Summary of 12VDC TO 220-380VDC CONVERTER
This article describes a project to enhance cheap 12VDC to 220-380VDC converter boards by adding overload protection, output regulation, and low-voltage cutouts. Unlike standard inverters that convert DC to AC and back to DC, this modified system outputs pure high-voltage DC directly for efficient appliance power or as a source for variable frequency drives. The build utilizes specific driver boards and a pre-wound transformer to create a robust HV DC power supply.
Parts used in the High Voltage DC Converter Project:
- SG3525 Controller
- Four IRF3205 MOSFETs
- Transformer (Prewound 500W)
- 12VDC to 220-380VDC Converter Driver Board (Closed Loop)
- 12VDC to 220-380VDC Converter Driver Board (Open Loop)
When powering many appliances from a sine wave inverter, the HV DC is converted to AC only to be rectified back to DC in the appliance.
This inverter eliminates the SPWM stage and outputs DC only. This DC can be used to power appliances, or as a HV DC source for your SPWM, variable frequency drive (.. for your inverter fridge) or other project.
Ebay, AliExpress and other like stores have cheap 12VDC to 220-380VDC Converters (pictured above), ready for purchase under board names like QS-100 and GZF-02-Y.
These basic converter boards consist of a SG3525, four IRF3205 MOSFETs and a Transformer. They include no overload protection, output regulation/feedback or DC rectification. Nor do they include low voltage cutouts.
This project intends to build upon these boards and build in these other features and protection.
The converter uses a prewound 500W Transformer available from AliExpress.
This project requires a vertically mounted driver card – 12VDC to 220-380VDC Converter Driver Board (Closed Loop) or 12VDC to 220-380VDC Converter Driver Board – Open Loop.
Read more: 12VDC TO 220-380VDC CONVERTER
- What is the main purpose of this project?
To add overload protection, output regulation, and low-voltage cutouts to basic converter boards. - How does this inverter differ from standard sine wave inverters?
This inverter eliminates the SPWM stage and outputs DC only instead of converting to AC first. - What components are found on the basic converter boards?
The boards consist of an SG3525 controller, four IRF3205 MOSFETs, and a Transformer. - Can this DC output be used for other projects?
Yes, it can power appliances or serve as a HV DC source for variable frequency drives. - Which transformer is required for this build?
A prewound 500W Transformer available from AliExpress is used. - What type of driver card is needed for vertical mounting?
Either the Closed Loop or Open Loop 12VDC to 220-380VDC Converter Driver Board is required. - Do the original boards include low voltage cutouts?
No, the basic boards do not include low voltage cutouts. - Where can these converter boards be purchased?
They are available on platforms like Ebay and AliExpress under names like QS-100 and GZF-02-Y.
