This reference design modifies the inboard transformer turns ratio from 5:1 to 3:1 to reduce input the range. The board supports input voltages from 24 V to 32 V and output voltages between 0.5 V to 1.0 V with output currents up to 40 A. This topology efficiently supports the high step-down ratio while providing significant output current and controllability. The original EVM was designed to evaluate the LMG5200 GaN half-bridge power stage and the TPS53632G half-bridge point-of-load (PoL) controller. This board implements the converter as a single-stage hard-switched half-bridge with a current-doubler rectifier. The board is a redesign of the LMG5200POLEVM-10 evaluation module.
| Output voltage options | PMP22089.1 |
|---|---|
| Vin (Min) (V) | 24 |
| Vin (Max) (V) | 32 |
| Vout (Nom) (V) | .85 |
| Iout (Max) (A) | 40 |
| Output Power (W) | 34 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | DC |
| Topology | Half Bridge- Hard Switched |
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
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| Type | Title | Date | |
|---|---|---|---|
| * | Test report | Half-Bridge Point-of-Load Converter Reference Design With GAN Technology | Dec. 17, 2019 |
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