6-Phase, D-CAP+™ Step-Down VR12.x Server CPU VCORE  - TPS53661

TPS53661 (ACTIVE)

6-Phase, D-CAP+™ Step-Down VR12.x Server CPU VCORE

 

Special Note

For a detailed datasheet and other design support tools please contact VR@list.ti.com.

Description

The TPS53661 is a 6-Phase VR12.5/VR12 SVID compliant PWM controller with built-in PMBus interface to power the latest Intel CPU and DDR memory used in server systems. It supports advanced PMBus communication interface for device configurations and system telemetries. It also offers external pinstrapping option for configuration to increase programming flexibility.

The TPS53661 employs advanced control architecture D-CAP+ together with state-of-the-art non-linear control schemes (USR and OSR) to address stringent load transient conditions in modem microprocessors. Its Auto-Phase-Balance feature fundamentally solves beat frequency oscillation issues in high-frequency transient scenarios and ensures perfect phase current balance under any frequency spectrum. Such benefits enable less output capacitance and higher system reliability in operation.

The TPS53661 uses internal current sensing element from TI's proprietary Smart Power Stage (CSD95372B) to achieve industry benchmark current monitoring accuracy. Its internal control scheme has the intelligence to perform Dynamic Phase Shedding based on load current condition with programmable thresholds. This feature optimizes the efficiency across the entire load range with seamless transitions.

The TPS53661 incorporates all the necessary protection features with programmable thresholds through PMBus or pinstrapping. These protection features include UVLO, over-current, over-voltage, under-voltage and over-temperature. The advanced PMBus command set has the telemetry capability to report input and output voltage/current/power, temperature, and all fault conditions.

The TPS53661 is packaged in a space-saving and thermally enhanced WQFN 5x5-40L package and operates from -10 degC to 105degC.

Features

  • Intel® VR12.x Platform Serial VID (SVID) Compliant
  • 1-, 2-, 3-, 4-, 5- or 6-Phase Operation
  • Full VR12.5 Platform Server Feature Set Including Digital Current Monitor and VR_Fault
  • Supports VR12.0/VR12.5 Platform Single Output
  • 8-Bit DAC with 0.5-V to 2.5-V Output Range
  • Optimized Efficiency at Light and Heavy Loads
  • 8 Independent Levels of Overshoot Reduction (OSR) and Undershoot Reduction (USR)
  • Driverless Configurations for Efficient High- Frequency Switching
  • Fully Compatible with TI Smart Power Stages
  • Accurate, Adjustable Voltage Positioning
  • 300-kHz to 1-MHz Frequency Selections With Closed-loop Frequency Control
  • Patented AutoBalance™ Phase Balancing
  • Selectable 16-Level-Per-Phase Current Limit
  • Dynamic Phase Shedding With Programmable Current Threshold
  • PMBus™ System Interface for Telemetry of Voltage, Current, Power, Temperature, and Fault Conditions
  • Programmable VID by PMBus
  • Disable SVID by PMBus for DDR Mode
  • Programmable Load Line by PMBus
  • Configurable With Non-Volatile Memory (NVM) or Resistor Pin Strap
  • Conversion Voltage Range: 4.5 V to 17 V
  • Small 5 mm × 5 mm, 40-Pin QFN Package

Parametrics Compare all products in Processor V-Core Buck Controller

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Platform
Number of Phases
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Special Features
Iq (Typ) (mA)
Operating Temperature Range (C)
Package Group
Approx. Price (US$)
Rating
TPS53661 TPS53631 TPS53640 TPS53640A TPS53641
4.5    4.5    4.5    4.5    4.5   
20    20    20    20    20   
0.5    0.5    0.5    0.5    0.5   
2.5    2.5    2.5    2.5    2.5   
240    120    120    160    160   
VR12.5    VR12.5    VR12.5    VR12.5    VR12.5   
6    3    3    4    4   
1    1    1    1    1   
300    300    300    300    300   
1000    1000    1000    1000    1000   
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Light Load Efficiency
PMBus
Phase Interleaving
Power Good
Pre-Bias Start-Up
Remote Sense
SVID
UVLO Adjustable
Voltage Margining   
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Light Load Efficiency
PMBus
Phase Interleaving
Power Good
Pre-Bias Start-Up
Remote Sense
SVID
Synchronous Rectification
UVLO Adjustable
Voltage Margining   
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Light Load Efficiency
PMBus
Phase Interleaving
Power Good
Pre-Bias Start-Up
Remote Sense
SVID
Synchronous Rectification
UVLO Adjustable
Voltage Margining   
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Light Load Efficiency
PMBus
Phase Interleaving
Power Good
Pre-Bias Start-Up
Remote Sense
SVID
Synchronous Rectification
UVLO Adjustable
Voltage Margining   
Adjustable Current Limit
Dynamic Voltage Scaling
Enable
Light Load Efficiency
PMBus
Phase Interleaving
Power Good
Pre-Bias Start-Up
Remote Sense
SVID
Synchronous Rectification
UVLO Adjustable   
10    10    10    10    10   
-10 to 105    -10 to 105    -10 to 105    -10 to 105    -10 to 105   
WQFN    WQFN    WQFN    WQFN    WQFN   
3.80 | 1ku    2.80 | 1ku    2.80 | 1ku    3.10 | 1ku    3.30 | 1ku   
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