STDES-70WRXWLC

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70 W wireless charger receiver reference design

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Product overview

Description

The STDES-70WRXWLC is a reference design that implements the Qi-compliant inductive wireless power receiver. The solution supports the Qi EPP compliant mode up to 15 W. With the proprietary ST super charge (STSC) protocol, the solution delivers an output power of up to 70 W.

The STDES-70WRXWLC is based on the STWLC98 high-integration, high-performance wireless power receiver system-on-chip, with an integrated 27 V low-loss synchronous rectifier and a low drop-out linear regulator. The device can also operate as a wireless transmitter up to 15 W (coil-dependent and input voltage).

The STDES-70WRXWLC is a fully assembled kit developed for performance evaluation only, not available for sale.

  • All features

    • Qi v1.2.4 and v1.3 compliant wireless charging receiver reference design
    • Supports the Qi EPP compliant mode up to 15 W
    • Supports up to 70 W power receiver with the ST proprietary protocol (STSC)
    • Adaptive rectifier configuration (ARC) mode for spatial freedom
    • Overvoltage, overcurrent, and thermal protection
    • Supports 15 W output power in TX mode
    • Coil Q-factor measurement for FOD in TX mode
    • Full bridge rectifier:Key product: STWLC98 wireless charging receiver SoCOutput: up to 3.5 A DCThe high efficiency full bridge rectifier converts the receiver coil AC output to DC
    • Main regulator:Key product: STWLC98 wireless charging receiver SoCInput: DC output of the full bridge rectifierOutput: regulated DC output up to 20 V, 3.5 A
    • Embedded DC-DCKey product: PM6644 step-down regulatorGenerates 5 V power supply from up to 20 V STWLC98 output, to replace the STWLC98 embedded 5 V auxiliary LDO and get a better thermal performance
    • Embedded charging management and graphic user interface (GUI)Key product: STM32F072CBT6 Arm Cortex-M0 MCUAutomatic RX/TX modes detection and switchAutomatic/manual output voltage boost following STSC in RX modeSTSC based proprietary communicationEmbedded GUI and buttons

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STDES-70WRXWLC
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- Industrial - Yes

STDES-70WRXWLC

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Material Declaration**:

Marketing Status

Active

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-

Grade

Industrial

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-

(**) The Material Declaration forms available on st.com 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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Part Number:

STDES-70WRXWLC

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Core Product:

STWLC98JR, PM6644TR, STM32F072CBT6

Board production status:

Not for sale

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors