Maxim MAX5074, a pulse-width-modulation (PWM) power IC with integrated power MOSFETs, is targeted at isolated power supplies for IEEE 802.3af-compliant, power-over-Ethernet (POE), powered devices such as IP phones, WLAN access points, and IP cameras. The MAX5074 is also ideal for converting -48 V to +3,3 V in power-sourcing equipment (POE), which includes switch/routers and midspans. The device can be used in both flyback- and forward-converter isolated power supplies with a wide ±11 V to ±76 V input-voltage range and up to 15 W output power.
The MAX5074 provides a 'look ahead' signal for driving secondary-side synchronous rectifiers, thus allowing greater than 90% efficiency without resorting to complicated drive schemes and additional discrete components. It includes thermal shutdown. It provides continuous short-circuit protection with hiccup-mode current limit, which reduces power dissipation under persistent overload conditions. The switching frequency is resistor-/capacitor-programmable up to 500 kHz, thus allowing the use of smaller external magnetics and capacitors. These features, together with the integrated MOSFETs, reduce power-supply size and cost for POE applications.
For more information contact CST Electronics, 011 452 0706 or Electrocomp (Value Added Reseller), 011 458 9000.
Reliable power solution Conical Technologies
Power Electronics / Power Management
The Mibbo MLD-120W-xxVx is a robust DIN-rail mounted DC-DC converter with a 120 W output capacity specifically designed for industrial and automation applications.
Read more...Easing the path for IPPs navigating local energy regulations
Power Electronics / Power Management
Independent Power Producers (IPPs) and developers venturing into South Africa’s renewable energy sector face an onerous and challenging regulatory landscape characterised by uncertainty in securing grid connections and considerable development costs.
Read more...Wide input voltage buck-boost converter Altron Arrow
Power Electronics / Power Management
The MAX77859 from Analog Devices is a high-efficiency, high-performance buck-boost converter targeted for systems requiring a wide input voltage range of between 2,5 and 22 V.
Read more...Development kit for TI’s SN6507
Power Electronics / Power Management
This comprehensive solution is designed to help engineers evaluate the performance of TI’s SN6507 transformer driver for isolated power supplies.
Read more...Track with precision Electrocomp
Telecoms, Datacoms, Wireless, IoT
KYOCERA AVX provides innovative antennas for cellular, LTE-M, NB-IoT, LoRa, GNSS, BLE, UWB, Wi-Fi, and future Satellite IoT.
Read more...RGBIR sensor with I2C interface Electrocomp
Opto-Electronics
Available in a miniature opaque 2,67 x 2,45 mm package, Vishay’s VEML6046X00 includes high-sensitivity photodiodes, a low noise amplifier, and a 16-bit analogue to digital converter.
Read more...High-voltage IGBT Hi-Q Electronics
Power Electronics / Power Management
Diotec Semiconductor has launched the DIW030M060 IGBT, a 600 V, 30 A device with a built-in reverse diode.
Read more...DC converter for Hi-Rel applications Vepac Electronics
Power Electronics / Power Management
The MFK2812S from Crane Aerospace & Electronics is a DC-DC converter with an input voltage range of 16 to 50 V and an output of 12 V at up to 2,08 A.
Read more...Thick film power resistors Electrocomp
Passive Components
Vishay has released a new product to the market, its thick film power resistor, which is offered in a clip-mount TO-247 package.
printer friendly version