摘要 |
An output stage of a switching DC-DC converter (110) includes a pair of transistors (220, 240) and a bias transistor (230) connected between the transistors (220, 240). A voltage regulator (210) generates a bias voltage to bias a control terminal of the bias transistor (230) with a fixed bias voltage. The voltage regulator (210) is operable in a full-power mode and a low-power mode. The voltage regulator (210) consumes larger current in the full-power mode than in the low-power mode. At low load currents, the voltage regulator (210) is operated in the low-power mode when both the transistors in the pair of transistors (220, 230) are off, and in the full-power mode otherwise. |
申请人 |
TEXAS INSTRUMENTS INCORPORATED;TEXAS INSTRUMENTS JAPAN LIMITED;VEERAMREDI, SRINIVAS, V.;SUBRAMANIAM, MURUGESH, P.;PARTHASARATHY, HARIKRISHNA |
发明人 |
VEERAMREDI, SRINIVAS, V.;SUBRAMANIAM, MURUGESH, P.;PARTHASARATHY, HARIKRISHNA |