SLUUCA9A September 2020 – April 2021 TPS546B24A
Table 2-1 lists the electrical performance specifications in room temperature (20 to 25°C). Characteristics are given for an input voltage of VIN = 12 V, unless otherwise specified.
Parameter | Test Conditions | MIN | TYP | MAX | Unit |
---|---|---|---|---|---|
Input Characteristics | |||||
Input voltage range, VIN | 5 | 12 | 18 | V | |
Full load input current | IOUT = 20 A | 2.24 | A | ||
Full load input current | VIN = 5 V, IOUT = 20 A | 5.3 | A | ||
No load input current | IOUT = 0 A, switching enabled | 65 | mA | ||
Enable switching threshold | Set by default resistor divider, JP4 pins 3 and 4 shorted |
4.7 | V | ||
Disable switching threshold | Set by default resistor divider, JP4 pins 3 and 4 shorted | 4.22 | V | ||
Output Characteristics | |||||
Output voltage, VOUT | 1.2 | V | |||
Output load current, IOUT | 0 | 20 | A | ||
Output voltage regulation | Line Regulation: VIN = 5 V to 18 V | 0.1% | |||
Load Regulation: IOUT = 0 A to 20 A | 0.1% | ||||
Output voltage ripple | IOUT = 20 A | 8 | mVpp | ||
Output voltage undershoot | IOUT = 5-A to 15-A step at 10 A/µs | 40 | mV | ||
Output voltage overshoot | IOUT = 15-A to 5-A step at 10 A/µs | 40 | mV | ||
Output overcurrent fault threshold | Phase current limit setting programmed by MSEL2 | 26 | A | ||
Systems Characteristics | |||||
Switching frequency | Programmed by MSEL1 | 650 | kHz | ||
Full load efficiency, VOUT(1) | IOUT = 20 A | 89.5% | |||
Operating case temperature | IOUT = 20 A, 10 minute soak | 52.3 | °C | ||
Loop bandwidth | IOUT = 20 A | 37 | kHz | ||
Phase margin | 75 | ° | |||
PMBus Interface and Pin-Strapping | |||||
PMBus address | Programmed by NVM and ADRSEL | 36 | Decimal | ||
Voltage reference | Default setting of VOUT_COMMAND programmed by VSEL | 1.2 | V | ||
Soft-start time (TON_RISE) | Default setting of TON_RISE programmed by MSEL2 | 3 | ms |