Energy

STMicroelectronics

The EVLVIPGAN100PD from STMicroelectronics is a 100 W USB Power Delivery (PD) 3.0 reference design for a USB Type-C® power adapter. 

It is an isolated power supply with a stand-alone USB PD controller. The evaluation board implements, at the primary side, a quasi-resonant flyback converter based on the ST VIPERGAN100, high-voltage flyback converter with optocoupler feedback for voltage regulation and a high-voltage gallium nitride (GaN) power switch. 

The converter combines a high-performance, low-voltage PWM controller chip with a 650 V start-up cell in a single package. The reference design achieves low standby power consumption thanks to the VIPERGAN100’s advanced power management and low quiescent current. 

To reduce the input mains current distortion, a power factor correction circuit based on the L6564 controller IC is used. At the secondary side, to increase system efficiency, rectification is based on the SRK1001 adaptive synchronous rectification controller.

The reference design also includes an STUSB4761 controller, which offers the benefits of a full hardware USB PD stack, allowing for robust, deterministic, and safe negotiation in line with USB PD standards.

STMicroelectronics

The STM32 Nucleo-64 board for the STMicroelectronics STM32U3 series of ultra-low power microcontrollers provides an affordable and flexible way for users to try out new concepts and build prototypes.

The new STM32U3 series implements cutting-edge power-saving innovations which ease the deployment of battery-powered embedded devices, especially in remote locations.

These latest MCUs are aimed at IoT devices that operate for extended periods without maintenance and with the limited energy from a coin cell or ambient solar or thermoelectric source. They take advantage of innovative techniques such as near-threshold design to cut dynamic power consumption, boosting efficiency by a factor of two compared to the previous STM32U5 series of ultra-low power MCUs from ST. 

 The NUCLEO-U385RG-Q board offers Arduino® Uno V3 connectivity support. ST morpho headers allow easy expansion of the functionality of the STM32 Nucleo open development platform with a wide choice of specialized shields.

The STM32 Nucleo-64 board does not require any separate probe as it integrates the ST-LINK debugger/programmer.

The STM32 Nucleo-64 board is supplied with comprehensive, free STM32 software libraries and examples available with the STM32Cube MCU package.

STMicroelectronics

The EVLSTGAP3S6S is a half-bridge evaluation board for evaluating the STGAP3S6S isolated single gate driver from STMicroelectronics.

The STGAP3S6S features a maximum 6 A current capability, rail-to-rail outputs, and optimized under-voltage lockout and desaturation protection thresholds for silicon carbide (SiC) MOSFETS. It is ideal for use in high-power industrial motor drivers.

The gate driver has a single Output pin and a driver line for an external Miller clamp N-channel MOSFET: this optimizes the suppression of positive and negative gate spikes during fast commutations in half-bridge topologies.

Device protection features are connected to the recommended network on the board and can be easily evaluated through the board test points. Dual Input pins allow the selection of signal-polarity control and hardware interlocking protection to avoid cross-conduction in case of controller malfunction.

The gate driver allows negative gate driving, and the onboard isolated dc-dc converters provide an optimized drive voltage for SiC MOSFETs.

Renesas

The RTK-251-SinkCharger-RAA489118 from Renesas is a single-port reference design for implementing battery systems with from two to seven lithium-ion battery cells connected in series. It supports two modes: in one, power is supplied solely from the USB Type-C® port; in the other, it enables a power bank function in combination with a li-ion battery with a battery management system (BMS).

Due to losses in the cable, onboard charger, and board, the USB Power Delivery (PD) controller requires appropriate USB Type-C input levels from the USB Type-C source device to operate the battery system effectively. Switches on this evaluation board allow the selection of the number of batteries in series and the charging current.

The firmware for this evaluation board is generated using an instruction tool called VIDWriter.

Renesas

The RA8E1 Fast Prototyping Board from Renesas is an evaluation board for prototype development based on the high-performance, value-oriented RA8E1 microcontroller. 

It has a built-in SEGGER J-Link™ emulator circuit to enable developers to write and debug programs without additional tools. Sample software is available to demonstrate the functionality of the RA8E1 MCU, and for connecting the RA8E1 Fast Prototyping Board with various wireless or sensor modules.

Key features of the board include:

  • Native pin access through 1 x 20 and 2 x 50 male pin headers
  • 20-pin camera interface connector
  • MCU current measurement point 
  • Two user LEDs 
  • Power LED indicating availability of regulated power
  • Debug LED indicating the debug connection
  • One User button
  • One Reset button
  • Two Digilent Pmod™ connectors
  • Arduino UNO R3 connector
onsemi

The NCD57252 evaluation driver board enables evaluation of the NCD57252, a high-current gate driver which can directly drive two independent IGBTs in any configuration. The driver provides 5 kVrmss of internal galvanic isolation from input to each output and functional isolation between the two output channels. 

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