This reference design is a universal input, 71.4-V, 7-A constant current, constant voltage (CC/CV) charger for e-bike applications. The UCC28180 device is used for CCM PFC stage for 0.99 power factor and low-current total harmonic distortion. The UCC256403 is used for a half-bridge resonant converter, achieving 95.8% efficiency and fast load transient at constant voltage mode. A flyback using the UCC28910 provides auxiliary power for PFC, LLC, control circuits and cooling fans. The adjustable CC/CV option is reserved for the MCU board to make it feasible for multiple-cell battery charging applications.
| Output voltage options | PMP40766.1 | PMP40766.2 | PMP40766.3 |
|---|---|---|---|
| Vin (Min) (V) | 90 | 350 | 120 |
| Vin (Max) (V) | 264 | 410 | 410 |
| Vout (Nom) (V) | 390 | 71.4 | 12 |
| Iout (Max) (A) | 1.33 | 7 | .25 |
| Output Power (W) | 518.7 | 499.8 | 3 |
| Isolated/Non-Isolated | Non-Isolated | Isolated | Isolated |
| Input Type | AC | DC | DC |
| Topology | Boost- PFC | Full Bridge- LLC | Flyback- DCM |
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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Design file that contains information on physical board layer of design PCB
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Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Universal Input, 500-W CC/CV e-Bike Charger Reference Design | Jan. 11, 2021 |
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