ST Power Solutions: Wireless Charging & USB Type-C/Power Delivery

ST enables the Wireless Charging World

STMicroelectronics offers comprehensive solutions for wireless charging, categorized into:

Wearable Solutions
Consumer & Industrial Solutions
Dual Mode TRx
Multi-Coil Solutions

Wearable Solution

Reference designs for wireless charging, supporting 1-2.5W Watt Wireless Delivery.

Transmitter: STWBC-WA 2.5W STEVAL-ISB045V1

2-layer PCB and single-side placement
20mm coil

Receiver: STWLC30 2.5W STEVAL-ISB043V1

3-Layer PCB and single-side placement
Application area 10x6mm
26mm coil

The transmitter utilizes a Full-Bridge topology, powered by 5V input (e.g., USB), supporting up to 2.5W with a 20mm coil and scalable down to 1W.

The receiver offers 5V output voltage, with a space-saving solution of 6x10mm and 1mm total thickness. It features a 26mm coil with a maximum impedance of 4mm @ 2.5W and output leakage <1uA, achieving 67% system efficiency with a 1mm gap.

Consumer & Industrial Solution

Solutions for 5W and 15W Transmitter and Receiver Kits.

5W Transmitter and Receiver Kit

STWBC 5W A11 STEVAL-ISB027V1: 2-Layer PCB, 3mV standby consumption, Ping and FOD always active.
STWLC33 – 15W / 5W Qi / AirFuel STEVAL-ISB042V1: 4-Layer PCB, Qi 1.2.3 and AirFuel Inductive certified, 42x42mm coil, BPP/EPP RX auto-switch.

15W Transmitter Reference Board (STWBC-EP)

IC: STWBC-EP, MP-A10 Design, Qi 1.2.3 Certified.
Supports BPP and EPP (5W and 15W).
Features Foreign Object Detection (FOD).
5-12V input voltage range.
Half-Bridge topology, Voltage/Frequency Control.
Graphical Interface for testing.

15W RX STWLC33 – STEVAL-ISB042V1

Qi/AirFuel Inductive Certified Wireless Receiver with Transmit capability.
Up to 15W output power in RX mode and 5W in TX mode.
Integrated high efficiency synchronous rectifier, low drop regulator.
Total system efficiency up to 80%.
Features a 32-bit ARM Cortex microcontroller, 10-bit A/D converter, configurable GPIOs, 5V LDO, overvoltage clamp protection, HW FSK and ASK demodulators, I2C interface.

STWLC33 Dual Mode

Multi Mode Qi/Airfuel 15W Wireless Power Receiver with Tx function.

STWLC33 operates as a 15W RX.
STWLC33 also operates as a 5W RX (using the same TX coil).
Supports Qi and Airfuel Inductive Standards as Transmitter.
Qi Based as Transmitter.

Retrofit example: Phones and smartwatches can be retrofitted with STWLC33 for charging capabilities.

Multi-Coil Solution

15W 3-coil Transmitter and Receiver Kits.

15W 3-coil Transmitter and Receiver Kit

STWBC-MC 15W MP-A15 STEVAL-ISB047V1: 2-Layer PCB, 17mW standby consumption, Ping and FOD always active, Fast Charge Support.
STWLC33 – 15W Qi/AirFuel STEVAL-ISB042V1: 4-Layer PCB, Qi 1.2.3 and AirFuel Inductive certified, 42x42mm coil, BPP/EPP RX auto-switch.

15W 3-coil Transmitter Configuration

STWBC-MC MP-A15 supports Qi 1.2.4 EPP (up to 15W) and BPP (up to 5W).
Operates at a fixed frequency of 127.7 kHz.
Features Fast Charge support.
Supports a wide supply voltage range (5 to 20V) with USB-C and legacy 5V USB.

USB Type-C™ and Power Delivery

Overview: Flexible, robust solutions for power and interconnect.

Type-C & USB-PD Architecture
ST products for Type-C & USB-PD
Type-C & USB-PD Solution

The Re-evolution of USB

USB has evolved from a data interface to a primary provider of power. It offers:

More flexibility with reversible, thinner, and robust connectors.
More power with USB Power Delivery (up to 100W).
More speed with USB 3.1 (5/10Gbps) or USB 3.2 (20Gbps).
More protocols (Display Port, HDMI, Thunderbolt 3, etc.).

USB Type-C™ Pin Outs Functions

Enhances ease of use. Two pins (CC1, CC2) on the receptacle manage discovery, configuration, and connection management. Standard cables use one CC wire for signal orientation and the other as VCONN for powering electronics. USB 2.0 D+/D- wires are implemented.

USB PD Power Rules

Illustrates power delivery capabilities based on source power rating (W) and current (A), showing various voltage levels (5V, 9V, 15V, 20V) and corresponding power outputs (7.5W to 100W).

USB Type-C CC Connections

Details the connection process, including detecting attach/detach, resolving cable orientation, establishing DFP/UFP roles, and USB Power Delivery Communication. Supports 4 possible CC configurations.

USB Type-CTM and USB Power Delivery: High-level architecture

Describes the layered architecture (Device Policy Manager, Protocol Layer, Physical Layer) implemented in HW/SW topologies for both Provider and Consumer roles. Communication uses Biphase Mark Coding (BMC) over CC lines.

USB-PD: Power Negotiation Sequence

Outlines the sequence for power negotiation, including Cable Capabilities, Discover Identity, Source Capabilities, Request, Accept, and PS_RDY signals.

USB Type-C + USB 2.0 HW implementation in DRP mode

Shows the hardware implementation for Dual Role Port (DRP) mode, detailing the power path (Battery charger, DC/DC, LDO) and data path (USB 2.0 Controller + PHY) connected to the USB-C & PD controller.

Hard Coded Type-C™ and USB PD Controllers

ST offers controllers covering use cases from Type-C to full feature Power Delivery.

STUSB1600: USB Type-C controller, DUAL ROLE.
STUSB45: Power Delivery controller, SINK only.
STUSB47: Power Delivery controller, PROVIDER only.
STUSB1602: USB Type-C controller with USB PD PHY, DUAL ROLE.

Solutions are available for power ratings <15W, 15-60W, 60-100W, and Any power, supporting Alternate Mode.

Certified Solutions

ST provides certified solutions offering flexibility in stack partitioning and BOM optimization. This includes:

Highest flexibility with STM32 MCUs for multi-port management.
Highest integration with STUSBXX Type-C PD controllers.
Market-proven FW solutions on STM32F0 with discrete Analog Front End.
Full HW solutions with STUSB47 for AC adapters (Provider).
Standalone Type-C interfaces like STUSB1600 up to 15W.

ST Products for USB Type-C & PD

ST Chipset offers a flexible ecosystem for USB Type-C PD, including:

Scalable offer from STM32 general-purpose MCUs to hard-coded solutions for various use cases and power ratings.
Large portfolio for protection and filtering.
Highly secure solutions using STSAFE secure element family for authentication.

Power Source Building Blocks

Profile 1-2-3

Covers profiles 1-2-3 from 5W to 45W, featuring high efficiency and low EMI design. Includes Flyback Controller (STCH02), Power MOSFETs, Rectifier, CC/CV SEA01, and USB PD Interface ICs.

Profile 4, 5

Includes PFC (L6563H), LLC (L6699) controllers, Synchrounous Rectification (SRK2001), and USB PD Interface ICs for higher power applications.

Stand-alone Controllers & Discovery Kits

STUSB47 meets STUSB45

Stand-alone controllers for SOURCE (STUSB47) and SINK (STUSB45) applications, supporting Autorun functionality.

STM32G0 USB-C Discovery

A promotional kit and tool to learn and discover USB-C port capabilities. Offers 3 operating modes: Standalone, Sniffer + USB PD meter, and Advanced User mode. Ordering info: RPN: STM32G071B-DISCO, POS/RRP: 65$.

Adapters & Evaluation Boards

STEVAL-USBC2DP: USB Type-C to DisplayPort adapter

Expands a USB Type-C laptop screen to a monitor or projector via DisplayPort. Based on Alternate Mode, it offers a compact PCB design and includes DFU feature. Key products include STM32F072, LDK220, STG3684A, ESDALC5-1BF4, STPS0520Z, and X-CUBE-USB-PD.

AC/DC 45W USB-C PD adapter with SR (STEVAL-USBPD45C)

A modular design featuring Power Supply Board (STEVAL-USBPD45P) and Digital Control Board (STEVAL-USBPD45I). It supports Adaptive Synchronous Rectification, USB Type-C and Power Delivery based on STM32F0 and STUSB1602A. Key products include STCH02, STF7N80K5, STL40N75LF3, STM32F051K8U7, and STUSB1602A.

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