ZHCSNB4 february 2023 LM5148
PRODUCTION DATA
Table 9-9 shows the intended input, output, and performance parameters for this design example. Reference the LM5149-Q1EVM-400 evaluation module.
| DESIGN PARAMETER | VALUE |
|---|---|
| Input voltage range (steady-state) | 15 V to 72 V |
| Min transient input voltage | 12.5 V |
| Max transient input voltage | 80 V |
| Output voltage | 12 V |
| Output current | 8 A |
| Switching frequency | 400 kHz |
| Output voltage regulation | ±1% |
| No-load standby current | 12 μA |
| Shutdown current | 2.3 μA |
| Soft-start time | 3 ms |
| REFERENCE DESIGNATOR | QTY | SPECIFICATION | MANUFACTURER | PART NUMBER |
|---|---|---|---|---|
| CIN | 4 | 4.7 μF, 100 V, X7S, 1210, ceramic | TDK | CGA6M3X7S2A475K200 |
| Murata | GCM32DC72A475KE02L | |||
| CO | 4 | 22 μF, 25 V, X7R, 1210, ceramic | TDK | CGA6P3X7R1E226M |
| Murata | GCM32EC71E226KE36 | |||
| LO | 1 | 6.8 μH, 12 mΩ, 13.3 A, 10.85 × 10.0 × 5.2 mm | Cyntec | VCHA105D-6R8MS6 |
| 6.5 μH, 10.5 mΩ, 13 A, 10.5 × 10.0 × 4.5 mm | Wurth | 784325065 | ||
| 6.8 μH, 13.3 mΩ, 21.4 A, 10.5 × 10.0 × 6.5 mm | TDK | SPM10065VT-6R8M-D | ||
| Q1 | 1 | 80 V, 19.5 mΩ, 12 nC, SON 5 × 6 | onsemi | NVMFS6H858NLT1G |
| 80 V, 23 mΩ, 11 nC, SON 5 × 6 | Infineon | IAUC28N08S5L230 | ||
| Q2 | 1 | 80 V, 8.8 mΩ, 25 nC, SON 5 × 6 | onsemi | NVMFS6H848NLT1G |
| 80 V, 9.6 mΩ, 22 nC, SON 5 × 6 | Infineon | IAUC50N08S5L096 | ||
| RS | 1 | Shunt, 5 mΩ, 0508, 1 W | Susumu |
KRL2012E-M-R005-F-T5 |
| U1 | 1 | LM5148 80-V synchronous buck controller | Texas Instruments | LM5148RGYR |