC);","The Tenderer confirms, on its behalf and on behalf of its Subcontractor(s), to fulfil the requirements concerning “Free Competition” (see paragraph 10 of the Cover Letter of the Proposal Template);","The Tenderer confirms, on its behalf and on behalf of its Subcontractor(s), to accept the conditions established for “Non commitment by the Agency in competitive procurements” (see section 1.7 of the EXPRO/TC);","The Tenderer confirms, on its behalf and on behalf of its Subcontractor(s), to be compliant with the “Non Benefits Requirements” (see section 1.8 of the EXPRO/TC);","The Tenderer confirms that the tender Cover Letter and the Detailed Proposal contain a binding price;","The Tenderer confirms that the tender Cover Letter and the Detailed Proposal contain a price type compliant with the one requested in the ITT;","The Tenderer confirms that the tender is compliant with the budgetary limit applicable to the ITT;"],"evaluationCriterias":[{"criterion":"Background and experience (related to the particular field concerned) of the company(ies) and staff, including adequacy of the proposed facilities","weightingFactor":"30%"},{"criterion":"Understanding of the objectives of the activity and discussion of the problem areas, and adequacy of the programme of work","weightingFactor":"50%"},{"criterion":"Adequacy of the time dedication and costing, compliance with administrative tender conditions and acceptance of the contract conditions","weightingFactor":"20%"}],"entities":[],"procurementProposal":null,"responsible":"Christophe Rene R. Seynaeve","updateReason":"Tender Action Package Updated"}],"totalNew":0,"totalUpdated":0}