This isolated power supply provides dual +15-V outputs at 120 mA each. This power supply is designed for biasing a MOSFET-based power stage that generates excitation for a separately excited synchronous motor (SSM). This design uses a combination of the LMR50410-Q1 buck pre-regulator and the SN6505-Q1 open-loop transformer driver with spread-spectrum modulation. The wide-input voltage range and flexibility make this a versatile design for wide range of applications where isolated power is necessary. This internal reference design is an alternative to the PMP22760 which uses a single-chip solution based on LM5180-Q1.
| Output voltage options | PMP22992.1 | PMP22992.2 | PMP22992.3 |
|---|---|---|---|
| Vin (Min) (V) | 6 | 6 | 6 |
| Vin (Max) (V) | 36 | 36 | 36 |
| Vout (Nom) (V) | 15 | 15 | 5 |
| Iout (Max) (A) | .12 | .12 | .8 |
| Output Power (W) | 1.8 | 1.8 | 4 |
| Isolated/Non-Isolated | Isolated | Isolated | Non-Isolated |
| Input Type | DC | DC | DC |
| Topology | Forward- Push Pull | Forward- Push Pull | Buck- Integrated Switch |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
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Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Dual 15-V, 120-mA Iso. Bias Power Supply Ref. Des. Using Buck & Push-Pull Conv. | PDF | HTML | Oct. 11, 2021 |
| Product overview | Isolated Power Topologies for PLC I/O Modules and Other Low-Power Applications (Rev. A) | PDF | HTML | Aug. 20, 2024 |
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