Linear Technology has débuted the LTM4620, a dual 13 A per output or single 26 A output DC/DC μModule step-down regulator that delivers up to 100 A when four devices are current shared. The device is a complete DC/DC regulator system in a 15 x 15 x 4,41 mm LGA package, including inductors, power stages and all control circuits.
For optimum heat dissipation, a patented top-side heatsink removes heat quickly and evenly. With 200 LFM air flow, 12 VIN to 1,0 VOUT and full load of 26 A (or 13 A per output), the IC’s internal temperature rises only 60°C above ambient. With the addition of an external heatsink to the top of the package and 200 LFM air flow, the temperature rise is only 40°C.
The LTM4620 is designed to convert 5 V to 12 V inputs to high-power, low-voltage point-of-load system rails such as 2,5 V to as low as 0,6 V. An accurate reference and an internal remote sense amplifier guarantee ±1,5% accurate output regulation over line, load and temperature. Sensing the voltage at the load compensates for voltage drops caused by PCB trace impedance.
Applications include mezzanine boards such as ATCA and microTCA systems, point-of-load regulation for advanced processors, ASICs and recently introduced 28 nm FPGAs as well as high-speed SERDES.
The device features fast short-circuit protection where a current foldback technique reduces IOUT to a minimum, preventing the regulator from overheating while protecting the load as well as the upstream power supply. Once the short-circuit condition is removed, the LTM4620 resumes operation.
The two outputs of the LTM4620 operate at 180° out of phase to minimise output ripple (when outputs share current) and input ripple, resulting in the use of fewer and smaller capacitors. For a 100 A design, four ICs accurately current share and operate at 90° out of phase.
General-purpose evaluation board Altron Arrow
DSP, Micros & Memory
Based on the 32-bit Arm Cortex-M7 S32K3 MCU in a 172 HDQFP package, the S32K3X4EVB-T172 offers dual cores configured in lockstep mode, ASIL D safety hardware, and HSE security engine.
Read more...Zero drift current shunt monitors Altron Arrow
Power Electronics / Power Management
The NCS21671 and NCV21671 from onsemi are a series of voltage output current sense amplifiers offered in gains of 25, 50, 100, and 200 V/V.
Read more...Schneider Electric partners with Drakenstein Municipality Schneider Electric South Africa
Power Electronics / Power Management
Drakenstein Municipality, situated in Paarl in the Western Cape, is one of the first distribution utilities globally to implement Schneider Electric’s green, SF6-free RM AirSeT switchgear with pure air technology and native digital connectivity.
Read more...Wi-Fi 6/BLE module enables rapid development Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Telit Cinterion has announced the WE310K6, a fully integrated, low-power module featuring dual-band, dual-stream Wi-Fi 6, and dual-mode Bluetooth/BLE.
Read more...E-Mobility: navigate safety, interoperability and conformance Concilium Technologies
Power Electronics / Power Management
Although the concept of electric vehicles is not a new one, the market remains in its infancy, and is not well-regulated or fully operational. This presents a number of challenges for manufacturers throughout the EV and EVSE ecosystem.
Read more...Webinar: Decarbonise with industrial drives
Power Electronics / Power Management
Infineon's TRENCHSTOP IGBT7 and CoolSiC technologies increase the efficiency of your industrial drive design, ultimately resulting in cost savings for you, and a more sustainable future for all.
Read more...Analysis of switch-mode power supply: inductor violations Altron Arrow
Editor's Choice Power Electronics / Power Management
Common switch-mode power supply (SMPS) design errors are discussed, and their appropriate rectification is specified, with details on complications that arise with the power stage design of DC-DC switching regulators.
Read more...Microsoft Windows IoT on ARM Altron Arrow
Computer/Embedded Technology
This expansion means that the Windows IoT ecosystem can now harness the power of ARM processors, known for their energy efficiency and versatility.
Read more...Microchip introduces ECC608 TrustMANAGER Altron Arrow
Circuit & System Protection
To increase security on IoT products and facilitate easier setup and management, Microchip Technology has added the ECC608 TrustMANAGER with Kudelski IoT keySTREAM, Software as a Service (SaaS) to its Trust Platform portfolio of devices, services and tools.
printer friendly version