STMicroelectronics , a global semiconductor leader serving customers across the spectrum of electronics applications, participated in the IOTSHOW.IN 2022, which was held in Bengaluru.
Based on the theme, “Internet of Things and Connectivity Technologies”, ST featured cutting-edge and latest IoT technologies and applications, platforms, networks, that can help the organizations to build own IoT solution and develop innovative prototypes.
The demos were from 3 main sections like Smart Mobility, Power & Energy, and the Internet of Things & Connectivity and few interesting included in Wireless charger 200W, USB Type C and Power Delivery, Power management for wearable and IoT, Face detection demo, STM32U5, LoRa gateway, BLE based Smart Plug, BLE mesh lighting demo, Global Navigation System (GNSS) for STM32 and STM32MPU and ST25 Dynamic tags and NFC Readers for the IoT applications, amongst others.
Read more here:
Wireless Charger 100W:
This demo highlights the capability of STWBC2 -HP, Which is a digital controller dedicated to design Qi-certified Wireless Power TX applications and also the capability of STWLC98, Which is the receiver that is capable to harvest upto 70W;
The STWBC2-HP is a SiP that embeds the STM32G071, it is an ARM Cortex™-M0+ CPU with up to 128 k Flash memory and up to 32 k of SRAM with parity check, with a clock frequency up to 64 MHz.
It also embeds a 12-bit, 0.5 μs ADC and provides UART, I2C, SPI and GPIOs. The STWBC2-HP is capable of driving the DC-DC stage and the half- or full-bridge inverter stage of a generic Qi wireless battery charging TX. The STM32G071 embedded in STWBC2-HP also provides two 12-bit DACs and USB-PD controller.
STWBC2-HP based wireless charger TX demo displayed here supports up to a TX power of 100W+ with ST proprietary protocol (STSC) it also complies to Qi V1.3 EPP 15W with MP-A2 topology, and authentication with STSAFE-A110. The Type-C input interface supports USB-PD 3.0, including PPS, and so on, the Innovative Q factor measurement for high accuracy QFOD (Foreign Object Detection), it also embeds Rich protections with static and dynamic OVP, OCP, OTP and power balanced FOD, there is also an Optional proprietary extension for wider spatial freedom (X-Y-Z)
The Receiver portion is wired around STWLC98 is a highly integrated wireless power receiver suitable for applications delivering an output power up to 70W.The chip has been designed to support Qi specifications 1.2.4 and 1.3 for inductive communication protocol with Extended Power Profile (EPP) and proprietary ST Super Charge(STSC) protocol for fast charging. With integrated low-loss synchronous rectifier and low drop-out linear regulator, STWLC98 achieves high efficiency with low power dissipation. We do have a receiver solution based on STWLC99, that is capable to support upto 100W receiver applications.
Through I2C interface the user can access and modify the configuration parameters for customized applications, the final configuration parameters are stored in embedded Few Times Programmable(FTP) non-volatile memory and automatically retrieved at power-up. The device can also operate as wireless transmitter up to 15W (coil dependent) Chip-Scale Package and low BOM count makes it very suitable for compact applications.
Power management Solutions for wearable and IoT:
ST offers state-of-the-art power management solution for portable and wearable devices,
Here is the short specs of the devices listed in this demo panel.
- LDLN025 250 mA ultra-low noise LDO for noise sensitive data processing applications
- LDBL20 200 mA very low quiescent current linear regulator IC meant for battery operated applications, and helps extending the battery life.
- LD39130S 300 mA very low quiescent current Linear regulator IC,
- STLQ020 200 mA ultra-low quiescent current LDO
- ST1S15 500 mA, 6 MHz synchronous step-down converter, for various step down low power applications.
- ST1S12 0.7 A, 1.7 MHz adjustable, step-down switching regulator
- STBC02 Li-Ion linear battery charger with LDO, load switches and reset generator for portable applications.
- STC3115 Gas gauge IC with alarm output for handheld applications
- STC3117 Gas gauge IC with battery charger control for handheld applications.
the panel displays the battery efficient power management LDO, DC-DC and Small battery charging and Fuel gauge eval boards like STEVAL-ISB017V1 – STC3117 battery fuel gauge evaluation board, the STEVAL-ISB041V1- battery power management evaluation board based on STBC02 and STEVAL-LDO001V1 – Evaluation platform for LDBL20, LDLN025, LD39130S and STLQ020 LDO’s,
USB Type-C and Power Delivery:
The demo is an active panel, able to charge your USB Type-C device.
Fast charging of mobile devices is a key feature in the industry. Various standards co-exist in the market such as USB type-C, USB Power Delivery and Qualcomm Quick Charge.
ST has developed ICs to enable fast charging capabilities of any USB device capable of providing power.
We have displayed STEVAL-USBPD45C, P-NUCLEO-USB002, STEVAL-ISC004V1, STEVAL-ISC005V1, & STEVAL-USBC2DP, evaluation boards in the Active panel,
The panel shows two different ways to implement architectures for adapters and smart charging in USB-C & PD applications: Programmable solutions and the Auto-Run ones.
Both rows represent an usual scenario where Source and Sink contract upon the available capabilities (5V, 9V and 15V) every 5sec.
The SOURCE is based on STEVAL-USBPD45C -45W USB Type-C™ Power Delivery adapter reference design based on STCH03, STM32F051 and STUSB1602A, and the SINK solution is based on STM32G071B-DISCO, Discovery kit with STM32G071RB MCU.
The Auto-Run solution – Source is based on STEVAL-ISC004V1 (*): STUSB4710A evaluation board (with on-board DC-DC). And the SINK is based on STREF-SCS001V1, which is a Fast and easy migration from DC barrel to Type-C with STUSB4500.
NFC Readers for the IoT applications
The ST25R3918B is a multipurpose NFC transceiver supporting NFC reader, passive peer-to-peer functionality and NFC card emulation mode.
It is optimized to achieve good read ranges with low output power, even under noisy and harsh environments, using noise reduction receiver technology.
This IC is optimized for IoT and industrial applications where excellent analog performance is required.
Key features of ST25R3918:
- Noise suppression Receiver (NSR)
- Reduces interference from noise sources and increases immunity
- Ensures electromagnetic immunity and eases certification
- Active Wave Shaping (AWS) makes over- & under-shoot smoothing easier
- Dynamic Power Output (DPO):0.5W output power with dynamic power adjustment to optimize power transfer
- Low power card detection achieves market-leading power consumption using inductive wakeup