Packaging information
| Package | Pins VQFN (RGT) | 16 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the TPS53511
- Continuous 1.5-A output current
- 4.5-V to 18-V supply voltage range
- 2-V to 18-V conversion voltage range
- DCAP2™ mode control enables fast transient response
- Low output ripple and support all MLCC output capacitor
- Skip mode for light load control
- Highly efficient integrated FETs optimized for lower duty cycle applications
- High efficiency, less than 10-µA supply current at shutdown
- Adjustable soft-start time
- Support pre-biased soft start
- 700-kHz switching frequency
- Cycle-by-cycle overcurrent limit
- Open-drain power-good indication
- Internal bootstrap switch
- Small 3-mm × 3-mm, 16-pin QFN (RGT) package
Description for the TPS53511
The TPS53511 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The device is suitable for points-of-load (POL) in computing power systems, and provides a cost-effective, low component count, low standby current solution. The main control loop for the TPS53511 uses the D-CAP2™ mode control to provide a fast transient response with no external components. The adaptive on-time control supports seamless operation between PWM mode during heavy load conditions and reduced frequency operation during light-load conditions for high efficiency.
The TPS53511 includes a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V supply input, and from 2-V to 18-V input power supply voltage. The device features an adjustable slow-start time and a power-good function. It also supports pre-biased soft start. The TPS53511 is available in a 16-pin QFN package, and is designed to operate from –40°C to 85°C.