Power Electronics Europe Feb/March 2023

24 PRODUCT UPDATE Issue 1 2023 Power Electronics Europe www.power-mag.com colour-mixing schemes, explains the company. The dimming function relies on a PWM duty cycle from three to 100%. Once the duty cycle goes below 3%, internal circuitry converts the output to analogue dimming, maintaining linearity. By combining PWM and analogue dimming functions, a dimming ratio greater than 100K to 1 can be achieved. There are also advanced diagnostics with fault-reporting functions. There are built-in protection capabilities for continued operation, including both short circuit and open-LED protection, as well as over-temperature shutdown. For earlier detection, there is also a pre-event over-temperature shutdown warning function. Two external hardware address pins enable up to four devices to be connected in I2C mode. An internal 16MHz oscillator avoids the need for an external high-precision clock, reducing the overall bill of materials (BoM) cost. The AL5887 LED driver is supplied in a 52-pin wettable QFN package, with exposed pad for heat dissipation. Typical applications that are suitable for the LED driver are in smart home appliances, electric vehicle charging stations, infotainment displays, IoT information indicators, and computing hardware. URL: https://www.diodes.com/part/view/AL5887/ The automotive-grade 40V N-channel power MOSFETs use the large transistor outline gull-wing leads package format, the L-TOGL. The L-TOGL packages and its resulting heat dissipation characteristics mean that the MOSFETs are highly optimised for handling large currents, says the company. They each feature high drain current ratings (400A for the XPQR3004PB and 200A for the XPQ1R004PB), with what are claimed to be industry-leading on-resistance values (0.3m Ω for the XPQR3004PB and 1m Ω for the XPQ1R004PB). There is no internal post structure (solder connection) because the source and outer leads are connected via a copper clip. A multi-pin structure used for the source leads reduces the package resistance (and associated losses) by about 70%, compared with the existing TO-220SM(W) package. The drain current (ID) rating of the XPQR3004PB, represents a 60% increase over the existing TKR74F04PB, housed in the TO-220SM(W) package. The thick copper frame reduces junction-to-case thermal impedance to 0.2°C/W for the XPQR3004PB and 0.65°C/W for the XPQ1R004PB to ease heat dissipation, lower operating temperatures and enhance reliability. The AEC-Q101-qualified MOSFETs operate in automotive applications at temperatures up to 175°C. The gull-wing leads reduce mounting stress and allow easy visual inspection to help improve the solder joint reliability. When used in high current automotive applications, such as semiconductor relays or integrated starter generators (ISGs), the MOSFETs can simplify designs and reduce the number of MOSFETs required, says Toshiba, contributing to size, weight and cost reductions. Both MOSFETs are shipping in volume now. https://toshiba.semicon-storage.com/eu/top.html Toshiba releases two automotive- grade N-channel MOSFETs The latest linear current LED driver from Diodes drives multiple LEDs for complex colour mixing and different lighting patterns. The LL5887 integrates both I2C and serial peripheral interface (SPI) options. It delivers a wide colour range and an extensive dynamic range of brightness levels, says the company. There are 36 independent programmable channels which can drive up to 12 RGB LED modules or 36 single colour emitters. It features an internal 12- bit pulse width modulation (PWM) for colour and six-bit analogue brightness control, which can be accessed through either interface. There are three programmable banks for software control of each colour, making it easier to programme and set RGB lighting module patterns. An independent colour-mixing and brightness register per channel enables better Diodes unveil AL5887 is dual digital interface, multi-channel LED driver EPC develops 80V laser driver IC for higher density lidar systems Efficient Power Conversion (EPC) has designed the monolithic IC with an 80V, 40A FET with gate driver and 3.3 logic level input. It is a single chip for time-of- flight lidar systems used in robotics, surveillance systems and vacuum cleaners and for lidar systems for gesture recognition, ToF measurement, robotic vision or industrial safety. The laser driver uses 5V supply voltage and is controlled using 3.3V logic. It is capable of frequencies greater than 50 MHz and super short pulses down to 2ns to modulate laser driving currents up to 15A. Voltage switching time is less than 1ns and delay time from input to output is less than 3.6ns. The single chip driver plus GaN FET based on EPC’s proprietary GaN IC technology in a chip-scale BGA form factor that measures 1.7 x 1.0 x 0.68mm. The wafer level packaging is characterised by low inductance and the level of integration means that the overall solution is 36% smaller on the PCB compared to an equivalent multi-chip discrete implementation. The EPC21701 complements the ToF driver IC family in CSP (chip-scale package) that also includes the 40V, 15A EPC21601 and the 40V, 10A EPC21603. This family of products will enable faster adoption and increased ubiquity of ToF solutions across a wider array of end-user applications, believes EPC. They dramatically improve the performance while reducing size and cost for time-of-