This isolated primary regulated flyback converter reference design provides a total of eight output voltages. These outputs consist of four isolated pairs of +18V and -5.1 V outputs with three pairs capable of 25 mA maximum and one capable of 75 mA maximum. These outputs are designed to be used as an IGBT driver bias supply for a total of six IGBTs (25 mA for three high-side drivers and 75 mA for three low-side drivers). It operates over an input voltage range of 7 V - 32 V in a compact form factor with a single transformer.
| Output voltage options | PMP22771.1 | PMP22771.2 | PMP22771.3 | PMP22771.4 | PMP22771.5 | PMP22771.6 | PMP22771.7 | PMP22771.8 |
|---|---|---|---|---|---|---|---|---|
| Vin (Min) (V) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Vin (Max) (V) | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Vout (Nom) (V) | 18 | -5.1 | 18 | -5.1 | 18 | -5.1 | 18 | -5.1 |
| Iout (Max) (A) | .075 | .075 | .025 | .025 | .025 | .025 | .025 | .025 |
| Output Power (W) | 1.35 | .3825 | .45 | .1275 | .45 | .1275 | .45 | .1275 |
| Isolated/Non-Isolated | Isolated | Isolated | Isolated | Isolated | Isolated | Isolated | Isolated | Isolated |
| Input Type | DC | DC | DC | DC | DC | DC | DC | DC |
| Topology | Flyback- Non Sync | Flyback- Non Sync | Flyback- Non Sync | Flyback- Non Sync | Flyback- Non Sync | Flyback- Non Sync | Flyback- Non Sync | Flyback- Non Sync |
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
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Four Output Flyback Bias Converter Reference Design for Inverter and Motor Drive | PDF | HTML | Mar. 24, 2021 |
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