Primarion VR Chipset

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Primarion VR Chipset
PX3520 Integrated Power Stage
PX3538/9 Digital Controllers

• 30A Power Stage
• Integrated control FET and drivers
• Integrated current and temp sensor
• Discrete sync FET
• Customize for each application
• CSP package
• Lead or lead-free available

• Up to 2 MHz switching
• 1 to 6 phases
• Reduced output cap
• 100A, 1000A/us with 500uF MLCC
• Current sense calibration
• Built-in cal on startup
• Digital temperature compensation
• I2C interface
• Monitor I,V, T, faults
• Real-time voltage control
• Use with discrete or integrated power stage
• 3.3V supply, QFN package

PX3511 Driver

• High performance FET Driver
• 3.3V Logic compatible
• A Version
• Variable low-side drive
• B Version
• Variable low and high-side driver

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PX3538 6-phase ControllerBlock Diagram

• Integrated voltage and current digitizers
• Programmable digital control loop
• Programmable fault settings
• Integrated non-volatile memory

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PX3525 Integrated Power Stage

• Integrated high and low-side current sensor
• Process and temp insensitive
• Pulse-by-pulse OCP
• Integrated temp sensor
• Low RDSon FETs
• 15 mOhm high-side
• 2 mOhm low-side
• 30A per phase
• 20 duty factor
• CSP package

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Low Cost VR Solutions

• VR11 Applications
• 0.8 to 1.6V
• 1200A/us
• 6-phase digital controller
• Self calibrating current sense
• Low output cap technology
• I2C bus for monitoring control
• Discrete drivers and FETs

Discrete 2U VRM solution 82 Efficiency at 1.25V
130A
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High Current Density VR Solutions

• VR11 Applications
• 0.8 to 1.6V
• 1200A/us
• 6-phase digital controller
• Self calibrating current sense
• Low output cap technology
• I2C bus for monitoring control
• Integrated Power Stage FET

Integrated VRD Solution 87 Efficiency at 1.2V
130A
Integrated 1U VRM solution 84 Efficiency at
1.25V 130A
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VR Power Code User Interface

• Easy to use GUI
• Runs on any PC with USB interface
• Configure system parameters
• Monitor telemetry and faults
• Fine tune feedback loop and set fault trip
  thresholds

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PX3542 Graphics Controller Features

• 4- to 6-phase operation
• Maximum current 150A
• Output voltage 0.5V - 1.6V
• Switching frequency 100 kHz to 2 MHz
• Internal high precision voltage reference
• ?10mV voltage setpoint accuracy
• Startup and maximum voltages set through external
  resistor (tamper resistant)
• 2-bit VID input for final voltage set
• Programmed in NVM, vmax resistor limits max
  output
• Plug and play extra phases
• Driver detect prior to soft-start disables
  unpopulated phases
• Phase dropping based on current balance

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PX3542 Graphics Controller Features

• Programmable current balance offset (/- 10) for
  thermal balancing
• Digitally programmable loadline and loop
  compensation
• Digital temperature sensor compensation
• Active Transient Response (ATR) enables meeting
  transient requirements with reduced output
  capacitance
• I2C-bus interface for monitoring, control and
  configuration
• Current Voltage readout
• Query Fault details (out of balance channel
  etc.)
• Internal NVM to store custom configurations with
  eight programmable active voltage position (AVP)
  system configurations
• RoHS compliant 48-ld QFN package

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PX3542 Fault Detection Capability

• Extensive fault detection capability with two
  user configurable output fault pins
• Input Under-voltage
• Output Under-/Over-voltage
• Per Phase and Total Output Current
• Current balance
• Auxiliary 12V supply
• (both fault and return reported)
• Multiple Internal and External Temperature Limits

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PX3542 Graphics Application Example
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Low Cost Graphics Solutions

• High End Graphics Applications
• 0.5V to 1.6V
• up to 2MHz switching freq
• 150A max
• 6-phase digital controller
• Self calibrating current sense
• Low output cap technology
• I2C bus for monitoring control
• Auto driver detect
• Auto current balance phase drop
• Discrete drivers and FETs

Discrete VRD solution 84 Efficiency at 1.25V
130A
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GPU Power Code User Interface

• Easy to use GUI
• Runs on any PC with USB interface
• Configure system parameters
• Monitor telemetry and faults
• Fine tune feedback loop and set fault trip
  thresholds

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Di-POLTM PX7510 Block Diagram
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Di-POLTM PX7510 Application ExampleSingle-Phase
POL Converter