TPS54116-Q1 Automotive DDR Power Solution with 4-A, 2-MHz VDDQ DC/DC Converter, 1-A VTT LDO and VTTREF | TI.com

TPS54116-Q1 (ACTIVE)

Automotive DDR Power Solution with 4-A, 2-MHz VDDQ DC/DC Converter, 1-A VTT LDO and VTTREF

Automotive DDR Power Solution with 4-A, 2-MHz VDDQ DC/DC Converter, 1-A VTT LDO and VTTREF - TPS54116-Q1
 

Description

The TPS54116-Q1 device is a full featured 6-V, 4-A, synchronous step down converter with two integrated MOSFETs and 1-A sink/source double data rate (DDR) VTT termination regulator with VTTREF buffered reference output.

The TPS54116-Q1 buck regulator minimizes solution size by integrating the MOSFETs and reducing inductor size with up to 2.5-MHz switching frequency. The switching frequency can be set above the medium wave radio band for noise sensitive applications and is synchronizable to an external clock. Synchronous rectification keeps the frequency fixed across the entire output load range. Efficiency is maximized through integrated 25-mΩ low-side and 33-mΩ high-side MOSFETs. Cycle-by-cycle peak current limit protects the device during an overcurrent condition and is adjustable with a resistor at the ILIM pin to optimize for smaller inductors.

The VTT termination regulator maintains fast transient response with only 2 × 10-µF ceramic output capacitance reducing external component count. The TPS54116-Q1 uses remote sensing of VTT for best regulation.

Using the enable pins to enter a shutdown mode reduces supply current to 1-µA. Under voltage lockout thresholds can be set with a resistor network on either enable pin. The VTT and VTTREF outputs are discharged when disabled with ENLDO.

Full integration minimizes the IC footprint with a small 4 mm × 4 mm thermally enhanced WQFN package.

Features

  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Single-chip DDR2, DDR3 and DDR3L Memory Power Solution
  • 4-A Synchronous Buck Converter
    • Integrated 33-mΩ High-side and 25-mΩ Low-side MOSFETs
    • Fixed Frequency Current-mode Control
    • Adjustable Frequency from 100 kHz to 2.5 MHz
    • Synchronizable to an External Clock
    • 0.6-V ±1% Voltage Reference Over Temperature
    • Adjustable Cycle-by-Cycle Peak Current Limit
    • Monotonic Start-up Into Pre-biased Outputs
  • 1-A Source/Sink Termination LDO with ±20-mV DC Accuracy
    • Stable with 2 × 10-µF MLCC Capacitor
    • 10-mA Source/Sink Buffered Reference Output Regulated to Within 49% to 51% of VDDQ
  • Independent Enable Pins with Adjustable UVLO and Hysteresis
  • Thermal Shutdown
  • –40°C to 150°C Operating TJ
  • 24-pin, 4-mm × 4-mm WQFN Package

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Parametrics Compare all products in DDR memory

 
DDR Memory Type
Control Mode
Iout VDDQ (Max) (A)
Iout VTT (Max) (A)
Iq (Typ) (mA)
Output
Vin (Min) (V)
Vin (Max) (V)
Features
Rating
Operating Temperature Range (C)
Pin/Package
TPS54116-Q1 LP2996-N LP2997 LP2998-Q1 TPS51100 TPS51200 TPS51200-Q1 TPS51206 TPS53317 TPS53317A
DDR
DDR2
DDR3
DDR3L
DDR4    
DDR
DDR2    
DDR2     DDR
DDR2
DDR3
DDR3L    
DDR
DDR2
DDR3
DDR3L
LPDDR3    
DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
DDR
DDR2
DDR3
DDR3L
DDR4
LPDDR2
LPDDR3    
Current Mode     N/A     N/A     N/A     S3
S5    
D-CAP
S3
S4/S5    
D-CAP
S3
S4/S5    
N/A     D-CAP+
S3
S4/S5    
D-CAP+    
4                      
1     1.5     0.5     1.5     3     3     3     2     6     6    
0.65     0.32     0.32     0.32     0.5     0.5     0.5     0.17     0.32     0.32    
VDDQ
VREF
VTT    
VREF
VTT    
VREF
VTT    
VREF
VTT    
VREF
VTT    
VREF
VTT    
VREF
VTT    
VREF
VTT    
VTT     VREF
VTT    
2.95     1.8     1.8     1.35     1.2     1.1     1.1     1     1     0.9    
6     5.5     5.5     5.5     3.6     3.5     3.5     3.5     6     6    
Complete Solution
Power Good
Shutdown Pin for S3    
Shutdown Pin for S3     Shutdown Pin for S3     Shutdown Pin for S3     S3/S5 Support     S3/S5 Support     S3/S5 Support     S3/S5 Support     Complete Solution     Eco Mode
Fixed PWM Mode
Power Good
Tracking/Non-Tracking Mode    
Automotive     Catalog     Catalog     Automotive     Catalog     Catalog     Automotive     Catalog     Catalog     Catalog    
-40 to 125     0 to 125     0 to 125     -40 to 125     -40 to 85     -40 to 85     -40 to 125     -40 to 85     -40 to 85     -40 to 125    
24WQFN     16WQFN
8SO PowerPAD
8SOIC    
8SO PowerPAD
8SOIC    
8SO PowerPAD     10MSOP-PowerPAD     10VSON     10VSON     10WSON     20VQFN     20VQFN    
New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS54116-Q1

  Min   Max Range
Vin  V 2.95 to 6.0V
Vout  V 0.6 to 4.5V
Iout  A ≤ 4A
Ambient Temp  °C -40 to 150°C


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