0
ACTIVE
Rating |
Catalog |
Topology |
Buck |
Iout (max) (A) |
20 |
Vin (max) (V) |
13.2 |
Vin (min) (V) |
4.5 |
Vout (max) (V) |
8 |
Vout (min) (V) |
0.8 |
Control mode |
Voltage mode |
Features |
Enable, Power good, Prebias startup |
Duty cycle (max) (%) |
72 |
Iq (typ) (A) |
0.006 |
Number of phases |
1 |
Operating temperature range (°C) |
-40 to 85 |
VSON (DRC)-10-9 mm² 3 x 3
The TPS51113 and TPS51163 are cost-optimized, feature rich, single-channel synchronous-buck controllers that operates from a single 4.5-V to 13.2-V supply and can convert an input voltage as low as 1.5 V.
The controller implements voltage mode control with a fixed 300-kHz (TPS51113) and 600-kHz (TPS51163) switching frequency. The overcurrent (OC) protection employs the low-side RDS(on) current sensing and has user-programmable threshold. The OC threshold is set by the resistor from LDRV_OC pin to GND. The resistor value is read when the over-current programming circuit applies 10 µA of current to the LDRV_OC pin during the calibration phase of the start-up sequence.
The TPS51113/TPS51163 also supports output pre-biased startup.
The strong gate drivers with low deadtime allow for the utilization of larger MOSFETs to achieve higher efficiency. An adaptive anti-cross conduction scheme is used to prevent shoot-through between the power FETs.
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