tscircuit/ti

lib/subcircuits/PowerMonitor_INA237.circuit.tsx

PCB

Schematic

import type { SubcircuitProps } from "@tscircuit/props";
import { INA237AQDGSRQ1 } from "../chips/INA237AQDGSRQ1.circuit.tsx";

export const PowerMonitor_INA237 = (props: SubcircuitProps) => (
  <subcircuit width={100} height={100} {...props}>
    <INA237AQDGSRQ1
      name="U1"
      schX={0}
      schY={0}
      schWidth={2.5}
      schHeight={2.8}
      showPinAliases={false}
      schPinArrangement={{
        leftSide: {
          direction: "top-to-bottom",
          pins: ["VS", "VBUS", "IN_POS", "IN_NEG", "GND"],
        },
        rightSide: {
          direction: "top-to-bottom",
          pins: ["A0", "A1", "SCL", "SDA", "N_ALERT"],
        },
      }}
      schPinStyle={{
        VBUS: { marginTop: 0.15 },
        IN_POS: { marginTop: 0.15 },
        IN_NEG: { marginTop: 0.15 },
        GND: { marginTop: 0.15 },
        A1: { marginTop: 0.15 },
        SCL: { marginTop: 0.3 },
        SDA: { marginTop: 0.15 },
        N_ALERT: { marginTop: 0.15 },
      }}
      connections={{
        VS: "net.VS",
        VBUS: "net.BUS_HIGH",
        IN_POS: "net.BUS_HIGH",
        IN_NEG: "net.LOAD_CHARGER",
        GND: "net.GND",
        A0: "net.GND",
        A1: "net.GND",
        SCL: "net.SCL",
        SDA: "net.SDA",
        N_ALERT: "net.N_ALERT",
      }}
    />

    <capacitor
      name="C1"
      capacitance="100nF"
      footprint="0402"
      schX={-3.75}
      schY={2.05}
      schRotation="180deg"
      connections={{
        pin1: "net.VS",
        pin2: "net.GND",
      }}
    />

    <battery
      name="B1"
      voltage="48V"
      footprint="pinrow2"
      schX={-8.75}
      schY={-1.35}
      schRotation="90deg"
    />

    <resistor
      name="R_SHUNT"
      resistance="0.001"
      footprint="2512"
      schX={-5.95}
      schY={-0.25}
      schRotation="270deg"
      connections={{
        pin1: "net.BUS_HIGH",
        pin2: "net.LOAD_CHARGER",
      }}
    />

    <resistor
      name="R_LOAD"
      resistance="10"
      footprint="1206"
      schX={-7}
      schY={-3.3}
      schRotation="270deg"
      connections={{
        pin1: "net.LOAD_CHARGER",
        pin2: "net.GND",
      }}
    />

    <voltagesource
      name="CHARGER"
      voltage="12V"
      footprint="pinrow2"
      schX={-4.1}
      schY={-3.3}
      schRotation="270deg"
    />

    <trace from=".B1 > .pin1" to={"net.BUS_HIGH"} />
    <trace from=".B1 > .pin2" to={"net.GND"} />
    <trace from=".CHARGER > .pin2" to={"net.LOAD_CHARGER"} />
    <trace from=".CHARGER > .pin1" to={"net.GND"} />

    <resistor
      name="R1"
      resistance="10k"
      footprint="0402"
      schX={4.1}
      schY={2.2}
      schRotation="270deg"
      connections={{
        pin1: "net.VS",
        pin2: "net.SCL",
      }}
    />
    <resistor
      name="R2"
      resistance="10k"
      footprint="0402"
      schX={5.0}
      schY={2.2}
      schRotation="270deg"
      connections={{
        pin1: "net.VS",
        pin2: "net.SDA",
      }}
    />
    <resistor
      name="R3"
      resistance="10k"
      footprint="0402"
      schX={5.9}
      schY={2.2}
      schRotation="270deg"
      connections={{
        pin1: "net.VS",
        pin2: "net.N_ALERT",
      }}
    />

    <chip
      name="J1"
      manufacturerPartNumber="MCU I2C Interface"
      footprint="pinrow4"
      schX={8.55}
      schY={-0.55}
      schWidth={2.3}
      schHeight={2.9}
      pinLabels={{
        pin1: "SCL",
        pin2: "SDA",
        pin3: "N_ALERT",
        pin4: "GND",
      }}
      schPinArrangement={{
        leftSide: {
          direction: "top-to-bottom",
          pins: ["pin1", "pin2", "pin3", "pin4"],
        },
      }}
      schPinStyle={{
        pin3: { marginTop: 0.25 },
      }}
      connections={{
        pin1: "net.SCL",
        pin2: "net.SDA",
        pin3: "net.N_ALERT",
        pin4: "net.GND",
      }}
    />

    <trace from="U1.VS" to="net.VS" />
    <trace from="U1.GND" to="net.GND" />
    <trace from="R2.pin1" to="net.VS" />

    <schematictext
      text="VS = 2.7V - 5.5V"
      schX={-3.1}
      schY={3.55}
      fontSize={0.2}
      anchor="center"
    />
    <schematictext
      text="48V BATT"
      schX={-9.65}
      schY={0.0}
      fontSize={0.22}
      anchor="center"
    />
    <schematictext
      text="I2C ADDR: 0x40"
      schX={1.55}
      schY={-2.2}
      fontSize={0.2}
      anchor="center"
    />
    <schematictext
      text="To MCU"
      schX={10.2}
      schY={-0.55}
      fontSize={0.24}
      anchor="center"
    />
  </subcircuit>
);

export default PowerMonitor_INA237;