Pmos

[Suke0811]

• Add: PMOS and PMOS reverse charger protection in the lib

• Add: test_protected_charger

• TODO: manufacture the charger

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Q: For the LipoConnector, there is no current_draw value, which errors out self.vbatt.link().current_draw.upper()
So currently, using current_limit instead. Is this a general implementation?

PolymorphicBlocks/electronics_lib/PowerConditioning.py

Lines 328 to 344 in 47ac586

	max_vcharge_voltage = self.chg.link().voltage.upper()
	max_vcharge_current = self.chg.link().current_drawn.upper()
	max_vbatt_voltage = self.vbatt.link().voltage.upper()
	max_vbatt_current = self.vbatt.link().current_limits.upper() # TODO: check if we should use current_limit or current_draw
	# Create the PMOS transistors and resistors based on the provided schematic
	self.mp1 = self.Block(Fet.PFet(
	drain_voltage=(0, max_vcharge_voltage), drain_current=(0, max_vcharge_current),
	gate_voltage=(- max_vbatt_voltage, max_vbatt_voltage),
	rds_on=self.rds_on,
	power=(0, max_vcharge_voltage * max_vcharge_current)
	))
	self.mp2 = self.Block(Fet.PFet(
	drain_voltage=(0, max_vbatt_voltage), drain_current=(0, max_vbatt_current),
	gate_voltage=(0, max_vcharge_voltage),
	rds_on=self.rds_on,
	power=(0, max_vbatt_voltage * max_vbatt_current)
	))

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related issues

#323