Micrel's MIC9130 and MIC9131 DC-DC controllers convert telecom line voltages to logic levels. The MIC9130/1 feature built-in high-voltage start-up circuitry that allows the devices to be connected directly to telecom line voltages. The 48 V nominal telecom line voltage is subject to large voltage transients; therefore the MIC9130 can operate to 180 V to ensure safe operation. The built-in start-up circuitry saves board space by integrating up to five external components. Typically the MIC9130/1 is used to step down the telecom line voltage to a logic-level voltage like 3,3 V.
The devices allow the design of very high-speed forward or flyback DC-DC power supplies. The MIC9130, for example, can switch an external MOSFET at 1,5 MHz, allowing very small external components to be used. The delay from sensing a current limit to shutting off the output driver is 34 ns, a threefold improvement over industry standard. This short delay time allows them to operate at higher frequencies.
The MIC9130 features a 50% maximum duty cycle while the MIC9131 has a 75% maximum duty cycle. The MIC9130/1 are constant frequency current-mode PWM controllers. These devices can easily be synchronised, making them ideal for noise-sensitive telecommunications applications. Both devices have soft-start functions to reduce inrush current during start-up. Low quiescent current of 1,3 mA and a resistor-programmable current sense threshold allows high-efficiency designs for low output power converters.
The MIC9130BM and MIC9131BM are housed in narrow-body SO-16 packages.
Webinar – How to safeguard your load and power supply
Power Electronics / Power Management
Infineon’s latest webinar: ‘How to safeguard your load and power supply’ covers best practices with its PROFET guard products.
Read more...IGBT7 modules deliver high power density
Power Electronics / Power Management
Microchip launches six variants of its DualPack 3 modules targeting high-growth motor drive, data centre, and sustainability applications.
Read more...High-power DC-DC converters Avnet Abacus
Power Electronics / Power Management
Vicor’s power modules range in power levels from 750 W up to 2 kW, with a top power density of 5 kW/in3.
Read more...Power MOSFET in a PowerFLAT package Future Electronics
Power Electronics / Power Management
The ST8L60N065DM9 from STMicroelectronics is a 600 V N-channel Super-Junction power MOSFET that offers excellent performance in a compact surface-mount package.
Read more...Microlens to increase solar panel efficiency
Power Electronics / Power Management
Researchers at the Fraunhofer ISE have recently developed a novel micro-concentrated photovoltaic module that achieves higher efficiency and reduced production costs.
Read more...Rugged PSU for challenging conditions Conical Technologies
Power Electronics / Power Management
Built for rugged reliability, the Mibbo MFC Series delivers stable, efficient power in environments where moisture, dust, and temperature extremes are everyday challenges.
Read more...ABB’s Mission to Zero drives South Africa’s energy transition ABB Electrification Products
Power Electronics / Power Management
ABB Electrification is charting a bold path towards a net-zero future with its Mission to Zero programme, a blueprint that combines energy efficiency, electrification, and digital innovation to accelerate the transition to clean energy.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version