Hobbywing XRotor Micro 20×20 45A 4-in-1 3-6S AM32 ESC

Size needn’t limit performance; the Hobbywing XRotor Micro 45A is a 20×20mm 4-in-1 ESC that outperforms some units twice its size. It can handle 3–6S voltage and up to 45A per channel. At its core is a 32-bit MCU running at up to 120 MHz with AM32 firmware installed, delivering the latest in ESC technology.

The XRotor Micro offers smooth and responsive control thanks to its dynamically adjustable PWM frequency (48–96 kHz). It supports a wide range of input protocols, including standard PWM, Oneshot125, Oneshot42, Multishot and DShot (up to DShot1200), with automatic detection on startup.

For added functionality, the ESC features a built-in voltage and current sensor to provide real-time telemetry to your flight controller. It also comes with an onboard 5V BEC, capable of powering your FC, receiver and other accessories. Soft mounting grommets are included to help reduce vibration transfer and ensure reliable operation in demanding builds.

Compact, powerful and reliable, the XRotor Micro 45A is a top choice for racers and freestyle pilots who need maximum performance in a 20×20 stack.

Features

• High-performance 32-bit ARM MCU running at up to 120 MHz with AM32 firmware
• Dynamic PWM frequency (48–96 kHz) for smoother and more efficient motor control
• Supports standard PWM (1–2 ms), Oneshot125, Oneshot42, Multishot and DShot (up to DShot1200) with automatic signal detection
• Advanced braking (damped light) for fast motor retardation and active freewheeling
• Built-in voltage and current sensor for telemetry feedback to the flight controller
• Integrated 5V BEC for powering FC, receiver and accessories
• Built-in beacon function — ESC can beep after inactivity, helping locate a lost model
• Soft mounting grommets included to reduce vibration transfer to the flight controller
• Compact 20×20 mm form factor with up to 45A continuous current per channel (3–6S LiPo)