9.1.1.1 Setting Boost Switching and PWM Dimming Frequencies
Boost switching and PWM dimming frequencies can be set via EEPROM when BOOST_FSET_EN = 0 and PWM_FSET_EN = 0. Available options are shown in Table 11 and Table 12.
Table 11. Configuring Boost Switching Frequency via EPROM
| BOOST_FSET_EN |
BOOST_FREQ[1:0] |
ƒSW [kHz] |
| 0 |
00 |
312 |
| 0 |
01 |
625 |
| 0 |
10 |
1250 |
| 0 |
11 |
Reserved |
Table 12. Configuring PWM Dimming Frequency via EPROM
| PWM_FSET_EN |
PWM_FREQ[3:0] |
ƒPWM [Hz] (Resolution) |
| 0 |
0000 |
4808 (11-bit) |
| 0 |
0001 |
6010 (10-bit) |
| 0 |
0010 |
7212 (10-bit) |
| 0 |
0011 |
8414 (10-bit) |
| 0 |
0100 |
9616 (10-bit) |
| 0 |
0101 |
12020 (9-bit) |
| 0 |
0110 |
13222 (9-bit) |
| 0 |
0111 |
14424 (9-bit) |
| 0 |
1000 |
15626 (9-bit) |
| 0 |
1001 |
16828 (9-bit) |
| 0 |
1010 |
18030 (9-bit) |
| 0 |
1011 |
19232 (9-bit) |
| 0 |
1100 |
24040 (8-bit) |
| 0 |
1101 |
28848 (8-bit) |
| 0 |
1110 |
33656 (8-bit) |
| 0 |
1111 |
38464 (8-bit) |