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TPS51116

Texas Instruments
Part Number TPS51116
Manufacturer Texas Instruments
Description Synchronous Buck Controller
Published Jun 19, 2020
Detailed Description Product Folder Order Now Technical Documents Tools & Software Support & Community TPS51116 SLUS609J – MAY 2004 – RE...
Datasheet PDF File TPS51116 PDF File

TPS51116
TPS51116

Overview
Product Folder Order Now Technical Documents Tools & Software Support & Community TPS51116 SLUS609J – MAY 2004 – REVISED JANUARY 2018 TPS51116 Complete DDR, DDR2, DDR3, DDR3L, LPDDR3 and DDR4 Power Solution Synchronous Buck Controller, 3-A LDO, Buffered Reference 1 Features •1 Synchronous Buck Controller (VDDQ) – Wide-Input Voltage Range: 3.
0-V to 28-V – D−CAP™ Mode with 100-ns Load Step Response – Current Mode Option Supports Ceramic Output Capacitors – Supports Soft-Off in S4/S5 States – Current Sensing from RDS(on) or Resistor – 2.
5-V (DDR), 1.
8-V (DDR2), Adjustable to 1.
5-V (DDR3), 1.
35-V (DDR3L), 1.
2-V (LPDDR3 and DDR4) or Output Range 0.
75-V to 3.
0-V – Equipped with Powergood, Overvoltage Protection and Undervoltage Protection • 3-A LDO (VTT), Buffered Reference (VREF) – Capable to Sink and Source 3 A – LDO Input Available to Optimize Power Losses – Requires only 20-μF Ceramic Output Capacitor – Buffered Low Noise 10-mA VREF Output – Accuracy ±20 mV for both VREF and VTT – Supports High-Z in S3 and Soft-Off in S4/S5 – Thermal Shutdown 2 Applications • DDR/DDR2/DDR3/DDR3L/LPDDR3/DDR4 Memory Power Supplies • SSTL-2, SSTL-18, SSTL-15 and HSTL Termination 3 Description The TPS51116 provides a complete power supply for DDR/SSTL-2, DDR2/SSTL-18, DDR3/SSTL-15, DDR3L, LPDDR3 and DDR4 memory systems.
It integrates a synchronous buck controller with a 3-A sink/source tracking linear regulator and buffered low noise reference.
The device offers the lowest total solution cost in systems where space is at a premium.
The synchronous controller runs fixed 400kHz, pseudo-constant frequency PWM with an adaptive on-time control that can be configured in DCAP™ Mode for ease of use and fastest transient response or in current mode to support ceramic output capacitors.
The 3-A sink/source LDO maintains fast transient response only requiring 20-μF (2 × 10 μF) of ceramic output capacitance.
In addition, the LDO supply input is available externally to significantly reduce the ...


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