A highly integrated solution such as the LTM4654 μModule regulator from Analog Devices can be used for very compact, high-power hybrid voltage conversion.
This solution can convert a DC link voltage up to 55 V to a lower, adjustable voltage of 5 V or 12 V, for example. The converted power can be up to 300 W continuously.
Figure 3 shows a solution with the highly integrated LTM4654. This circuit requires very few external components and allows for a conversion efficiency of 96.7% at a conversion of 48 V input voltage to 9 V output voltage at 15 A load current.
This 300 W module is only 16 mm × 16 mm and has a height of 8.96 mm.
Figure 3. A highly integrated µModule regulator in a power bus converter application (simplified depiction).
Related Article:
- How does a hybrid converter improve efficiency compared with a conventional buck regulator?
- Why is converting 48 V to a low output voltage is challenging for a conventional buck regulator?
- What Are the Benefits of Using Hybrid Converters in Modern Power Systems?
- How Does the LTM4654 Achieve High-Efficiency 48 V to Low-Voltage Power Conversion?
Applicable Part Numbers
| DigiKey Part Number | Manufacturer Part Number |
|---|---|
| 505-LTC7821EUH#PBF-ND | LTC7821EUH#PBF |
| 505-LTC7821EUH#TRPBFTR-ND,505-LTC7821EUH#TRPBFCT-ND,505-LTC7821EUH#TRPBFDKR-ND | LTC7821EUH#TRPBF |
| 505-LTC7821IUH#PBF-ND | LTC7821IUH#PBF |
| LTC7821IUH#TRPBF-ND | LTC7821IUH#TRPBF |
| 505-LTM4654IY#PBF-ND | LTM4654IY#PBF |
| 505-LTM4654EY#PBF-ND | LTM4654EY#PBF |