Upi Semiconductor Corporation

Cheng-Ching Hsu

Chih-Lien Chang

Pei-Ling Hong

Yen-Hsun Wang

A DC-DC converting controller is disclosed. The DC-DC controller includes a current sensing unit, a parameter setting pin, a parameter setting unit and an error amplifier. The current sensing unit provides a sensing current. The parameter setting pin is coupled to an external parameter setting unit. The parameter setting unit is coupled to the current sensing unit and the parameter setting pin. The parameter setting unit has an internal parameter setting unit. The parameter setting unit generates a droop current according to the external parameter setting unit and the sensing current. The error amplifier includes a first input terminal and a second input terminal. The first input terminal receives an output feedback voltage and the second input terminal receives a first reference voltage. The second input terminal is coupled to a terminal of the internal parameter setting unit.

DC-DC converting controller

A multi-phase power controller is adapted for operating N power channels and is coupled to M drivers and an external system. The M drivers respectively have an enabling pin, and the multi-phase power controller includes a power state pin and M control pins. The power state pin is coupled to the enabling pin of each of the M drivers and the external system. The M control pins are coupled to the M drivers. In a power start period of the multi-phase power controller, the number of the power channels operated by the multi-phase power controller is less than N. After the power start period, the multi-phase power controller enables the M drivers through the power state pin and notifies the external system that a power start procedure has been completed through the power state pin.

Multi-phase power controller, multi-phase power control device and operation method of multi-phase power controller

A power managing apparatus, a DC-DC control circuit, and a method for enabling a chip are disclosed. The power managing apparatus has an enable pin and the enable pin is used to couple a first level control circuit. The power managing apparatus includes a second level control circuit and a level detecting circuit. The second level control circuit is coupled to the enable pin. The level detecting circuit is coupled to the enable pin and used to detect a control signal on the enable pin. The control signal is transmitted from the first level control circuit. The control signal has at least three levels according to operations of the first level control circuit and the second level control circuit.

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Zhubei, Taiwan

Cheng-Ching Hsu