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150A Single ESC AT32F421K8U7

FPV Electronics > ESC (Electronic Speed Controllers)

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The AT32 Single ESC 150A is a powerful electronic speed controller designed for use in electric motors, especially within drone and RC vehicle applications.
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AT32 150A Single ESC Technical Brief

Overview

High-performance single-channel electronic speed controller based on the AT32F421K8U7 MCU, designed for extreme power applications in large drones and industrial UAVs.

1. Core Specifications

ParameterSpecification
MCUAT32F421K8U7 (120MHz Cortex-M4)
Continuous Current120A
Peak Current150A (10sec burst)
Input Voltage2-8S (8.4-33.6V)
ProtocolsDshot150/300/600/Multishot/Oneshot/PWM
BEC Output

Channel 1: 5V DC ±5%, 3A max (15W)

Channel 2: 12V DC ±5%, 3A max (36W)

BEC Protection

Overcurrent Protection (OCP)

5V rail: Trip point at 3A±10% (auto-disconnect)

12V rail: Trip point at 3A±10% (auto-disconnect)

Short-Circuit Protection (SCP)

Overload Protection

Dimensions50×28×6mm
Board Weight11g

2. Key Features

Power Stage

MOSFETs: 6x SQJQ402E Automotive N-Channel 40 V (D-S) 175 °C MOSFET 1.7mΩ
Capacitance: 19×22μF X7R ceramic + 1×1000μF Aluminum Electrolytic Capacitor
Base Firmware：AM32_  K _A_F421.hex

Hardware Features:
  3-phase PWM generator with dead-time control
  Hardware overcurrent protection (OCP)
  On-the-fly timing adjustment

3. Firmware Details

Core Firmware Specifications

ParameterSpecification
Base FirmwareAM32_AORC_K_A_F421.hex
Flash Size128KB
Config MethodBetaflight passthrough / USB-C

Feature Support

✔ Bi-directional DShot (RPM telemetry)
✔ Turtle mode (flip recovery)
✔ Dynamic PWM frequency (8-96kHz)
✔ Active braking (adjustable strength)
✔ RPM filtering support

4. Accessories Package

  • • 1x 1000UF 35V 10*20mm electrolytic capacitor

  • • 1x XT60-male 10AWG silicone cable 15cm length

  • 5. Connection Diagram

单体150AESC1.png单体150AESC2.png

 

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