TPS53640A 4-Phase, D-CAP+™ Step-Down Controller with PMBus | TI.com

TPS53640A
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4-Phase, D-CAP+™ Step-Down Controller with PMBus

 

Special Note

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

Description

The TPS53640A is a 4-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 TPS53640A 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 TPS53640A uses inductor DCR as current sensing element and can work with variety of power stage options, including TI Smart Power Stage, DrMOS or discrete MOSFET + driver. 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 TPS53640A incorporates all 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 TPS53640A 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
  • 4-Phase Operation
  • Full VR12.5 Platform Server Feature Set Including Digital Current Monitor and VR_Fault
  • Supports VR12.0 Platform Single Output
  • 8-Bit DAC with 0.5-V to 2.5-V Output Range
  • Dynamic Phase Shedding with Programmable Current Thresholds to Optimize the Efficiency at Light or Heavy Loads
  • 8 Independent Levels of Overshoot Reduction (OSR) and Undershoot Reduction (USR)
  • Driverless Configurations for Efficient High- Frequency Switching
  • Supports TI NexFET™ MOSFET Power Stages
  • Supports Both Zero Loadline and Accurate Loadline Applications
  • Frequency Selection: 300-kHz to 1-MHz
  • Patented AutoBalance Phase Balancing
  • Per-Phase Current Limit
  • PMBus™ System Interface for Telemetry of Voltage, Current, Power, Temperature, and Fault Conditions
  • Programmable VID and Loadline Regulation via PMBus Interface
  • 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
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+    
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+    
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