Overview
The MAD AMPX 30A 80-440V ESC is a high-performance electronic speed controller (ESC) designed for heavy-lift multirotors, UAVs, and other demanding applications. Utilizing IGBT three-phase full-bridge inverter technology, this ESC supports sensor-less Field-Oriented Control (FOC) for precise motor performance. With a peak output current of 75A and support for input voltages from 80V to 440V, this controller is built for high-power propulsion systems. Advanced thermal management, current limiting, and overvoltage/undervoltage protections ensure stability and longevity, making it ideal for professional and industrial drone applications.
Key Features
- Wide Voltage Compatibility: Supports DC80V to DC440V with built-in overvoltage and undervoltage protection.
- High Efficiency: ≥98% efficiency, minimizing energy loss.
- FOC Control for Stability: Sensor-less Field-Oriented Control (FOC) for optimal performance and real-time motor adaptation.
- Strong Power Output: Delivers continuous 30A current and up to 60A output current with smart power management.
- Flexible Frequency Range: Supports output frequencies up to 1200Hz, with adjustable limits.
- Multiple Communication Interfaces: CAN, TTL232, and PWM/PPM support for telemetry, control, and real-time monitoring.
- Robust Cooling System: External forced air cooling for sustained high-load operations.
- Protection Mechanisms: Includes overvoltage, undervoltage, overheating, and throttle detection to prevent system failure.
Specifications
Parameter | Details |
---|---|
Model | AMPX 30A 80-440V |
Application | Heavy multirotor UAVs, underwater thrusters, electric vehicles |
Input Voltage | DC80V to DC440V, with overvoltage/undervoltage protection |
Input Current | ≤30A, with current limiting protection |
Output Current | ≤60A, with power protection |
Output Frequency | ≤1200Hz, adjustable |
Modulation Mode | SVPWM, Carrier Frequency: 12kHz |
Control Mode | Sensor-less FOC |
Working Efficiency | ≥98% |
Communication Interface | CAN, TTL232, PWM/PPM (50Hz to 400Hz) |
Weight | ≤1.5kg |
Dimensions | 204mm × 88mm × 55mm |
Cooling Mode | External forced air cooling |
Operating Temperature | -20°C to 90°C, with thermal protection |
Protection Degree | Advanced protection suite |
ESC Protection Mechanisms
- Undervoltage Protection: Automatically stops output when voltage drops below the threshold.
- Overvoltage Protection: Protects against voltage spikes; allows controlled deceleration in case of motor-induced overvoltage.
- Throttle Detection: Monitors throttle signal and prevents unintended acceleration due to loss of control.
- Sensor Zero-Point Detection: Ensures correct phase alignment upon startup.
- Overtemperature Protection: Dynamically adjusts current and output power to prevent overheating.
Throttle Calibration Steps
- Connect the ESC PWM signal to the receiver.
- Turn on the remote control and set the throttle to maximum.
- Power on the ESC, wait for calibration tones.
- Set the throttle to the starting position and confirm calibration tones.
- ESC saves max and min throttle settings.
- Power off the ESC.
ESC Connection & Wiring
-
Power Cables:
- Red: Positive Power Input
- Black: Negative Power Input
- Signal Cables:
Recommended Motor & Propeller Pairing
Electric Regulation | Motor | Voltage | Propeller |
---|---|---|---|
AMPX 30A FOC | M25 KV12 | 400V | 40X13.1 |
AMPX 30A FOC | M30 KV15 | 400V | 40X13.1 |

AMPX 30A ESC features premium materials, rugged design, and good heat dissipation. It uses IGBT three-phase full bridge inverter topology with a peak output current of 75A. Sensor-less FOC technology ensures efficient control. Specifications include input voltage DC80V-440V, instant current 30A, battery section 100S, and working efficiency ≥98%.

ESC Protection mechanism details include undervoltage, overvoltage, throttle detection, sensor zero-point, and overtemperature protection. Communication protocol is IG-UART_V1.2 with 19200 baud rate. ESCs are compatible with most DC Brushless Motors. Throttle calibration steps involve connecting PWM signal, setting maximum and minimum throttle, and saving settings.

ESC Connection diagram includes motor, PWM, ESC, and battery. Dimension drawing specifies sizes. AMPX ESC recommendations list electric regulation, motor types, voltage, and propeller size.