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79 lines
2.2 KiB
79 lines
2.2 KiB
7 years ago
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* POWERSECTION -> plot v(wake_pulse),v(wkup),v(wake),w(pwren),v(hold),v(p3v3)
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* RTC internal wakeup pulse
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** start rise fall plato period
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VWAKEUP wake_pulse 0 PULSE(0V 3.3V 40ms 10ms 10ms 50ms 10s DC=0V)
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** start rise fall plato period
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VSHUT shutdown_pulse 0 PULSE(0V 3.3V 400ms 10ms 10ms 100ms 10s DC=0V)
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* convergence friendly resistor
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RSHUT shutdown_pulse shut 220
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* convergence friendly internal resistor
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Rwk wake_pulse wake_base 1k
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* RTC internal NPN transisfor for open collector output
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Qwk WAKEUPn wake_base 0 BC847
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* hard 5V voltage
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Vhard5V hard_5V 0 5V
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* internal resistor provides "soft" USB 5V
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Rusb hard_5V USB5V 0.1
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* hard 3.3V voltage
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Vhard3V3 hard_3V3 0 3.3V
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* internal resistor provides "soft" 3.3V
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Rsmps hard_3V3 PWR3V3 0.1
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* base resistor
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R6 WAKEUPn WKn 1k
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* PNP transistor
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Q1 WKUP WKn USB5V BC857
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* Slow down capacitor, initially discharged
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C13 USB5V WKUP 2.2uF IC=0
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* diode to discharge C13 at shutdown
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D13 0 WKUP N4148
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* diode to activate onboard switching regulator
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D10 WKUP WAKE N4148
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* "OR" resistors
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R1 WAKE PWREN 15k
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R4 PWREN HOLD 15k
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* "OR" diode to 3.3V from switching regulator
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D11 P3V3 HOLD N4148
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* switching regulator, default off, starts by hysteresis
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SW3V3 PWR3V3 P3V3 PWREN 0 SWITCH OFF
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* pull down resistor
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R2 PWREN 0 47k
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* small mosfet
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M1 drain SHUT 0 0 N7002
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* drain resistor
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R8 drain PWREN 1k
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* mosfet gate slowdown resistor
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C14 SHUT 0 100nF
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* mosfet gate discharge (default OFF) resistor
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R5 SHUT 0 4.7MEG
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* diode to discharge gate at shutdown
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D14 SHUT P3V3 N4148
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.TRAN 1ms 2s
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.OPTIONS METHOD=GEAR, RELTOL=1E-3, itl1=500, itl4=500
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*.OPTIONS gmin=1e-11 reltol=4e-4 itl1=500 itl4=500
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*.OPTIONS gmin = 1E-12, reltol = 1E-3, itl1 = 500, itl4 = 500
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* .MODEL N4004 D (CJO=10pF TT=0.1ns)
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* .MODEL FINTERNAL D (CJO=10pF TT=0.1ns)
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* .MODEL Z12V D (BV=12V)
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* .MODEL F540 NMOS (LEVEL=1, VTO=3, KP=40, RS=0.033, RD=0.034)
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* .MODEL BD433 NPN (BF=100 TF=0.3ns CJE=10pF CJC=7pF)
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.MODEL SWITCH SW (VT=1V, VH=0.5V, RON=1, ROFF=10MEG)
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.MODEL N4148 D (CJO=0.2pF)
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.MODEL BC847 NPN (BF=150)
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.MODEL BC857 PNP (BF=150)
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.MODEL N7002 NMOS (LEVEL=1, VTO=1.8, KP=40, RS=0.033, RD=0.034)
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