ZHCSIN4B August 2018 – June 2021 LM5146-Q1
PRODUCTION DATA
請參考 PDF 數據表獲取器件具體的封裝圖。
The design procedure for an LM5146-Q1 based regulator for a given application is streamlined by using the LM5146-Q1 Quickstart Calculator available as a free download, or by availing of TI's WEBENCH? Power Designer. Such tools are complemented by the availability of LM5145 and LM5146-Q1 evaluation module (EVM) designs, numerous PSPICE models, as well as several LM5146-Q1 reference designs populated in the TI Designs reference design library.
The selected buck converter powertrain components are cited in Table 9-6, and many of the components are available from multiple vendors. The MOSFETs in particular are chosen for both lowest conduction and switching power loss, as discussed in detail in Section 9.1.2.4.
The current limit setpoint in this design is set at 19 A based on the resistor RILIM and the 6-mΩ RDS(on) of the low-side MOSFET (typical at TJ = 25°C and VGS = 7.5 V). This design uses a low-DCR, metal-powder inductor, and all-ceramic output capacitor implementation.
| REFERENCE DESIGNATOR | QTY | SPECIFICATION | MANUFACTURER | PART NUMBER |
|---|---|---|---|---|
| CIN | 6 | 4.7 μF, 100 V, X7S, 1210, ceramic, AEC-Q200 | TDK | CGA6M3X7S2A475K200 |
| Murata | GCM32DC72A475KE02L | |||
| Taiyo Yuden | HMK325C7475MMHPE | |||
| COUT | 5 | 47 μF, 6.3 V, X7R, 1210, ceramic, AEC-Q200 | Murata | GCM32ER70J476KE19L |
| Taiyo Yuden | JMK325B7476KMHTR | |||
| 47 μF, 6.3 V, X7S, 1210, ceramic, AEC-Q200 | TDK | CGA6P1X7S0J476M | ||
| LF | 1 | 3.3 μH, 6.25 mΩ, 19 A, 10.85 × 10.0 × 5.2 mm, AEC-Q200 | Cyntec | VCHA105D-3R3M |
| 3.3 μH, 5.8 mΩ, 28.6 A, 10.5 × 10.0 × 6.5 mm, AEC-Q200 | TDK | SPM10065VTT-3R3M-D | ||
| 3.3 μH, 6.0 mΩ, 17 A, 10.9 × 10.0 × 6.0 mm, AEC-Q200 | Panasonic | ETQP6M3R3YLC | ||
| Q1 | 1 | 100 V, 22 mΩ, MOSFET, SON 5 × 6, AEC-Q101 | Onsemi | NVMFS6B25NL |
| Q2 | 1 | 100 V, 6 mΩ, MOSFET, SON 5 × 6, AEC-Q101 | Onsemi | FDWS86068-F085 |
| U1 | 1 | Wide VIN synchronous buck controller, AEC-Q100 | Texas Instruments | LM5146QRGYRQ1 |