The TPS53015DGS device is a single, adaptive on-timeD-CAP2 mode synchronous buck controller. The device enablessystem designers to complete the suite of various end equipment power bus regulators with costeffective low external component count and low standby current solution. The main control loop forthe TPS53015DGS uses the D-CAP2 mode control which provides a very fast transientresponse with no external compensation components. The adaptive on-time control supports seamlesstransition between PWM mode at higher load condition and Eco-mode operation at light load. Eco-mode operation allowsthe device to maintain high efficiency during lighter load conditions. The device is also able toadapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP andultra-low ESR ceramic capacitors. The device provides convenient and efficient operation with inputvoltages from 4.5 V to 28 V and output voltage from 0.77 V to 7 V.
The TPS53015DGS is available in the 3-mm × 3-mm 10-pin VSSOP (DGS)package and is specified for an ambient temperature range of –40°C to 85°C.
Feature
- D-CAP2 mode control
- Fast transient response
- No external parts required for loop compensation
- Compatible with ceramic output capacitors
- High initial reference accuracy (±1%)
- Wide input voltage 4.5 V to 28 V
- Output voltage 0.77 V to 7 V
- Low-side RDS(on) Loss-less current sensing
- Fixed soft-start time: 1.4 ms
- Non-sinking pre-biased soft start
- Switching frequency: 500 kHz
- Cycle-by-cycle overcurrent limiting control
- Auto-Skip Eco-Mode for high efficiency at light load
- Power-good output
- OCL/OVP/UVP/UVLO/TSD protections
- Adaptive gate drivers with integrated boost PMOS switch
- Thermally compensated OCP, 4000 ppm/°C
- 10-Pin VSSOP
