ZHCSQY3 march 2023 TPS546D24S
PRODUCTION DATA
The MSEL1 pin programs (B1h) USER_DATA_01 (COMPENSATION_CONFIG) and (33h) FREQUENCY_SWITCH. The resistor divider ratio for MSEL1 selects the nominal switching frequency using Table 7-8:
| RESISTOR DIVIDER CODE | COMPENSATION_CONFIG (CONFIG #) | FREQUENCY_SWITCH VALUE (kHz) |
|---|---|---|
| None (No Resistor to BP1V5) | 7 - 25 (Select Values) | 550 |
| 0 | 0-15 | 275 |
| 1 | 16-31 | |
| 2 | 0-15 | 325 |
| 3 | 16-31 | |
| 4 | 0-15 | 450 |
| 5 | 16-31 | |
| 6 | 0-15 | 550 |
| 7 | 16-31 | |
| 8 | 0-15 | 650 |
| 9 | 16-31 | |
| 10 | 0-15 | 900 |
| 11 | 16-31 | |
| 12 | 0-15 | 1100 |
| 13 | 16-31 | |
| 14 | 0-15 | 1500 |
| 15 | 16-31 |
The resistor to ground for MSEL1 selects the (B1h) USER_DATA_01 (COMPENSATION_CONFIG) values to program the following voltage loop and current loop gains. For options other than the EEPROM code (MSEL1 shorted to AGND or MSEL1 to AGND resistor code 0), the Current and Voltage loop zero and pole frequencies are scaled with the programmed switching frequency. The current loop pole frequency is located at approximately the switching frequency, while the current loop zero is located at approximately 1/20 the switching frequency. The voltage loop pole is located at approximately ? the switching frequency and the voltage loop zero is located at approximately 1/100 the switching frequency.
| RESISTOR CODE | COMPENSATION (NO DIVIDER) | COMPENSATION (EVEN DIVIDER) | COMPENSATION (ODD DIVIDER) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| CONFIG # | I LOOP GAIN | V LOOP GAIN | CONFIG # | I LOOP GAIN | V LOOP GAIN | CONFIG # | I LOOP GAIN | V LOOP GAIN | |
| Short | 3 | 2 | 2 | N/A | N/A | N/A | N/A | N/A | N/A |
| Float | EEPROM | EEPROM | EEPROM | N/A | N/A | N/A | N/A | N/A | N/A |
| 0 | 7 | 3 | 1 | 0 | EEPROM | EEPROM | 16 | 5 | 0.5 |
| 1 | 8 | 3 | 2 | 1 | 2 | 0.5 | 17 | 5 | 1 |
| 2 | 9 | 3 | 4 | 2 | 2 | 1 | 18 | 5 | 2 |
| 3 | 10 | 3 | 8 | 3 | 2 | 2 | 19 | 5 | 4 |
| 4 | 12 | 4 | 1 | 4 | 2 | 4 | 20 | 5 | 8 |
| 5 | 13 | 4 | 2 | 5 | 2 | 8 | 21 | 6 | 0.5 |
| 6 | 14 | 4 | 4 | 6 | 3 | 0.5 | 22 | 6 | 1 |
| 7 | 15 | 4 | 8 | 7 | 3 | 1 | 23 | 6 | 2 |
| 8 | 17 | 5 | 1 | 8 | 3 | 2 | 24 | 6 | 4 |
| 9 | 18 | 5 | 2 | 9 | 3 | 4 | 25 | 6 | 8 |
| 10 | 19 | 5 | 4 | 10 | 3 | 8 | 26 | 7 | 0.5 |
| 11 | 20 | 5 | 8 | 11 | 4 | 0.5 | 27 | 7 | 1 |
| 12 | 22 | 6 | 1 | 12 | 4 | 1 | 28 | 7 | 2 |
| 13 | 23 | 6 | 2 | 13 | 4 | 2 | 20 | 7 | 4 |
| 14 | 24 | 6 | 4 | 14 | 4 | 4 | 30 | 7 | 8 |
| 15 | 25 | 6 | 8 | 15 | 4 | 8 | 31 | 10 | 2 |
With both the resistor to ground code and the resistor divider code, use the look-up table to select the appropriate resistors.