Power hardware components are often seen as an area focused on incremental improvements, but even small advances can make a significant impact. In this roundup, we review some of the latest products, ranging from bridge rectifiers and power transmitters to power supply modules and analog multiplexors, to hit the market.
Bridge Rectifiers Simplify Meeting Global EMC Requirements
Taiwan Semiconductor introduced the RxBS Family of 1000V bridge rectifiers, which simplify meeting global EMC requirements, and are offered with current ratings of 2 A, 3 A and 4 A. The RxBS series features an optimized reverse recovery time, a tightly controlled Trr (300 ns maximum), and reduces conducted emissions. It also offers a low forward voltage drop (1.30 V @ Tj = 25°C / 1.16 V @ Tj = 125°C), and all components are all UL-recognized (# E-326854) and RoHS compliant and halogen-free (per IEC-61249-2-21).
Taiwan Semiconductor said the applications for the RxBS series include switch-mode power supplies, PoE injectors, battery chargers, industrial equipment, televisions, and monitors, among many others.
High-Power CW Drivers Boost Laser Diodes
PicoLAS introduced a pair of drivers for its LDP-CW 250-40 series, which provide efficient control of high-performance continuous wave laser diodes. The hardware is housed in a compact enclosure and achieves an output power of 10 kW at a power density of 5 W/cm³. Both models in the series provide an efficiency of 94%, generate a maximum output current of 250 A and an output voltage of up to 40 V.
In a standard configuration, the drivers offer an extremely low ripple current of less than 0.85% and, at a maximum modulation frequency of 1 kHz, have an overshoot of less than 3%. The F (Fast) model provides a substantially higher modulation frequency of 50 kHz, a rise time of fewer than 20 µs, and an overshoot below 3%.
New RF Power Transistors Target Next-Gen TV Transmitters
Ampleon launched its BLF989E RF power transmitter, which takes advantage of a ninth-generation high-voltage (50 V) LDMOS process technology. The device is designed to be integrated into Doherty amplifiers used in the latest generation of UHF TV transmitters. The RF power transmitter offers a peak power capability of more than 1 kW. It provides an average (DVB-T) output power of 180W, allowing manufacturers to shrink the footprint of digital TV amplifiers by 20%.
The company has also unveiled a new ultra-wideband Doherty circuit for the BLF989E, which can achieve 50% efficiency and enable a single RF amplifier to cover the 470MHz to 700MHz frequency spread.
Power Supply Modules Packs High-Power Density in Low Profile
XP Power added a lower profile lineup to its HPT5K0 series of high-power density, high efficiency, 5kW AC-DC power supply modules. The HPT5K0-L offers a three-phase, three-wire, and earth, 180 to 528 VAC input, and have ITE/industrial and medical agency approvals. With a footprint at just 254 mm by 336 mm, the L series provides 5kW of power with efficiencies up to 94% in a small package.
There are three models in the new lineup, offering a three-phase input voltage, up to 200 V of output voltage (0% to 105%), with up to 83.3 A of output current (0% to 110%). All three can also take advantage of multiple protocols, including PMBus, CANopen, MODBUS, and SCPI.
