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 […]
Regulators
Online tool helps spec AC/DC power modules
Vicor announced the introduction of its new Power System Designer online design tool, giving system designers unprecedented flexibility to architect and optimize end-to-end power systems leveraging Vicor’s power component design methodology and high-performance power components. Grappling with Complicated Power Requirements Complex and compact electronic products and systems have driven demand for ever smaller, more […]
Narrow profile DC-DC regulated power supply series
Acopian Power Supplies announced that their Narrow Profile DC-DC Regulated Power Supply Series is certified to UL 60950 (Information Technology Equipment) and UL 508 (Industrial Control Equipment) Safety Standards, conforms to the low voltage directive legal requirements to achieve CE marking, and is RoHS Compliant. The over 150-part series comprises 100 kHz single-output power supplies […]
Synchronous buck regulators step-down 5 and 3.3-V primary rails to POL inputs
Intersil Corporation has announced a family of monolithic synchronous buck regulators that step-down 5V and 3.3V primary rails to point-of-load (POL) inputs as low as 0.6V for GPUs, FPGAs, DSPs and SOCs. The highly efficient ISL78233, ISL78234 and ISL78235 deliver 3A, 4A and 5A, respectively, of continuous output current to infotainment head units and advanced […]
Synchronous buck regulators step-down 5 and 3.3-V rails to low PoL inputs
Intersil Corporation has announced a family of monolithic synchronous buck regulators that step-down 5V and 3.3V primary rails to point-of-load (POL) inputs as low as 0.6V for GPUs, FPGAs, DSPs and SOCs. The highly efficient ISL78233, ISL78234 and ISL78235 deliver 3A, 4A and 5A, respectively, of continuous output current to infotainment head units and advanced driver […]
15-A, 20-A POL Regulators target servers with better energy efficiency
Exar Corporation, a supplier of analog mixed-signal products serving the industrial, high-end consumer and infrastructure markets, introduced the XR76116 and XR76120, 15A and 20A point-of-load (POL) step-down buck switching regulators using the latest generation of Exar’s patented emulated current mode constant on-time (COT) control. This control loop provides the fast transient response required in demanding […]
Rack-Mount DC Load System includes regen to recover energy
Intepro Systems announces the ELR 5000 modular, programmable DC load—the latest addition to the Intepro family of power system automatic test equipment (ATE). Housed in a 6U, 19” rack enclosure, the ELR 5000 can accommodate up to 10 completely self-contained, fully-programmable DC load modules with 320W nominal power, each. The modules can be used separately […]
Regulator delivers 50 A or dual 25 A from 12 VIN to 0.9 VOUT
Linear Technology Corporation introduces the LTM4650, a dual 25A or single 50A output step-down µModule regulator with onboard shielded inductors, MOSFETs and a dual DC/DC regulator IC housed in a small thermally enhanced plastic package. The device is offered in a 16mm x 16mm x 5.01mm BGA with a patented built-in heat sink. The heat […]
Regulators sport 2 kVac galvanic isolation for UL60950 IT safety certification
Linear Technology introduces the LTM8067 and LTM8068, DC/DC µModule regulators with 2kVAC galvanic isolation. The LTM8067 and LTM8068 include an isolating transformer, control circuitry, power switches and other supporting components in a 9mm x 11.25mm x 4.92mm BGA package. Only one resister, plus input and output capacitors are required to complete the design. Pin creepage […]
chronous Step-Down Silent Switcher Delivers 94% Efficiency at 2 MHz
Linear Technology Corporation announces the LT8641, a 3.5A, 65V input capable synchronous step-down switching regulator. A unique Silent Switcher architecture, combined with spread spectrum frequency modulation, reduces EMI/EMC emissions by more than 25dB even with switching frequencies in excess of 2MHz, enabling it to easily pass the automotive CISPR25 class 5 peak and average limits. […]
