ATORCH DL24MP-150W Purple¶


Status	supported
Source code	atorch
Channels	1
Voltage/current (CH1)	150W / 0.2-25A / 2-200V
Connectivity	serial over Bluetooth, BLE
Features	modular DC electronic load
Website	en.atorch.cn

The ATORCH DL24MP-150W Purple is a modular DC electronic load kit with serial connectivity over USB.

General¶

The base kit contains a control panel, featuring a color display and 4 buttons, and a master power module, rated for 0.2~25A, 0~200V, max 150W.

Slave modules can be connected, each increasing the maximum power by 150W.

Each power module is cooled by a 8cm fan blowing air through 4 smalls heatsinks ( one per power mosfet )

Operation requires a 12V power supply ( 1A for the base kit, increasing with each add slave module ).

If offers 7 modes of operation :

CC : Constant Current
CV : Constant Voltage
CR : Constant Resistance
CP : Constant Power
BRT : Determines the ESR of a battery
PT : Determines the maximum power provided by a power supply
CT : Determines the resistance of the wiring ?

Hardware¶

Power MOSFET x4: International Rectifier IRFP264N
MCU : HC32L170
Bluetooth IC : Unidentified ( SOIC8, marking BP0Kxxx-28A2)
Power meter IC x2 : HLW8110. Looks like the 2nd one might be used just as an ADC for the 2 temperature sensors.

The control panel PCB has an unpopulated socket that can be used to connect a rotary encoder and a push button, providing more practical controls.

Protocol¶

The device communicates through serial-over-Bluetooth (RFCOMM), appearing under the DL24M_SPP name, and BLE, under the DL24M_BLE name. The same protocol is used both on the BLE and Bluetooth link.

See ATORCH J7-c

The following measurements are available through that protocol :

Actual voltage
Actual current
Actual capacity ( in mAh, for battery capacity measurement )
Actual energy (in Wh)
External sensor temperature.

Photos¶

Atorch Dl24mp 150w Purple Master Pcb Bottom

Atorch Dl24mp 150w Purple Panel Pcb Bottom

Atorch Dl24mp 150w Purple Picture

Atorch Dl24mp 150w Purple Master Pcb Top Control Section

Atorch Dl24mp 150w Purple Panel Pcb Top