ZHCSQY3 march 2023 TPS546D24S
PRODUCTION DATA
The resistor divider ratio for VSEL programs the (21h) VOUT_COMMAND range, (29h) VOUT_SCALE_LOOP divider, (2Bh) VOUT_MIN, and (24h) VOUT_MAX levels according to the following tables.
Select the resistor divider code that contains the desired nominal boot voltage within the range of VOUT between minimum VOUT and maximum VOUT. For voltages from 0.5 V to 1.25 V, a single resistor to ground or a resistor divider can be used.
NOMINAL BOOT VOLTAGE RANGE | RESISTOR DIVIDER CODE | ||
---|---|---|---|
MINIMUM VOUT | MAXIMUM VOUT | RESOLUTION | |
EEPROM (0.8V) | EEPROM (0.8V) | N/A | Float |
0.5 | 1.25 | 0.050 | None |
0.6 | 0.75 | 0.010 | 0 |
0.75 | 0.9 | 0.010 | 1 |
0.9 | 1.05 | 0.010 | 2 |
1.05 | 1.2 | 0.010 | 3 |
1.2 | 1.5 | 0.020 | 4 |
1.5 | 1.8 | 0.020 | 5 |
1.8 | 2.1 | 0.020 | 6 |
2.1 | 2.4 | 0.020 | 7 |
2.4 | 3.0 | 0.040 | 8 |
3.0 | 3.6 | 0.040 | 9 |
3.6 | 4.2 | 0.040 | 10 |
4.2 | 4.8 | 0.040 | 11 |
3.6 | 4.2 | 0.040 | 12 |
4.2 | 4.8 | 0.040 | 13 |
4.8 | 5.4 | 0.040 | 14 |
5.4 | 6.0 | 0.040 | 15 |
With the resistor divider code selected for the range of VOUT, select the bottom resistor code with the (21h) VOUT_COMMAND Offset and (21h) VOUT_COMMAND step from Programming VSEL.
RESISTOR DIVIDER CODE | VOUT_SCALE_LOOP | VOUT_MIN | VOUT_MAX | VOUT_COMMAND OFFSET (V) | VOUT_COMMAND STEP (V) |
---|---|---|---|---|---|
Short to AGND | 0.5 | EEPROM (0.5) | EEPROM (1.5) | EEPROM | N/A |
(0.80) | |||||
Float | 0.5 | 0.5 | 1.5 | 1.0 | N/A |
None | 0.5 | 0.5 | 1.5 | 0.50 | 0.050 |
0 | 0.5 | 0.5 | 1.5 | 0.6 | 0.010 |
1 | 0.5 | 0.5 | 1.5 | 0.75 | 0.010 |
2 | 0.5 | 0.5 | 1.5 | 0.9 | 0.010 |
3 | 0.5 | 0.5 | 1.5 | 1.05 | 0.010 |
4 | 0.25 | 1 | 3 | 1.2 | 0.020 |
5 | 0.25 | 1 | 3 | 1.5 | 0.020 |
6 | 0.25 | 1 | 3 | 1.8 | 0.020 |
7 | 0.25 | 1 | 3 | 2.1 | 0.020 |
8 | 0.125 | 2 | 6 | 2.4 | 0.040 |
9 | 0.125 | 2 | 6 | 3.0 | 0.040 |
10 | 0.125 | 2 | 6 | 3.6 | 0.040 |
11 | 0.125 | 2 | 6 | 4.2 | 0.040 |
12 | 0.125 | 2 | 6 | 3.6 | 0.040 |
13 | 0.125 | 2 | 6 | 4.2 | 0.040 |
14 | 0.125 | 2 | 6 | 4.8 | 0.040 |
15 | 0.125 | 2 | 6 | 5.4 | 0.040 |
To calculate the resistor to AGND code, subtract the (21h) VOUT_COMMAND offset from the target output voltage and divide by the (21h) VOUT_COMMAND step.