Cartes de développement
Produits (3)
FUSB307BGEVB - USB Type-C Port Controller EVB | onsemi
The onsemi FUSB307BGEVB is an evaluation board (EVB) for the FUSB307B USB Type-C Port Controller (TCPC), designed to demonstrate and accelerate development of USB Power Delivery (USB-PD) systems. The board integrates the FUSB307BMPX TCPC IC and provides all necessary test points, USB Type-C receptacles, and power connections to evaluate autonomous USB-PD negotiation offloading the host microcontroller or Type-C Port Manager (TCPM). A USB Type-C Port Controller is a dedicated companion IC that handles the time-sensitive physical-layer USB-PD messaging on the Configuration Channel (CC) pins, freeing the application processor from tight timing constraints. The TCPC sits between the TCPM (running on the host SoC) and the physical USB Type-C connector, acting as a standardized interface compliant with the USB-PD Interface Specification Rev 1.0. Key features demonstrated by this EVB include autonomous GoodCRC packet response, automatic retry of sending packets, support for all SOP* packet types, VBUS source and sink control, programmable GPIOs, dead-battery operation powered from VBUS with integrated LDO for TCPM supply, and four selectable I2C addresses. The FUSB307B complies with USB Type-C Rev 1.3 and USB-PD Rev 3.0 specifications, making it suitable for modern sink/source/DRP applications. The architecture combines a hardware-based BMC encoder/decoder with autonomous packet retry and CRC handling, offloading the host CPU from microsecond-level USB-PD timing. The integrated LDO derives power from VBUS during dead-battery scenarios, ensuring the TCPM can boot even when the system battery is fully discharged. Four hardware-selectable I2C addresses allow multiple TCPCs on a single bus for multi-port designs. Typical use cases include USB-PD sink adapters, USB-PD source chargers, dual-role port (DRP) systems in laptops and tablets, docking stations, and any embedded application requiring compliant USB Type-C power negotiation. The EVB is a critical tool for firmware developers validating TCPM-to-TCPC I2C interactions. Designers using the FUSB307BGEVB should consult the FUSB307B datasheet for I2C register definitions, VBUS discharge requirements, and dead-battery LDO current limits. Ensure the TCPM firmware supports the TCPC interface specification before integration. This page synthesizes distributor pricing, EVB alternatives, and practical bench-test guidance not consolidated in the manufacturer datasheet.
LMP8646EB/NOPB - Precision Current Limiter Eval Board | Texas Instruments
The Texas Instruments LMP8646EB/NOPB is an evaluation board designed to demonstrate and accelerate design-in of the LMP8646, a precision current limiter IC housed in a 6-pin SOT-23 package. The LMP8646 detects small differential voltages across a current-sense resistor in the presence of high input common-mode voltages, supporting system rails from -2 V to 42 V common-mode range while delivering a fixed-gain output. The board includes the LMP8646 device, sense resistor footprint, input/output test points, and a clearly labeled schematic to enable immediate bench measurement. An integrated current-sense amplifier (also called a current-shunt monitor or current limiter) is a specialized analog IC that amplifies the small millivolt-level differential voltage developed across a low-side or high-side shunt resistor into a ground-referenced signal proportional to load current. Within the broader hierarchy, the LMP8646 belongs to: current-sense amplifier -> analog amplifier -> signal chain IC -> power management IC -> semiconductor. This category plays a critical role in power monitoring, battery management, motor control, and overcurrent protection by translating load current into a measurable, low-impedance voltage that downstream ADCs, microcontrollers, or protection comparators can directly read. Key features include a common-mode input range of -2 V to 42 V (independent of supply), a fixed gain of typically 20 V/V, a quiescent current of approximately 380 microamperes, an operating temperature range of -40 C to +125 C, and a bandwidth designed for DC and low-frequency motor/load current signals. The supply voltage range typically tracks the LMP8646 device rating (2.7 V to 12 V). The SOT-23-6 (DBV) footprint with exposed thermal pad simplifies layout and allows operation up to the full thermal envelope. The SOT-23 family belongs to the SMD/SMT package hierarchy used in millions of compact industrial and automotive modules. Technically, the LMP8646 uses a chopper-stabilized input stage to achieve very low input offset voltage and high DC accuracy over temperature, making it suitable for measuring sub-100 mV sense voltages without losing linearity. The high common-mode rejection allows it to sit on either side of the sense resistor - a key advantage in motor-drive, solenoid, and battery-pack designs where the shunt must remain in the high-current path. As a current limiter, the internal precision reference and open-drain flag output simplify hardware-based overcurrent shutdown, removing firmware polling latency from the protection loop. Typical applications include eBike/pedelec and small EV battery-pack current monitoring, DC motor overcurrent protection in cordless tools, USB-C and 24V industrial-bus load monitoring, server and telecom -48 V hot-swap current limiting, solar charge controller input metering, and industrial PLC analog-input front ends. In each, the LMP8646EB/NOPB board lets a designer confirm transient response, settling behaviour, and thermal performance on the bench before committing to a layout. When designing with this part, place the sense resistor as close as possible to the LMP8646 input pins and keep the differential traces length-matched and surrounded by ground to preserve CMRR; ensure the supply decoupling capacitor sits within 2 mm of the V+ pin. The board's reference schematic can be copied nearly verbatim into production layouts. This page synthesizes distributor pricing from DigiKey, Mouser, Octopart, and LCSC, cross-referenced against the TI datasheet, and packages the data for engineers comparing evaluation boards during component selection. The accompanying pinout diagram, alternatives list, and comparison table are not duplicated on TI's product page or typical distributor listings.
XR32220EBEVB - XR32220 RS-232 Evaluation Board | MaxLinear
The MaxLinear XR32220EBEVB is an evaluation board for the XR32220 2-driver / 2-receiver RS-232 transceiver with 1.65V to 5.5V variable low-voltage logic interface. The EBEVB suffix denotes the EBER die variant that is factory-set for slew-rate-limited outputs, reducing EMI and crosstalk in dense PCB layouts. The board is a 2-layer PCB that provides direct access to all device pins and signal paths so engineers can evaluate RS-232 link performance, charge-pump behavior, and logic-interface voltage translation without committing to a full design. What is an RS-232 transceiver? An RS-232 transceiver is an interface IC that converts logic-level UART signals (typically 0V to VLOGIC) to and from the higher-voltage +/-5V to +/-15V signaling defined by the EIA/TIA-232 standard, which historically connected DTE such as PCs to DCE such as modems. The XR32220 integrates a high-efficiency switched-capacitor charge pump plus on-chip drivers and receivers in a single SSOP-20 package, replacing a discrete RS-232 implementation with one part. It belongs to the larger serial-transceiver / line-driver family within interface ICs, sitting below UART controllers and above discrete level shifters in the typical BOM. Key specifications of the target XR32221 die include 2 drivers and 2 receivers, an integrated charge pump that runs from a single 3.0V to 5.5V supply, a VL pin accepting 1.65V to VCC logic levels, and data-rate options of 250 kbps (EBER) or 1 Mbps (EUER). The EBEVB board demonstrates the slower, lower-EMI variant. Per the MaxLinear datasheet, supply current at no load is roughly 6 mA and drivers maintain ±5V minimum output swing into 3 kΩ loads, while receivers accept ±25V inputs. The architecture is a BiCMOS charge-pump plus driver-and-receiver design; the charge pump generates V+ and V- rails from VCC using four small 0.1 µF flying and reservoir capacitors. EBER-mode slew-rate limiting reduces high-frequency harmonics by roughly a factor of four compared with the EUER high-speed variant, making it the preferred choice for cables longer than a few meters or noisy environments. Typical applications for the XR32220 die include portable and hand-held equipment such as notebook and palmtop computers, point-of-sale (POS) terminals, industrial HMI panels, battery-powered data loggers, and any embedded system that needs a single-supply RS-232 port with a low-voltage host MCU. The EBEVB evaluation board lets hardware engineers prototype the link before committing to PCB layout. A key design consideration when using this EVM is to populate the four charge-pump capacitors with low-ESR ceramic types rated for at least 16V, keep the capacitor loop short, and observe the VL range so the host MCU is not exposed to 5V on its I/O. For high-speed variants above 250 kbps, switch to the XR32220EUER die and a corresponding UEVB board. This page synthesizes verified distributor inventory, parametric drop-in IC alternatives, and practical PCB-level design guidance that is not duplicated in the manufacturer datasheet.