一种用于冷启动瞬态、具有自动拓扑与占空比切换功能的0.55W、88%、78kHz、48V转5V斐波那契混合DC-DC变换器IC

For 48 V mild hybrid vehicles, a sub-0.5 W, 48 V-to-5 V dc–dc converter fulfilling: 1) high efficiency with small volume; 2) constant switching frequency of less than 500 kHz to avoid the frequency band of AM radio; and 3) constant output voltage (VOUT) against the sudden drop of input battery voltage (VIN) under cold cranking is required. To meet the requirements, a 0.55 W, 88%, 78 kHz, 48 V-to-5...