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3-phase controller with embedded drivers for the next GPU generation
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The device implements a one-to-three phases step-down controller with three integrated high current drivers in a compact 6x6 mm body package with exposed pad.

Output voltage can be selected trough serial and parallel VID up to 1.3500 V and managing D-VID with ±2 % output voltage accuracy.

The device manages serial BUS communication to program power management functionalities as well as monitoring.

The device features automatic startup phase procedure and phases self detection for safe operation.

The controller embeds 5 V LDO regulator increasing design flexibility.

Advanced IC and VRM thermal management to assure robust design and safe operation.

The controller assures fast protection against load over current and under / over voltage.

L6788A is available in VPQFN 6 x 6 mm package.

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Errata Sheet
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Key Features

  • 1, 2 or 3 selectable phase operation
  • Phases self detection
  • High current internal drivers
  • Versatile solution: serial and parallel VID for output voltage setting
  • Serial BUS interface for power manager and monitoring
  • Automatic startup phase procedure
  • Advanced IC and VRM thermal management to assure robust design and safe operation
  • 5 V LDO regulator output to increases design flexibility.
  • Adjustable and precise output voltage
  • Full differential current sense across inductor
  • Differential remote voltage sensing
  • LSLess startup to manage pre-biased output
  • Programmable over current protection
  • Adjustable switching frequency
  • Enable signal
  • VPQFN40 6x6 mm package with exposed pad

Circuit Diagram

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS6075: 3-phase controller with embedded drivers for the next GPU generation
2.2 329 KB

Publications and Collaterals


Description Version Size
3-phase DC-DC controller for cardslatest generation AMD GPUs
1.0.0 395 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeAutomotive GradeOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
L6788ANRNDVFQFPN 40 6x6x0.9Tray_-No availability reported, please contact our Sales officeEcopack2PDF
L6788ATRNRNDVFQFPN 40 6x6x0.9Tape And Reel_-Distributor reported inventory date: 2015-02-27
Distributor NameRegionStockMin. order

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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