Multi-Output DC/DC Regulator

MC34VR500

The MC34VR500 power management solution for network processor systems is a high-efficiency, quad buck regulator with up to 4.5 A output and five user-programmable LDOs.

  • With four buck regulators and five LDO output channels, the MC34VR500 powers more than the network processor, significantly reducing design complexity and the overall bill of materials.
  • Highly integrated MC34VR500 output voltage, frequency and turn-on sequence is user programmable using I2C.
  • Incorporated into multiple QorIQ® LS1 networking communications processor reference platform, providing platform-level solutions from a single supplier to enable faster time to market and reduced engineering effort.

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Block Diagram

MC34VR500 Multi-Output DC/DC Regulator

MC34VR500 Multi-Output DC/DC Regulator
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Features

System Features

  • Optimized to work with QorIQ® LS102x communications processors (LS1020A, LS1021A, LS1022A)
  • Vin = 3.3 Vbus (2.8 V to 4.5 V supply)
  • High full load efficiency with 91% peak
  • High Integration
    • Four independent buck converters
    • Five user-programmable LDOs
    • DDR Reference
    • Power control logic with processor interface and event detection
  • User Programmability
    • Customizable preprogrammed output voltages, sequencing or timing available
    • Dynamic regulator control of voltage, current limit and frequency via I2C
    • Forced PWM / PFM or APS operation
  • High power 8 x 8 mm QFN wettable flank package

Key Parametrics

  • MCU Supported
    LS1020A, LS1021A, LS1022A, LS1023A, LS1024A, LS1028, LS1043, LS1043/23A, LS1046A, LX2160, T1013, T1023, T1023/13
  • Output Current (A)
    4.5
  • Number of Buck Regulators
    4
  • Number of LDO
    5
  • Interface and Input Control
    I2C

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