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* Semiconductor maker International Rectifier Corp. of El Segundo said it would sell its power control systems business to Vishay Intertechnology Inc. for about $290 million. The company said it was jettisoning the unit to focus on high-performance semiconductors and other advanced power-management products.

* GlaxoSmithKline agreed to pay $63.8 million to settle a lawsuit’s claims that it promoted its antidepressant drug Paxil for use by children and adolescents while withholding negative information about its safety and effectiveness.

* Fair Isaac Corp., which designs credit scores that help banks decide whether consumers should get loans, said Thomas Grudnowski had stepped down as chief executive and board member, effective immediately. Charles M. Osborne, the Minneapolis-based company’s chief financial officer, was named as the CEO’s temporary replacement.