Flipsky FSESC 75350 ESC Speed ​​Controller, 350A, 14-84V, 4-20S, with water cooled

Flipsky FSESC 75350 is a high-power electronic speed controller (ESC) based on the VESC platform, designed to control BLDC motors in high-current systems. It operates across a wide voltage range of 14–84 V and is compatible with 4–20S battery systems.

The controller supports a continuous current of up to 350 A at 50 V and up to 250 A at 75 V, with a peak current of up to 800 A. The actual permissible continuous load depends on mounting, ambient temperature, and cooling efficiency.

The model features an aluminum housing with water cooling, which ensures efficient heat dissipation during high-load operation and helps extend the lifespan of the electronic components.

The FSESC 75350 is powered by an STM32F405 Cortex-M4 (168 MHz) processor and supports BLDC and FOC modes, operation with Hall sensors and encoders, as well as sensorless motor control.

Parameter configuration is performed via VESC Tool.

Thanks to support for CAN, UART, USB, and other interfaces, the controller can be integrated into complex electric drive control systems.

Technical Specifications

• Model: FSESC 75350
• Type: Electronic Speed ​​Controller (ESC / VESC)
• Firmware: 6.06
• Firmware updates: Supported
• Operating voltage: 14–84 V
• Supported batteries: 4–20S
• Continuous current at 50 V: Up to 350 A
• Continuous current at 75 V: Up to 250 A
• Peak current: Up to 800 A
• BEC: 5 V / 1 A
• Max ERPM: 150,000
• Processor: STM32F405 Cortex-M4
• Processor frequency: 168 MHz
• DSP: Supported
• Motor control modes: BLDC, FOC (sinusoidal)
• Sensorless operation: Supported
• Supported sensors: ABI, HALL, AS5047, AS5048A
• Control modes: Current / Duty Cycle / Speed ​​/ PID
• Programming: VESC Tool
• Communication interfaces: USB, CAN, UART, SPI, IIC
• Supported input signal sources: PPM, ADC, NRF, UART
• Phase Filter: Yes
• Regenerative braking / recuperation: Supported
• Cooling: Water cooling
• Housing: Aluminum, with water cooling
• Dimensions: 200 × 94.6 × 50 mm
• Power/motor wires: 8 AWG, 2 paired wires

Note: Continuous current ratings depend on the mounting method, ambient temperature, and air/water circulation efficiency.

Advantages

• High power – continuous current up to 350 A and peak current up to 800 A.
• Wide power supply range – supports 4-20S systems and voltages of 14-84 V.
• Water cooling – improves heat dissipation during high-load operation.
• FOC control – ensures smooth and efficient control of compatible BLDC motors.
• Flexible configuration – parameter programming and setup via VESC Tool.
• Sensor and sensorless operation – supports HALL, ABI, AS5047, AS5048A, and sensorless modes.
• Energy regeneration – supports energy return to the battery during regenerative braking.
• Extensive interfaces – CAN, UART, USB, SPI, and I2C for integration with other electronics.
• Comprehensive protection – includes configurable protection mechanisms for the controller and motor.

Wiring diagram:

Protection system

The controller supports configurable protection against:

• undervoltage;
• overvoltage;
• overcurrent;
• MOSFET overheating;
• motor overheating.

Protection parameters can be adjusted according to the electric drive configuration.

Connectors and interfaces

• 1. CAN:
  • 5V
• • CANH
  • CANL
  • GND
• 2. SWD:
  • GND
• • DIO
  • CLK
  • 3.3V
• 3. UART2:
  • TX2
• • RX2
  • GND
  • 3.3V
• 4. PPM:
  • SERVO
• • 5V
  • GND
• 5. USB:
  • USB port for connection and configuration
• 6. COMM:
  • ADC15
• • ADC2
  • TX/SCL
  • RX/SDA
  • ADC1
  • GND
  • 3.3V
  • 5V
• 7. HALL:
  • 5V
• • TEMP
  • HALL1
  • HALL2
  • HALL3
  • GND

Type of connectors: JST PH2.0.