{"id":2313,"date":"2026-09-23T07:15:21","date_gmt":"2026-09-23T07:15:21","guid":{"rendered":"https:\/\/ovartech.com\/?p=2313"},"modified":"2026-09-23T07:15:21","modified_gmt":"2026-09-23T07:15:21","slug":"how-to-control-dc-dc-converter","status":"publish","type":"post","link":"https:\/\/ovartech.com\/ru\/how-to-control-dc-dc-converter\/","title":{"rendered":"How to Control Standby Power Consumption of the DC-DC Converter When the Vehicle Is Off"},"content":{"rendered":"

How to Control Standby Power Consumption of the DC-DC Converter When the Vehicle Is Off<\/span><\/strong><\/span><\/h1>\n

In modern electric and hybrid vehicles, virtually all low-voltage electrical systems rely on the high-voltage DC-DC converter for power, making standby (quiescent) power control of the DC-DC critical to prevent unnecessary drain of the high-voltage battery during key-off periods.<\/strong> Effective standby power management typically targets total DC-DC quiescent consumption below 1\u20132 W (or even lower in advanced designs) through multi-level sleep modes, intelligent enable\/disable strategies, and ultra-low-power control circuits.<\/span><\/p>\n\n\n\n
\"DC-DC<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

1. Why Standby Power Control Matters<\/span><\/strong><\/h1>\n

When the vehicle is switched off, the high-voltage battery remains the ultimate energy source. Continuous operation of the DC-DC converter at normal efficiency would slowly deplete the HV battery, reducing available range and potentially triggering low-voltage warnings or protection modes. In addition, many always-on loads (immobilizer, alarm, telematics, keyless entry, clock) still require a small amount of 12 V power. Therefore, the DC-DC must support an extremely low-power standby state while remaining ready to wake up quickly when needed.<\/span><\/p>\n

Ovar Tech\u2019s DC-DC converters (1 kW\u20133 kW range) and integrated OBC + DC-DC modules are designed with advanced low-standby architectures to meet these stringent vehicle-level requirements.<\/span><\/p>\n

2. Typical Standby Power Targets<\/span><\/strong><\/h2>\n

Automotive OEMs usually specify:<\/span><\/p>\n