36-V, 1-A STEP-DOWN SYNCHRONOUS REGULATOR SIMPLIFIES INTERMEDIATE POWER BUS AND POINT-OF-LOAD POWER DESIGNS

Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications, today introduced the ADP2441, DC-to-DC switching regulator, the most recent in ADI’s growing portfolio of integrated power management switching regulators. The new 36-V, 1-A (amp) step-down regulator integrates both low-on-resistance, high-side and low-side power switches to provide compact point-of-load design and offers more than 94 percent efficiency. Under light load conditions, the ADP2441 will automatically operate in PSM (pulse-skip mode) to reduce switching losses and improve energy efficiency.

The ADP2441 supports a wide input range from 4.5 V to 36 V to accommodate a diversity of point-of-load applications including industrial and communication equipment and healthcare electronics. Output voltage is adjustable from 0.6 V to 90 percent of input voltage. The new regulator also offers low minimum on-time of 50 ns (nano seconds) saving valuable board space and cost through its suitability for single-stage, high input to low output power conversion.

By using a current-mode constant frequency PWM (pulse-width modulation) control scheme, the ADP2441 offers excellent stability and transient response to minimize the output voltage ripple. The switching frequency of the regulator can be adjusted from 300 kHz to 1 MHz. The new regulator also offers precision enable, voltage tracking and power-good features to enable a simple and reliable start-up sequence. System reliability and protection are enhanced further through over-current protection, under-voltage lockout and thermal shutdown. The ADP2441 operates over the −40°C to +125°C junction temperature range and is available in compact 3 mm × 3 mm 12-lead LFCSP package. Analog Devices’ integrated power management switching regulators are also supported by the ADIsimPower™ design tools, which makes selecting components, simulating power supply performance and building evaluation circuits easy and fast.

Comments

Post a Comment

Popular posts from this blog

What is Class I Division 2?

Image
A Class I Division 2 is a location: (1) In which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or in case of abnormal operation of equipment, or (2) In which ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are normally prevented by positive mechanical ventilation, and which might become hazardous through failure or abnormal operation of the ventilating equipment. Class I Division 2 Classification Class I Division 2 refers to the ANSI/ISA 12.12.01 standard. This standard was previously UL1604 until UL recommended the newer ANSI/ISA standard be used and that all hazardous location products be certified under this standa
Read more

FUSE SIZING CONSIDERATIONS FOR HIGHER EFFICIENCY MOTORS

Image
When selecting the proper fuse for short circuit protection in motor starting applications, it is important to not only ensure that the fuse will not nuisance open during motor start up times, but also that the fuse will coordinate as required with overload relays. When sizing fuses between 125% and 150% of the motor nameplate current, several advantages, including ease of coordination with an overload device, a smaller disconnect, and increased short circuit protection from a lower fuse rating, can be achieved. However, if sizing at this level prevents the motor from starting, it may then be necessary to increase the fuse ampere rating and it then becomes important to know the NEC sizing limitations. As of June 1, 2016, the US Department of Energy has mandated that newly manufactured electric motors will need to meet NEMA Premium® efficiency standards. As motor efficiencies increase, motor locked rotor currents can also be expected to increase. In addition to this, with across-the-lin
Read more

7/8 16UN Connectors that Provide 600 Volts and 15 Amps

TURCK announces new A-Size 3 and 4-pin 7/8 16UN powerfast™ connectors that provide up to 600 Volts and 15 Amps of power. These IP67 rated connectors provide a modular wiring system designed to handle high current applications for machine power distribution, while providing resistance to vibration commonly associated with conveyors, motors and material handling applications. The cordsets are available with a tray rated, exposed run PVC flexlife ® cable, with or without STOOW rating, and 14 AWG wires that allow you to replace hard wiring with a robust, quick disconnect system that saves the time and money spent installing a conduit system. The A-Size powerfast line offers male and female, straight connectors, standard and custom lengths, and pigtails or extensions. To make the system complete, fully encapsulated mating receptacles, with 1/2”-14 NPT mounting threads are available.
Read more