Global DC-DC Power Supply Market By Type (<5W, 5-10W, 11W-50W, 51W-100W, and 100W-250W), By Application (Computer & office, Mobile communications, Consumer, Telecom/Datacom, Industrial, LED lighting, Wireless power & charging, and Military & aerospace), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2019-2028