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https://github.com/diodeinc/pcb.git
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Lenny Khazan
acff75845c
* Support net symbols * Run renderer tests in CI * renderer -> LayoutEngine * wip * rename * add examples * support symbol "extends" * start reworking layout engine + snapshot tests * add examples * wip add nets * Add signature to ModuleValue * tweaks * per-component net labels * movable * WIP with ELK * wip libavoid * misc fix * better * betterer * improvements * more * update * junction detection * better * snapping and stuff * fix re-rendering * more better * more * cargo fmt * update bg * eslint * cleanup, tests
83 lines
2.5 KiB
Plaintext
83 lines
2.5 KiB
Plaintext
"""
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Type: High Side Current Sensor
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Description: High side current sensor using INA240A with 2mohm shunt resistor, 20x V/V gain. 80Vin Max
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"""
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load("@stdlib:zen/interfaces.zen", "Power", "Analog", "Ground")
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load("@stdlib:zen/units.zen", "Resistance")
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load("@stdlib:zen/config.zen", "config_unit")
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Resistor = Module("@stdlib:zen/generics/Resistor.zen")
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NetTie = Module("@stdlib:zen/generics/NetTie.zen")
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INA240A = Module("../INA240A/INA240A.zen")
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# -----------------------------------------------------------------------------
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# Component parameters
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# -----------------------------------------------------------------------------
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shunt_value = config("shunt_value", str, default="2mohm 1%", optional=True)
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shunt_package = config("shunt_package", str, default="2512", optional=True)
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shunt_mpn = config("shunt_mpn", str, optional=True)
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ina_gain = config("ina_gain", str, default="A1", optional=True)
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ina_package = config("ina_package", str, default="TSSOP", optional=True)
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properties = config("properties", dict, optional=True)
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ref_config = config("ref_config", str, default="GROUND")
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# -----------------------------------------------------------------------------
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# IO ports
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# -----------------------------------------------------------------------------
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power_bus_in = io("power_bus_in", Power) # Input power bus
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power_bus_out = io("power_bus_out", Power) # Output power bus
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power_3v3 = io("power_3v3", Power) # Digital power supply
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isense_out = io("isense_out", Analog) # Current sense output
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gnd = io("gnd", Ground) # Ground reference
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# -----------------------------------------------------------------------------
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# Component definition
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# -----------------------------------------------------------------------------
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_in_p = Analog("_in_p")
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_in_n = Analog("_in_n")
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shunt_properties = {}
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if shunt_mpn:
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shunt_properties = {
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"mpn": shunt_mpn,
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}
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# Create nettie modules for power connections
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NetTie(
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name="isense_shunt_high",
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P1 = power_bus_in.NET,
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P2 = _in_p.NET
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)
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NetTie(
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name="isense_shunt_low",
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P1 = power_bus_out.NET,
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P2 = _in_n.NET
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)
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# Shunt resistor
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Resistor(
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name="r_shunt",
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value=shunt_value,
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package=shunt_package,
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P1=power_bus_in.NET,
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P2=power_bus_out.NET,
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properties=shunt_properties,
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)
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# INA240 current sense inalifier
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INA240A(
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name="ina240",
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ref_config=ref_config,
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package=ina_package,
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gain=ina_gain,
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implementation_type="WITH_PASSIVES",
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power=power_3v3,
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gnd=gnd,
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in_p=_in_p,
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in_n=_in_n,
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out=isense_out,
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) |