TI launches three power-management devices at APEC 2022

At this year’s Applied Power Electronics Conference (APEC), Texas Instruments will debut two buck converters and an LDO regulator. Ahead of the conference, Texas Instruments said the trio will help engineers mitigate EMI and noise in their systems.

The two buck converters are the 36V, 3A LMQ66430 and LMQ66430-Q1 buck which integrate two input bypass capacitors and one boot capacitor, enabling engineers to meet CISPR 25 Class 5 EMI standards and with what is claimed to be industry-leading 1.5-microA quiescent current (IQ) and reduced bill of materials costs. 

Completing the line-up is the TPS7A94, a low dropout (LDO) linear regulator which combines a low noise of 0.46  microV RMS, which is at least 42 per cent lower than competing devices, said TI, with a high power supply rejection ratio. This combination helps designers improve system accuracy and precision in highly sensitive applications such as medical equipment, wireless infrastructure and radar.

At the TI booth, the company will demonstrate how its products can help engineers overcome critical power-management design challenges such as increasing power density, lowering EMI or enabling safer systems with high voltage isolation.

To demonstrate increasing power density through an 800V, 11kW three level, three phase, GaN-based active neutral-point clamped (ANPC) inverter power stage, there will be a 6.6kW ANPC inverter reference design with the 600V LMG3422R030 GaN FET field effect transistor (FET), which enables a high switching frequency to reduce magnetics size, increase power density, and achieve a 98.5 per cent peak efficiency in electric vehicle (EV) charging and solar power applications. 

To lower EMI in automotive and industrial applications and improve filter size, there will be a demo using the LMQ66430-Q1 low-EMI buck converter which reduces EMI in real time by leveraging a proprietary dual random spread-spectrum technique. The demo will also show how integrated capacitors simplify designs.

The third demonstration for high voltage isolation technologies will be based on an Automotive Safety Integrity Level (ASIL) D safety concept-assessed high-speed traction inverter reference design. The demo leverages TI’s UCC5870-Q1 isolated gate driver and UCC14240-Q1 isolated DC/DC bias supply module to enable high system efficiency with 30A of peak current, while maintaining system reliability through advanced high-voltage isolation, protection and diagnostics.

A 7kW onboard-charger demo features TI’s REF35 low-IQ voltage reference for precision amplifiers, LMG3522R030-Q1 automotive GaN FET and the TMS320F280039C C2000 real time microcontroller. The demo helps to minimise power consumption and achieve a minimal 96 per cent system efficiency, said TI, for extending battery life in EV and hybrid EV powertrain systems.

A further demo uses the TPS7A94 low noise LDO to enhance the power and signal integrity of low-voltage devices such as voltage-controlled oscillators, ADCs, DACs and high end processors. The demo showcases the impact of different stimuli on a power supply using the TPS7A94, claimed to be the industry’s lowest-noise LDO, which can achieve 0.46 microV RMS of noise from 10Hz to 100kHz.

TI will be at booth 514 at APEC 2022 (20 to 24 March 2022) in Houston, Texas, USA.


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