Author Archives: steve bush

3.8-32V automotive buck converters in TSOT26

Diodes has launched a series of automotive-compliant synchronous buck converters for delivering up to 3A in automotive point-of-load converters in 3 x 2.8mm TSOT26 packages With 2A and 3A ratings, AP6320xQ and AP6330xQ respectively can operate with inputs from 3.8 to 32V and over -40 to +125°C. 3A versions integrate 70/40mΩ (high/low-side) mosfets, or 125/68mΩ for the 2A parts. There are ...

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Automotive three-terminal capacitor packs 4.3μF into 0.5mm2

Murata has managed to compress 4.3μF into a three-terminal 0402 (1005 metric) package, and qualified it for automotive use. This is the surface-mount equivalent of a feed-through capacitor, with the end terminals connected together by a low-resistance direct path. This path is one end of the capacitor, whose other end is to be grounded via ...

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ISSCC: GaN PSU switches 400V at 50MHz

A blisteringly fast 400V monolithic gallium nitride power buck converter featured at the International Solid-State Circuit Conference this week. Its figures speak for themselves: 50MHz operation, sub-200ps dead-time, and 120V/ns slew rate at the switching node. The child of National Chiao Tung University and Realtek Semiconductor, both in Taiwan, the IC is all GaN-on-silicon, combining a ...

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ISSCC: Cunning one-chip mains PSU needs only external passives

At ISSCC 2022, the Leibniz University of Hannover presented a novel 50-60Hz universal mains ac-dc power supply that has almost all of its components on a single 3 x 7mm 0.18μm silicon-on-insulator die. The only external components are the output inductor and capacitor, both low-voltage parts. It can produce an adjustable 3.3 to 10Vdc from ...

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Silicon anode material licenced from Nexeon

Oxfordshire silicon anode firm Nexeon has has licensed its NSP-1 material to Korean giant SKC, an investor in Nexeon. “Silicon-graphite hybrid electrodes are now delivering superior performance in hybrid and EV vehicles,” said SKC v-p Junghwan Shin. This arrangement follows the investment and strategic partnership announced between the two companies in January, and represents further ...

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ISSCC 2022: Machine learning processors

It takes a lot of effort to avoid machine learning processors at this year’s IEEE International Solid-State Circuits Conference, as they popped up not only amongst digital processing papers, but also next to memory and analogue papers. For example, of all the thousands of companies designing ICs around the world, only four were invited to ...

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Isolated gate driver works up to 2.3kV

Infineon has created a family of single-channel isolated gate driver for IGBTs and silicon carbide mosfets with up to 300kV/μs common-mode transient immunity and up to +6  and -8.5 A typical peak current. Called 1ED332x, and branded ‘F3 Enhanced’, they come in 300mil wide DSO 16 packaging with 8mm creepage distance. Operation is expected with devices ...

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Automotive MCUs for SiC charging

STMicroelectronics has announced a microcontroller for electric vehicle on-board chargers, particularly those using silicon carbide power components. “Typical automotive MCUs in the market today cannot execute the charging-control algorithms at a rate that can support the higher SiC switching frequencies,” claimed ST. “Instead, additional DSP chips are needed specifically to handle the control loop.” The ...

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Low power and quick accurate low-voltage op-amps from Maxim

Maxim has quietly released a couple of op-amp families, one very low power and the other blending high speed, precision and low noise. MAX40023 and MAX40024 are single and dual amplifiers that will run from 1.6 to 3.6V, typically for 17μA per channel. A shut-down pin typically takes this to 55nA. Both inputs and outputs swing ...

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