TPS53631 3-Phase, D-CAP+TM Step-Down VR12.x Server CPU Vcore | TI.com

TPS53631
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3-Phase, D-CAP+TM Step-Down VR12.x Server CPU Vcore

3-Phase, D-CAP+TM Step-Down VR12.x Server CPU Vcore - TPS53631
Datasheet
 

Special Note

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

Description

The TPS53631 is a 3-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 an external pinstrapping option for configuration to increase programming flexibility.

The TPS53631 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 enables less output capacitance and higher system reliability in operation.

The TPS53631 uses an 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 TPS53631 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 TPS53631 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-, or 3-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

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Number of Phases Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Control mode
TPS53631 Order now 4.5     20     0.5     2.5     120     1     3     300     1000     10     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    
40     -10 to 105     Catalog     WQFN | 40     Controller     D-CAP+    
TPS53640 Order now 4.5     20     0.5     2.5     120     1     3     300     1000     10     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    
40     -10 to 105     Catalog     WQFN | 40     Controller     D-CAP+    
TPS53640A Order now 4.5     20     0.5     2.5     160     1     4     300     1000     10     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    
40     -10 to 105     Catalog     WQFN | 40     Controller     D-CAP+    
TPS53641 Order now 4.5     20     0.5     2.5     160     1     4     300     1000     10     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    
40     -10 to 105     Catalog     WQFN | 40     Controller     D-CAP+    
TPS53661 Order now 4.5     20     0.5     2.5     240     1     6     300     1000     10     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    
40     -10 to 105     Catalog     WQFN | 40