Ivan Peric, DEPFET Workshop SWITCHER 4 Ivan Peric, Peter Fischer University Heidelberg
Ivan Peric, DEPFET Workshop Introduction Vertical DMOS structure Comparison of SWITCHER types Simulation results
Ivan Peric, DEPFET Workshop D G SB p- sub p- n- n+p+ D G S DNMOS (standard)
Ivan Peric, DEPFET Workshop D G SB p- sub p- n- n+p+ D G S DNMOS (standard) – gate voltage 3.5V
Ivan Peric, DEPFET Workshop D G SB p- sub p- n- n+p+ D G S DNMOS (standard) – drain voltage 50V 3.5V
Ivan Peric, DEPFET Workshop D G SB p- sub p- n- n+p+ D G S DNMOS (standard) - irradiation Leakage
Ivan Peric, DEPFET Workshop D G SB p- sub p- n- n+p+ D G S DNMOS (annular)
Ivan Peric, DEPFET Workshop D G SB p- sub p- n- n+p+ D G S DNMOS (annular)
Ivan Peric, DEPFET Workshop D G SB p- sub p- n- n+p+ D G S DNMOS (annular) – radiation tolerance No leakage
Ivan Peric, DEPFET Workshop D G SB p- sub p- n- n+p+ D G S DNMOS (annular) Too close ?
Ivan Peric, DEPFET Workshop Cylindrical geometry Radial geometry Charge density r x
Ivan Peric, DEPFET Workshop D G SB p- sub p- n- n+p+ D DNMOS (annular) S Too close
Ivan Peric, DEPFET Workshop D G SB p- sub p- n- n+p+ D G S DNMOS (annular)
Ivan Peric, DEPFET Workshop 20V maximal voltage Floating logic Two outputs/channel Rad soft Relative slow SWITCHER 2
Ivan Peric, DEPFET Workshop 600/ / Small current to hold source voltages R to prevent transient voltage stress * * * For low-voltage operation Vdd [2Vmax, Vmax] Various supplies 10.5V maximal voltage Floating logic (possible) Two outputs/channel (possible) Rad hard Fast 0,3,6,9V supply/output SWITCHER 3
Ivan Peric, DEPFET Workshop 50V maximal voltage Floating logic Two outputs/channel Rad hard Relative fast 0,3,17,20V supply/channel – 3 and 17 generated intenally Break before make SWITCHER 4
Ivan Peric, DEPFET Workshop logic out SWITCHER 4 20V 17V 3V 0V in
Ivan Peric, DEPFET Workshop SIMULATION
Ivan Peric, DEPFET Workshop SWITCHER channels - Clear and gate output - Pin compatible with switcher 2 - LVDS inputs - Shift register - Voltage regulators
Ivan Peric, DEPFET Workshop Regulator
Ivan Peric, DEPFET Workshop Regulator