TPS51916
TPS51916 is Synchronous Buck Controller manufactured by Texas Instruments.
Features
- 1 Synchronous Buck Controller (VDDQ)
- Conversion Voltage Range: 3 V to 28 V
- Output Voltage Range: 0.7 V to 1.8 V
- 0.8% VREF Accuracy
- Selectable Control Architecture
- D-CAP™ Mode for Fast Transient Response
- D-CAP2™ Mode for Ceramic Output Capacitors
- Selectable 300 k Hz, 400 k Hz, 500 k Hz, or 670 k Hz Switching Frequencies
- Optimized Efficiency at Light and Heavy Loads with Auto-skip Function
- Supports Soft-Off in S4 and S5 States
- OCL/OVP/UVP/UVLO Protections
- Powergood Output
- 2-A LDO(VTT), Buffered Reference(VTTREF)
- 2-A (Peak) Sink and Source Current
- Buffered, Low Noise, 10-m A VTTREF Output
- 0.8% VTTREF, 20-m V VTT Accuracy
- Supports High-Z (S3) and Soft-Off (S4, S5)
- Thermal Shutdown
- 20-Pin, 3 mm × 3 mm, QFN Package
- Create a WEBENCH Design
2 Applications
- Memory Power Supplies: DDR2, DDR3, DDR3L, DDR4
- Termination: SSTL_18, SSTL_15, SSTL_135, HSTL
3 Description
The TPS51916 device provides a plete power supply for DDR2, DDR3, DDR3L, and DDR4 memory systems in the lowest total cost and minimum space. It integrates a synchronous buck regulator controller (VDDQ) with a 2-A sink and 2-A source tracking LDO (VTT) and buffered low noise reference (VTTREF).
The device employs D-CAP™ mode coupled with 300 k Hz or 400 k Hz frequencies for ease-of-use and fast transient response or D-CAP2™ mode coupled with higher 500 k Hz or 670 k Hz frequencies to support ceramic output capacitor without an external pensation circuit. The VTTREF tracks VDDQ/2 within excellent 0.8% accuracy. The VTT, which provides 2-A sink and 2-A source peak current capabilities, requires only 10-μF of ceramic capacitance. A dedicated LDO supply input is available.
The device also provides excellent power supply performance. It supports flexible power state control, placing VTT at high-Z in S3 and discharging VDDQ, VTT and VTTREF (soft-off) in S4 or S5 state. Programmable OCL with low-side MOSFET RDS(on) sensing, OVP, UVP, UVLO and thermal shutdown protections are also...
