This design is a dual-phase automotive boost converter for Class-H audio applications using LMG2100R026 gallium nitride (GaN) half bridges and offering analog- or digital-output voltage tracking. The output power is 1000W at 11V input voltage (1250W peak at 12V). The converter area measures 47mm × 48mm, not including the reverse polarity protection and bulk input capacitance. This design is based on the LM5125-Q1. The pin-compatible LM51251-Q1 variant offering additional I²C for diagnostics and control can also be used in this design.
| Output voltage options | PMP31306.1 |
|---|---|
| Vin (Min) (V) | 10 |
| Vin (Max) (V) | 36 |
| Vout (Nom) (V) | 40 |
| Iout (Max) (A) | 31.25 |
| Output Power (W) | 1250 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | DC |
| Topology | Boost- Multiphase |
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| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | GaN-Based Dual-Phase Boost Converter Reference Design for Class H Audio Applications | PDF | HTML | Feb. 28, 2025 |
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