ZHCSSM3 July 2024 TPS546E25
ADVANCE INFORMATION
下面显示了 MSEL2 的引脚配置表。下表中 GAIN（GAIN1、GAIN2 或 GAIN3）和 RAMP（RAMP1 或 RAMP2）的引脚配置选项可在寄存器 COMP 中进行更改。通过设置(D8h) PIN_DETECT_OVERRIDE中的 OVRD_RAMP 和 OVRD_GAIN 位，可以用 COMP 的 NVM 值覆盖 RAMP 和 GAIN 的 MSEL2 编程
GAIN 和 RAMP 的默认值为：
| 电阻器 (kΩ) | 开关频率 (FSW) (kHz) | GAIN | 斜坡 |
|---|---|---|---|
| < 1.78 | 600 | GAIN1 | RAMP1 |
| 2.21 | RAMP2 | ||
| 2.74 | GAIN2 | RAMP1 | |
| 3.32 | RAMP2 | ||
| 4.02 | GAIN3 | RAMP1 | |
| 4.87 | RAMP2 | ||
| 5.9 | 800 | GAIN1 | RAMP1 |
| 7.32 | RAMP2 | ||
| 9.09 | GAIN2 | RAMP1 | |
| 11.3 | RAMP2 | ||
| 14.3 | GAIN3 | RAMP1 | |
| 18.2 | RAMP2 | ||
| 22.1 | 1000 | GAIN1 | RAMP1 |
| 26.7 | RAMP2 | ||
| 33.2 | GAIN2 | RAMP1 | |
| 40.2 | RAMP2 | ||
| 49.9 | GAIN3 | RAMP1 | |
| 60.4 | RAMP2 | ||
| 76.8 | 1400 | GAIN1 | RAMP1 |
| 102 | RAMP2 | ||
| 137 | GAIN2 | RAMP1 | |
| 174 | RAMP2 | ||
| 243 | GAIN3 | RAMP1 | |
| > 412 | RAMP2 |
| 电阻器 (kΩ) | 开关频率 (FSW) (kHz) | 过流限制 (OCL) (A) |
|---|---|---|
| < 1.78 | 600 | 100% |
| 2.21 | ||
| 2.74 | 80% | |
| 3.32 | ||
| 4.02 | 60% | |
| 4.87 | ||
| 5.9 | 800 | 100% |
| 7.32 | ||
| 9.09 | 80% | |
| 11.3 | ||
| 14.3 | 60% | |
| 18.2 | ||
| 22.1 | 1000 | 100% |
| 26.7 | ||
| 33.2 | 80% | |
| 40.2 | ||
| 49.9 | 60% | |
| 60.4 | ||
| 76.8 | 1400 | 100% |
| 102 | ||
| 137 | 80% | |
| 174 | ||
| 243 | 60% | |
| > 412 |