FEAST(MP) First tests with the radiation tolerant DC/DC converter - PowerPoint PPT Presentation

Jul 27, 2023 •610 likes •759 views

FEAST(MP) First tests with the radiation tolerant DC/DC converter from CERN Florian Roether Institut fr Kernphysik FEAST features Input voltage range 5 to 12V Continuous 4A load capability Adjustable switching frequency 1-3MHz

FEAST(MP) First tests with the radiation tolerant DC/DC converter from CERN Florian Roether – Institut für Kernphysik
FEAST features • Input voltage range 5 to 12V • Continuous 4A load capability • Adjustable switching frequency 1-3MHz • Over-Current protection • Under-voltage lockup • Over-Temperature protection • Power Good output • Radiation tolerant: TID up to >200Mrad(Si)
Typical application
FEASTMP
FEASTMP test board
Temp vs output current Shutdown after 5min 105 95 85 Temperature (°C) 75 65 55 45 35 0 500 1000 1500 2000 2500 3000 3500 Output Current (mA) no Heatsink Heatsink High Load w. Heatsink
Efficiency vs output current 90,00 80,00 70,00 Efficiency (%) 60,00 50,00 40,00 30,00 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500 Output Current (mA)
Spectrum without low pass filter
Raw output without low pass filter
Low pass filter
Spectrum with low pass filter
Raw output with low pass filter
Conclusion • The noise produced by the DC/DC converter can be significantly reduced by low pass filters • FEASTMP with 2.5 Volt or even 1.8Volt will be tested to minimize the power loss in the LDOs • Further investigation into two layer DC/DC converter concept

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