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Table of Contents
M365 Classic/Pro ECU [ESC1]
ECU used in Xiaomi m365 and m365 pro
Version history
1.3 and lower – ST14xxx or mixed, U4 TPS54160
1.4 – ST15810
1.5 – some boards now feature NCEP85T14, tinned B+
2.1 – major overhaul, NCEP85T14, tinned traces, U4 SY8502 (up to 85V), PRO only
3.0 – same as 2.1 with reinforced traces from factory, and no PCB markings, PRO only
Specification
FETs used: ST14810, ST15810, NCEP85T14, NCE8596A (clone only)
Driver: MT8006A
Input capacitance: 63V 1000uF, 63V 33uF, 100V 100nF
Connectors:
Interface
PAP03-V [B038-PASK] – BMS, rear light
PAP05-V [B058-PASK] – Motor halls
PAP04-V [B048-PASK] – BLE
Power
Amass XT-30 PCB Female – Battery input
Resources
Circuit diagram for 1.4:
Circuit diagram for 2.1:
Connector pin-out:
SY8502 datasheet
MT8006A datasheet
TPS54160 datasheet
ST 15810 datasheet
ST 14810 datasheet
NCEP85T14 datasheet
PAP connectors on TME:
SPHD pins on TME:
Known issues / modification ideas
TPS54160 [1.5 and below] only accepts 56V safely, for more input voltage, trace cut method must be implemented, see here
SY8502 [2.1 and above] accepts up to 85V input, 65V safely
TO220 MOSFET packages are poorly thermally connected to the case, see here for possible improvements
B+ rail has poor electrical conductivity, see here for a fix
Phase connectors are known to be improperly crimped, it’s advisable to solder wires directly and attach MT30 or MT60 for better contact
Excessive braking current can burn MOSFET packages, due to active brake implementation