The latest Electronics Weekly product news on analogue, linear and mixed-signal ICs.
STMicroelectronics has added I2T fusing to a automotive quad high-side power switch. As well as current-squared time fusing VNF9Q20F, as it will be known “responds within 100µs to turn off the [output] mosfet if excessive current is detected”, said ST. “Performing as an intelligent circuit breaker, [it] enhances board-net voltage stability and prevents PCB traces, connectors and wire harnesses from ...
EPC Space has created two surface-mount 40V radiation-specified GaN hemts for space use. EPC7001BSH is a 50A (120A pulse) 11mΩ transistor in 5.7 x 3.9mm packaging EPC7002ASH is a 15A (40A pulse) 28mΩ transistor in 3.4 x 3.4mm packaging “Both devices have a total dose radiation rating greater than 1,000kRad(Si) and SEE immunity for LET of 83.7MeV/mg/cm2 with Vds up ...
Texas Instruments introduced a 450V intelligent power module that includes a GaN three-phase bridge for motors up to 250W. Called DRV7308, it can stand-off 650V and handle pulses up to 5A. Inside its 12 x 12mm QFN package and six 205mΩ hemts (at 25°C ambient), drivers and protection component, and it is capable of implementing inverters with >99% efficiency, according ...
Alpha and Omega Semiconductor is aiming at Meteor Lake and Arrow Lake notebooks with a multi-phase dc-dc converter controller that meets Intel IMVP 8, 9, 9.1, and 9.2 specifications. AOZ71137QI is a three rail seven-phase controller for CPUs that has: up to four phases for the core voltage (‘IA domain’), up to two phases for graphics (‘GT domain’) and one ...
Toshiba has announced 300mA LDOs in a 1 x 1 x 0.37mm DFN4D package. Quiescent current is typically 1.2μA with no load. They are “specifically aimed at applications powered by small-scale batteries [including] IoT modules, communications modules, wearable devices and other miniature equipment”, according to the company. There are over 30 devices spanning outputs of 0.8 to 5.0V, with an ...
Texas Instruments is planning a pair of precision current monitors that can measure ±50A over -4 to 110V. They are the standard INA791B (right) and the PWM residue rejecting INA790B (below). “High-precision measurements are enabled by matching the shunt resistor value and the current-sensing amplifier gain across temperature,” according to TI. “Enhanced PWM rejection reduces the effect of common-mode transients ...
Although engineers design predominantly digital systems, they will always need some analogue knowledge, say Scott Carson and Jed Boyer. The drive to minimise power consumption in everyday devices via digitisation means much of the infrastructure needed to power these devices is largely analogue at its core. With analogue design being such a critical skill for systems engineers, it is quite ...
Last week Belgian fabless chip company Melexis announced a unique inductive sensing IC that includes a tiny transformer, drive circuit and sense circuit, so Electronics Weekly decided to have a closer look. No permanent magnet, external or internal, is needed, and external magnetic fields are rejected. MLX92442 only requires a nearby electrically conductive object for triggering. It comes in either ...
Alpha and Omega Semiconductor has released a 7A 23V USB Type-C protection and reverse-blocking switch IC. Dubbed AOZ1377DI, is can be used in both Sink and Source applications and it “offers features that significantly reduce voltage drop and power loss compared to back-to-back p-channel devices”, promises the company. Instead it uses a pair of internal drain-to-drain n-channel mosfets, whose gates ...
EPC has used GaN transistors to create a high-power Class-D two-channel audio power amplifier design. Instantiated in evaluation kit EPC9192, it is capable of pushing 700W/channel into 4Ω (or 2Ω) or 350W/channel into 8Ω. Bridging the two channels results in 1.4kW drive into 4 to 8Ω. Key components, per channel, are a pair of 200V EPC2307 GaN transistors on a ...
