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)
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.
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