PROBLEM TO BE SOLVED: To provide a step-up/step-down type switching regulator which is capable of preventing a right-half-plane-zero property from appearing while suppressing increase of cost and indicates a response property similar to a step-down property.SOLUTION: In the switching regulator, a MOS transistor Q1 (first switch) and a MOS transistor Q2 (second switch) are turned on/turned off in a complementary manner in accordance with an output voltage Vand in a step-up/step-down mode, an ON duty of a MOS transistor Q3 (third switch) is fixed, such that the MOS transistor Q3 (third switch) and a MOS transistor Q4 (fourth switch) are turned on/turned off in a complementary manner.SELECTED DRAWING: Figure 1
【課題】コストの増大を抑えながらright-half-plane-zero特性の出現を防止することができ、降圧特性と同様の応答特性を示す昇降圧型スイッチングレギュレータを提供する。【解決手段】出力電圧VOUTに応じてMOSトランジスタQ1(第1スイッチ)及びMOSトランジスタQ2(第2スイッチ)が相補的にオン/オフし、昇降圧モード時にMOSトランジスタQ3(第3スイッチ)のオンデューティDを固定してMOSトランジスタQ3(第3スイッチ)及びMOSトランジスタQ4(第4スイッチ)が相補的にオン/オフするスイッチングレギュレータ。【選択図】図1
SWITCHING REGULATOR
スイッチングレギュレータ
2016-12-28
Patent
Elektronische Ressource
Japanisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |