Resonant LCC 90 W notebook power adapter based on the L6599 and STP9NK50ZF

This demonstration board is a 90 W wide-range mains AC-DC adapter which is power factor corrected. Its electrical specifications are suitable for typical high-end portable computer power adapters. The particular benefits of this design are the very low no-load input consumption (<0.5 W) and the very high global efficiency.

The architecture is based on a two-stage approach: a front-end PFC pre-regulator based on the L6563 TM PFC controller and a downstream multi-resonant half-bridge converter that makes use of the L6599 resonant controller.

Key Features

  • Latch mode: OVP acts while VOUT > 29 VDC
  • Hiccup mode: Auto recovery with SCP
  • Dimensions (L/W/H): 132 mm / 52 mm / 22 mm
  • High output power: 90 W (4.74 A, 19 VDC)
  • Universal AC mains range: 90 VAC to 264 VAC
  • Very low standby power: less than 0.5 W at 264 V
  • Efficiency > 88% at universal AC mains range
  • Very low output noise and ripple: less than 300 m VP-P




Technical Documentation

Product Specifications
Description Version Size
DB0626 DB0626: Resonant LCC 90 W notebook power adapter based on the L6599 and STP12NM50N 1.2 91 KB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
Gerber files for STEVAL-ISC002V1 board 1.0 103 KB
Bill of Materials
Description Version Size
BOM for STEVAL-ISC002V1 board 1.0 47 KB
Schematic Pack
Description Version Size
Board schematics for STEVAL-ISC002V1 board 1.0 45 KB


License Agreement
Description Version Size
Evaluation products license agreement 1.4 128 KB
Support & Community

Sample & Buy

Part Number Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors

(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-ISC002V1 NRNDCARDIndustrialEcopack2

(**) 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.