Smart Ultrasonic Welding – A Versatile Interconnection Technology for Power Electronics Packaging

2021 ◽  
Vol 2021 (HiTEC) ◽  
pp. 000112-000117
Author(s):  
Matthias Hunstig ◽  
Sebastian Holtkämper ◽  
Lars Helmich ◽  
Michael Brökelmann
Keyword(s):  
Process Control ◽  
Power Electronics ◽  
New Technology ◽  
Ultrasonic Welding ◽  
Wire Bonding ◽  
Ultrasonic Power ◽  
Advanced Process Control ◽  
Welding Equipment ◽  
Battery Packs ◽  
Ultrasound System

Abstract Ultrasonic welding is a common and indispensable technology in the packaging of power electronics. Typical applications are terminals and power contacts, e.g. in motor drive or inverter modules, as well as busbar connections. The process control requirements for welding power electronics connectors or bus bars, e.g. on batteries, are increasingly overlapping with requirements typical for heavy wire bonding. Smart ultrasonic welding is a new technology combining the force and ultrasonic power of conventional ultrasonic welding equipment with the flexibility, precision, speed and advanced process control features of wire bonding machines. This contribution discusses the characteristics of smart welding equipment and presents process results for two different smart welding applications. On the low power end, smart welding and wire bonding are compared in the production of cylindrical cell battery packs, using a 100 W ultrasound system and aluminium connectors. Towards the high power end, 3 × 1.2 mm2 copper leads are welded to DBC with a contact area of 3 × 3 mm2, using a 1.5 kW ultrasound system. Both applications demonstrate advantages of smart welding over conventional ultrasonic welding.

Model-based advanced process control of coagulation

2002 ◽  
Vol 45 (4-5) ◽  
pp. 9-17 ◽  
Author(s):  
C.W. Baxter ◽  
R. Shariff ◽  
S.J. Stanley ◽  
D.W. Smith ◽  
Q. Zhang ◽  
...  
Keyword(s):  
Water Treatment ◽  
Process Control ◽  
New Technology ◽  
Drinking Water Treatment ◽  
Pilot Scale ◽  
Operating Conditions ◽  
Ann Model ◽  
Real Time Control ◽  
Advanced Process Control ◽  
Model Based

The drinking water treatment industry has seen a recent increase in the use of artificial neural networks (ANNs) for process modelling and offline process control tools and applications. While conceptual frameworks for integrating the ANN technology into the real-time control of complex treatment processes have been proposed, actual working systems have yet to be developed. This paper presents development and application of an ANN model-based advanced process control system for the coagulation process at a pilot-scale water treatment facility in Edmonton, Alberta, Canada. The system was successfully used to maintain a user-defined set point for effluent quality, by automatically varying operating conditions in response to changes in influent water quality. This new technology has the potential to realize significant operational cost saving for utilities when applied in full-scale applications.

Failure Analysis on Power Trench MOSFET Devices with Copper Wire Bonds

2011 ◽  
Author(s):  
Huixian Wu ◽  
Arthur Chiang ◽  
David Le ◽  
Win Pratchayakun
Keyword(s):  
Failure Analysis ◽  
Copper Wire ◽  
New Technology ◽  
Analytical Techniques ◽  
Wire Bonding ◽  
Bonding Process ◽  
Wire Bonds ◽  
Copper Wire Bonding ◽  
Wet Chemical ◽  
Microelectronic Components

Abstract With gold prices steadily going up in recent years, copper wire has gained popularity as a means to reduce cost of manufacturing microelectronic components. Performance tradeoff aside, there is an urgent need to thoroughly study the new technology to allay any fear of reliability compromise. Evaluation and optimization of copper wire bonding process is critical. In this paper, novel failure analysis and analytical techniques are applied to the evaluation of copper wire bonding process. Several FA/analytical techniques and FA procedures will be discussed in detail, including novel laser/chemical/plasma decapsulation, FIB, wet chemical etching, reactive ion etching (RIE), cross-section, CSAM, SEM, EDS, and a combination of these techniques. Two case studies will be given to demonstrate the use of these techniques in copper wire bonded devices.

Increasing revenue and reducing cost through the use of advanced process control technology in the sugar industry

2016 ◽  
pp. 620-624
Author(s):  
Scott Kahre
Keyword(s):  
Process Control ◽  
Sugar Industry ◽  
Operating Cost ◽  
Control Technology ◽  
Advanced Process Control ◽  
Output Controller ◽  
Complex Processes ◽  
Unit Operations ◽  
Sugar Unit ◽  
Optimum Cost

Advanced process control technology can provide sugar processors the ability to realize major revenue enhancements and/or operating cost reductions with low initial investment. One technology in particular, model predictive control (MPC), holds the potential to increase production, reduce energy costs, and reduce quality variability in a wide variety of major sugar unit operations. These include centrifugal stations, pulp dryers, extractors, diffusers, mills, evaporating crystallizers, juice purification, and more. Simple payback periods as low as two months are projected. As a PC-based add-on to existing distributed control systems (DCS) or programmable logic controller (PLC) systems, MPC acts as a multi-input, multi-output controller, utilizing predictive process response models and optimization functions to control complex processes to their optimum cost and quality constraints.

Implementation and benefits of advanced process control for lithography CD and overlay

2003 ◽  
Author(s):  
Lena Zavyalova ◽  
Chong-Cheng Fu ◽  
Gary S. Seligman ◽  
Perry A. Tapp ◽  
Victor Pol
Keyword(s):  
Process Control ◽  
Advanced Process Control

Cost and revenue impact of advanced process control (APC) with an emphasis on run-to-run control (R2R)

2003 ◽  
Author(s):  
Timothy D. Stanley ◽  
Richard J. Markle ◽  
Brad Van Eck ◽  
Brian K. Cusson ◽  
Matthew A. Purdy ◽  
...  
Keyword(s):  
Process Control ◽  
Advanced Process Control
Sign in / Sign up

Export Citation Format

Share Document