Hi,
I offer bare PCBs for a bipolar PSU based on the TPS7A4901/TPS7A3001 low noise LDO regulators. It is capable of up to +150mA/-200mA current supply at +33/-33 VDC. The absolute maximum supply voltage to the board is 25 VAC (each rail) or +36/-36 VDC. The board size is 3x8 cm, mounting holes are on the 10 mm grid (2x7cm center-to-center distance). The design is briefly documented here. The schematic and images of the bare and assembled boards are attached.
PCB is hand solderable. The only challenge is soldering the thermal pads of the regulator ICs. It requires strong soldering iron to conduct the heat through the vias from the underside to the thermal pads. Using hot air rework station significantly simplifies the assembly.
The estimated BOM at Mouser is around 38 Euro.
I also offer a new design board using DC-DC converter at the input (see post #10 for details and #11 for the BOM). The development thread is here. This board size is 3x7cm.
Price: 6 Euro/PCB (bare board, no parts)
Bipolar power splitter PCB: 2 Euro/PCB
Worldwide shipment: 2 Euro (ordinary mail) or 4 Euro (registered mail, traceable).
Payment by paypal.
PM if interested!
Regards,
Oleg
I offer bare PCBs for a bipolar PSU based on the TPS7A4901/TPS7A3001 low noise LDO regulators. It is capable of up to +150mA/-200mA current supply at +33/-33 VDC. The absolute maximum supply voltage to the board is 25 VAC (each rail) or +36/-36 VDC. The board size is 3x8 cm, mounting holes are on the 10 mm grid (2x7cm center-to-center distance). The design is briefly documented here. The schematic and images of the bare and assembled boards are attached.
PCB is hand solderable. The only challenge is soldering the thermal pads of the regulator ICs. It requires strong soldering iron to conduct the heat through the vias from the underside to the thermal pads. Using hot air rework station significantly simplifies the assembly.
The estimated BOM at Mouser is around 38 Euro.
I also offer a new design board using DC-DC converter at the input (see post #10 for details and #11 for the BOM). The development thread is here. This board size is 3x7cm.
Price: 6 Euro/PCB (bare board, no parts)
Bipolar power splitter PCB: 2 Euro/PCB
Worldwide shipment: 2 Euro (ordinary mail) or 4 Euro (registered mail, traceable).
Payment by paypal.
PM if interested!
Regards,
Oleg
Attachments
Last edited: