Modern battery, fuel cell and solar cell systems need ways of transferring power in two directions. New dc-dc converters that are bidirectional can eliminate the need for bulky transformers in these applications while bringing more efficient operation. ANKUR PATEL VICOR CORP. ALTERNATIVE energy scenarios involving renewable sources are characterized by the sending of power both […]
Controllers
Why power modules can work better
than discrete power circuits
The example of an ISL8203M power module shows how designers typically size up the decision between devising a power circuit using discrete components versus spec’ing–in a ready-to-go module. Jian Yin, Intersil Corp. Power modules are the way to go when it comes to getting your design to market quickly, but choose wisely. Power-module architecture choices […]
IEEE 802.3bt powered device interface controller lets apps get 71 W
Linear Technology Corporation introduces the LT4295 IEEE 802.3bt powered device (PD) interface controller for applications requiring up to 71W of delivered power. The next Power over Ethernet (PoE) standard – IEEE 802.3bt – enables manufacturers to go beyond the 25.5W allocated by the 2009 IEEE 802.3at standard. Linear Technology is poised to be first to […]
60-V Synchronous Buck Charger handles 20-A Lead-Acid, Li-Ion Charge Currents
Linear Technology Corporation introduces the LTC4013, a highly integrated, high voltage multi-chemistry synchronous step-down battery charger controller. With a wide input voltage range that spans up to 60V, the LTC4013 uses temperature-compensated 3- and 4-stage charge algorithms to efficiently charge 12V and 24V lead-acid batteries. Alternatively, the LTC4013 will charge a multicell Lithium-based battery stack […]
200-A, 28-Vdc contactors for aerospace and defense applications
TE Connectivity Ltd. is releasing its K200 series contactors, a small, lightweight, and efficient 200-Amp 28 VDC power switching solution for stringent 28 V DC aerospace and defense applications. The single pole, single throw, normally open contactors are designed for use in DC power distribution systems in commercial and military aircraft and ground vehicles. Aerospace power distribution […]
Automatic decay scheme for stepper motor current regulation
by Rakesh Raja and Sudhir Nagaraj || Closed-loop current regulation in stepper motors plays a major role in determining the accuracy and smoothness of motor motion. The scheme of current control also determines the power efficiency of the motor drive system. A typical pulse-width modulation (PWM) control loop used today has a suite of fixed-decay […]
Behlman announces the addition of Chassis Managers to its line of products
Behlman Electronics Inc., known for providing power products for military shipboard, airborne and mobile programs, as well as for industrial and commercial applications, has introduced an Intelligent Chassis Manager that will provide a wide range of diagnostic, management, and control functions for virtually any kind of electronic chassis. The Behlman IQCM-20 Intelligent Chassis Manager is […]
Dual-phase PWM power controller targets, server, storage, FPGA apps
Integrated Device Technology, Inc. has strengthened its offerings of power management products with the introduction of a high-performance dual-phase digital power controller that can help customers optimize, monitor and control high-power supply systems. The second-generation ZSPM1363 digital PWM (pulse-width modulation) controller delivers high performance and excellent transient response, making it ideal for addressing the growing […]
60-V, 7-A Step-Down Regulator targets LEDs, Supercaps, Lasers, Peltiers
Linear Technology introduces the LTM8064, a step-down DC/DC µModule (power module) regulator with a 6V to 58V (60Vmax) input voltage range and adjustable load current control with ±10% accuracy at 7A. The LTM8064 can be used as a point-of-load step-down regulator operating from 24V, 36V and 48V voltage rails used in communication infrastructure, high end […]
Diode-OR controller provides seamless handoff between redundant power supplies
Linear Technology Corporation introduces the LTC4371, a rugged ideal diode-OR controller for dual feed high power telecom and datacom boards. The LTC4371 provides seamless handoff between redundant power supplies, replacing power Schottky diodes and associated heat sinks with N-channel MOSFETs, significantly reducing power loss, voltage drop and solution size. The controller is designed to withstand […]
