LDO Leviathan Board

Christian Reil — Wed, 27 Dec 2023 21:02:45 +0000

The Voron Leviathan V1.2 is collaboration between JNP and the team at LDO to create a controller board specific for the needs of VORON 3D printers.

It features:

STM32F446 Microcontroller at 180Mhz clock speed.
Reverse polarity protection for main power supply and HV Stepper supply input
Superior stepper driver cooling (passive)
Dedicated mounting space for a Raspberry Pi 3,4,5 or Zero 2W
Dedicated power supply and uart port for Raspberry Pi
5x Integrated TMC2209 stepper drivers.
2x Integrated 48V rated TMC5160 stepper drivers.
4x Fan ports with flyback protection, 5V/24V selectable voltage, and tachometer inputs.
4x Thermistor ports with 2k2 ohm pullup resistors.
1x Dedicated LED strip with flicker free dimming down to 1%.
1x Neopixel port.
1x Hotend power output up to 180W.
1x Hotbed power output up to 240W
1x Dedicated Z probe port with selectable voltage and integrated diode.
3x Endstop ports and a filament sensor port

Electrical Specifications

Parameter	Symbol	Min	Typ	Max	Unit	Comments
Main Supply Voltage	V_in	18	24	28	V	Supply voltage for the entire PCB except for HV stepper drivers
HV Stepper Supply Voltage	V_HV	24	48	55	V	Supply voltage for the HV stepper drivers
RPi Supply Out	I_RPI			3	A	Current rating of Raspberry Power supply output
Hotend Current	I_he			7.5	A	Current rating of hotend channel
Heatbed Current	I_hb			10	A	Current rating of heatbed channel
Fan Current	I_fan			0.5	A	Current rating per fan channel
Stepper Current	I_mot			2	A	Current rating of each TMC2209 stepper channel
HV Stepper Current	I_{hv_mot}			3	A	Current rating of each TMC5160 stepper driver
Neopixel Current	I_rgb			0.5	A	Current rating Neopixel port
LED-Strip Current	I_led		0.35		A	Current rating of LED strip
Endstop IO Level	V_stop		3.3	5.0	V	Logic level of endstop input
Filament Sensor IO Level	V_fil		3.3	5.0	V	Logic level of filament sensor input