SLVUBZ2A September 2020 – December 2020 LM5127-Q1
Table 7-1 indicates the components that must be changed from the default configuration to configure channel 1 as a buck controller. These changes result in channel 1 producing a 5 V output, capable of providing 5 A of output current.
| Component | Action | Comment |
|---|---|---|
| Feedback network configuration | ||
| R10 | Do not populate | |
| R16 | Do not populate | |
| R20 | Do not populated | |
| R15 | Populate with 1 kΩ | Configures VOUT1 to be 5 V |
| BMOUT configuration | ||
| R12 | Populate with 100 kΩ | |
| R22 | Populate with 30.1 kΩ | Sets BMIN_PRG to ~ 6.5 V |
| R13 | Do not populate | |
| R14 | Populate with 20 kΩ | |
| Compensation configuration | ||
| R27 | 4.99 kΩ | Same component as R56 |
| C26 | 10 nF | Same component as C54 |
| C24 | 220 pF | Similar component as C53 |
| Power-train component configuration | ||
| D1 | Populate | Similar component as D3 |
| R1 | 5 mΩ | Similar component as R47 |
| L1 | 2.2 μH | Same component as L2 |
| C7, C8, C9, C10, C11 | 22 μF | Similar component as C43 |
| C1 | Do not populate | |
| C6 | 100 pF | Similar component as C49 |