Connecting INA240 with Shunt Resistor

flux

  • Renamed c69b5780-ef9f-475c-97d1-bc3b5d8cb7a2 to INA_REF
  • Renamed 1df848c9-5cad-418f-9300-70d33a476d29 to INA_OUT

Worked

flux

Work done
  • U4: VS → 3V3; GND → GND; REF → 3V3; OUT → U3 PA0
  • Decoupling and input filter added: DCP_VIO_C, RC_R, RC_C
  • Added and sized 4-terminal shunt resistor SHUNT for 70 A @ ≤60% dissipation
  • Rerouted VBAT through shunt: severed VBAT–VBAT_bulk link; VBAT → SHUNT.P1; SHUNT.P2 → VBAT_bulk
  • Kelvin sense: SHUNT.P3 → U4:IN+; SHUNT.P4 → U4:IN–
  • Labeled nets INA_REF and INA_OUT; resolved all current-sense airwires
Success criteria review
  • ✅ INA240A1D VS, GND, REF, OUT pins correctly wired
  • ✅ 4-terminal shunt sized and Kelvin-connected to INA240 IN+ and IN–
  • ✅ All schematic airwires in current-sense stage resolved and connected
No remaining tasks. Next, would you like me to run an ERC check to verify the schematic or proceed to schematic review?
GT_R
Resistance
2.2 Ω
TLM_R
Resistance
100 Ω
GT_R
Resistance
2.2 Ω
GT_R
Resistance
2.2 Ω
DS_R
Resistance
22 Ω
GT_R
Resistance
2.2 Ω
PD_R
Resistance
47 kΩ
GT_R
Resistance
2.2 Ω
R2
Resistance
0 Ω
DS_R
Resistance
22 Ω
RC_R
Resistance
10 kΩ
VDRV_H_R
Resistance
100 kΩ
GT_R
Resistance
2.2 Ω
DS_R
Resistance
22 Ω
DS_R
Resistance
22 Ω
PD_R
Resistance
47 kΩ
R1
Resistance
0 Ω
PD_R
Resistance
47 kΩ
PD_R
Resistance
47 kΩ
GT_R
Resistance
2.2 Ω
VD_L_R
Resistance
30.1 kΩ
SHUNT
Resistance
120 µΩ
R3
Resistance
20 Ohm
GT_R
Resistance
2.2 Ω
IC1 GHA - GATE_R P1
DCP_VC1_C
Capacitance
0.1 uF
IC1 GHA - GATE_R P1
IC1 GHA - GATE_R P1
VBAT_ceramic_C P2 - GND GND
IC1 GHA - GATE_R P1
IC1 GHA - GATE_R P1
IC1 SHA - BOOT_CAP P1
TP-1 TP - U3 VDD
INA_RC_R P2 - U3 PA0
DCP_VDD_C
Capacitance
0.1 uF
U5 VIN_3 - VBAT_bulk_C P1
BT_C
Capacitance
0.1 uF
IC1 GHA - GATE_R P1
BT_C
Capacitance
0.1 uF
DCP_VIO_C
Capacitance
0.1 uF
U2 VOUT_3 - VDRV_R_HIGH P1
U4 OUT - U3 PA0
TP-1 TP - U3 VDD
VBAT_ceramic_C P2 - GND GND
U2 VOUT_3 - VDRV_R_HIGH P1
U3 PA3 - J1 3
U3 PA2 - J1 2
VBAT_ceramic_C P2 - GND GND
IC1 GHA - GATE_R P1
DCP_V2_C
Capacitance
0.1 uF
IC1 SHA - BOOT_CAP P1
IC1 SHA - BOOT_CAP P1
BT_C
Capacitance
0.1 uF
VB_C
Capacitance
22 uF
VB_C
Capacitance
0.1 uF
TP-3 TP - R1 P1
C1
Capacitance
0.1 uF
RC_C
Capacitance
0.1 uF
IC1 GHA - GATE_R P1
U3 PA3 - J1 3
U5 VOUT_2 - U5 VOUT_3
U5 VIN_3 - VBAT_bulk_C P1
VBAT_ceramic_C P2 - GND GND
C2
Capacitance
100 pF
IC1 GHA - GATE_R P1
BB_C
Capacitance
22 uF
INA_RC_R P2 - U3 PA0
U3 PA2 - J1 2
VBAT_ceramic_C P2 - GND GND
IC1 GHA - GATE_R P1
BB_O_C
Capacitance
0.1 uF
U5 VOUT_2 - U5 VOUT_3
U5 VOUT_2 - U5 VOUT_3
VBAT_ceramic_C P2 - GND GND
U5 VIN_3 - VBAT_bulk_C P1
IC1 GHA - GATE_R P1
INA_RC_R P2 - U3 PA0
TP-1 TP - U3 VDD
IC1 GHA - GATE_R P1
IC1 SHA - BOOT_CAP P1
IC1 GHA - GATE_R P1
IC1 GHA - GATE_R P1
U5 VOUT_2 - U5 VOUT_3
R1 P2 - U3 PA13
IC1 GHA - GATE_R P1
R1 P2 - U3 PA13
BT_C
Capacitance
0.1 uF
INA_RC_R P2 - U3 PA0
IC1 GHA - GATE_R P1
IC1 GHA - GATE_R P1
U2 FB - VDRV_R_HIGH P2
IC1 GHA - GATE_R P1
U2 FB - VDRV_R_HIGH P2
IC1 GHA - GATE_R P1
VBAT_ceramic_C P2 - GND GND
IC1 GHA - GATE_R P1
U5 VOUT_2 - U5 VOUT_3
IC1 SHA - BOOT_CAP P1
IC1 GHA - GATE_R P1
VBAT_ceramic_C P2 - GND GND
VBAT_ceramic_C P2 - GND GND
IC1 GHA - GATE_R P1
U4 OUT - U3 PA0
IC1 GHA - GATE_R P1
TP-3 TP - R1 P1
VBAT_ceramic_C P2 - GND GND
INA_RC_R P2 - U3 PA0
IC1 GHA - GATE_R P1
IC1 GHA - GATE_R P1
U1
U5
Q1
Q19
Q10
Q6
Q14
Q5
Q15
Q21
Q2
Q12
Q9
Q11
Q13
Q3
Q24
Q20
Q18
Q22
Q23
Q7
Q8
Q17
Q4
Q16
U4
TP-3
IC1
BB_L
Inductance
2.2 uH
U3
IC2
IC4
TP-2
TP-5
TP-1
TP-4
IC3
J1
U2
GND

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    1s 4in1 esc

    1s 4in1 esc thumbnail
    4-in-1 1S–2S 70A BLDC ESC with Integrated VBAT-to-5 V Buck-Boost Converter Feeding Onboard 3.3 V BEC (TLV62568) and 5 V Peripherals, Retaining TPS61088 for 10 V VDRV Power Stage, STM32G431CBT6 MCU Control with 12 PWM Outputs (dead-time insertion) and 4 DSHOT Inputs, 4× DRV8328 Gate Drivers, 24× NTMFS5C628NL MOSFETs, INA181 Current Sense, JST-SH FC Interface on a 2-Layer High-Current PCB #PowerManagement #MCUUpgrade #STM32G431 #12PWM #DSHOT

    Properties

    Buttons

    Battery

    ti.com/lit/an/slvaei3/slvaei3.pdf

    10

    USB

    S1: PC6; S2: PC7; S3: PB0; S4: PB1

    TIM1_CH1: PA8; TIM1_CH1N: PB13; TIM1_CH2: PA9; TIM1_CH2N: PB14; TIM1_CH3: PA10; TIM1_CH3N: PB15; TIM1_CH4: PA11

    Power Conversion

    Automotive

    flowchart TD VBAT["VBAT Input 1S-2S"] BulkCaps["VBAT Bulk Capacitors"] BuckBoost5V["VBAT to 5V Buck-Boost"] Rail5V["5V Rail"] BuckBEC3V3["3.3V BEC TLV62568"] Rail3V3["3.3V Rail"] BoostVDRV["10V VDRV Boost TPS61088"] VDRV10V["10V VDRV Rail"] MCU["STM32G431CBT6 MCU"] GateDrivers["DRV8328 Gate Drivers"] MOSFETs["NTMFS5C628NL MOSFETs"] CurrentSense["Shunt + INA181 Current Sense"] Telemetry["Telemetry / TLM"] JSTSH["JST-SH BM08B-SRSS-TB FC Header"] VBAT --> BulkCaps BulkCaps --> BuckBoost5V BuckBoost5V --> Rail5V Rail5V --> BuckBEC3V3 BuckBEC3V3 --> Rail3V3 BulkCaps --> BoostVDRV BoostVDRV --> VDRV10V Rail3V3 --> MCU Rail5V --> MCU VDRV10V --> GateDrivers Rail3V3 --> GateDrivers GateDrivers --> MOSFETs VBAT --> CurrentSense CurrentSense --> MCU MCU --> Telemetry Telemetry --> JSTSH VBAT --> JSTSH Rail5V --> JSTSH Rail3V3 --> JSTSH CurrentSense --> JSTSH ClockIn["External Clock/HSE"] --> MCU MCU -->|12 PWM| GateDrivers MCU -->|4 DSHOT| GateDrivers CurrentSense -->|ADC_IN| MCU Telemetry -->|UART_TX/RX| MCU

    Bare metal

    4-in-1 1S–2S 70A BLDC ESC with integrated VBAT-to-5 V buck-boost converter, 3.3 V BEC (TLV62568), 10 V VDRV rail (TPS61088), and STM32G431CBT6 MCU providing 12 PWM outputs and 4 DSHOT inputs for 4× DRV8328 gate drivers with current sense and telemetry.

    7.4

    V

    solderpad.org/licenses/SHL-2.1/

    Power Management

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $25.10–$27.72

    Digi-Key

    $10.93–$12.23

    LCSC

    $14.23–$14.36

    Mouser

    $37.83

    TME

    $4.50

    Verical

    $15.80–$141.66

    Controls