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Announcement: Introducing HL8545/G: Quad-Channel 50 mΩ High-Side Switch for Advanced Automotive Applications


The HL7227 is a dual phase, up to 98% efficiency and 10V/6A maximum output power switched capacitor down conversion solution. This architecture and the integrated FETs are optimized to enable a 50% duty cycle under CP mode. The CP_FWD allows output voltage VOUT is around half of input voltage WPC/PMID, and input current to be half the current delivered to the output, reducing the losses over the input power cable as well as limiting the temperature rise in the application. The CP_REV allows output voltage WPC/PMID is around twice of input voltage VOUT and output current to be half of input current. The dual-phase architecture reduces the input cap requirements as well as reducing the input voltage ripple.

Besides the CP mode, the HL7227 also has BP mode. The BP_FWD allows WPC/PMID forwardly passing through internal power FETs to VOUT without any conversion. The BP_REV allows VOUT reversely passing through internal power FETs to WPC/PMID without any conversion. In between PMID and VOUT, the device allows loading current up to 5A. In between WPC and VOUT, the device allows loading current up to 3.0A. The HL7227 also supports BP and CP modes switch automatically in forward direction. The switch mode threshold is configurable.

For more detailed description of the device, please download a product brief.



  • 22V Max operational input voltage with 26V tolerance for CAP divider 2:1 mode
  • 10V Max operational input voltage with 16V tolerance for CAP divider 1:2 mode
  • 11V Max operational output voltage for CAP divider 2:1 mode
  • 13V Max operation output voltage for bypass mode
  • 98% Efficient at 10V/3A output
  • 97.5% Efficient at 10V/4.5A output
  • Dual input supply ports WPC or PMID
  • Charge pump mode (CP mode)
    • CAP divider 2:1 mode (CP_FWD)
    • Voltage double mode (CP_REV)
    • Up to 6A output under CP_FWD
    • Up to 3A output under CP_REV
  • Dual phase switched capacitor architecture optimized for 50% duty cycle under CP mode
  • 200 kHz to 1000 kHz switching frequency
  • Bypass mode (BP mode)
    • Up to 3.0A capability between VOUT and WPC
    • Up to 5A capability between VOUT and PMI

Block Diagram

HL7227 - HMI Main Photo

For more information or a full datasheet request, please contact the factory at

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