Intersil Americas Inc.

Claudio Collura

Vinod A Lalithambika

Allan Richard Warrington

Neil E Robinson

A controller, for use with an SMPS DC-DC converter, includes a PWM/PFM generator and a switch driver. The PWM/PFM generator simultaneously generates CTRLand CTRLsignals in dependence on a CTRL signal. The switch driver generates a drive signal in dependence on both the CTRLand CTRLsignals. The drive signal is used to control a power switch of the DC-DC converter. The CTRL signal is generated in dependence on a feedback signal indicative of an output voltage or current of the DC-DC converter. Regardless of the mode of the DC-DC converter, the CTRLsignal is used to control a peak current in an inductor of the DC-DC converter, and the CTRLsignal is used to control a switching frequency of the power switch. In certain embodiments, both the CTRLand CTRLsignals are varied in dependence on the feedback signal when the DC-DC converter is in a PWM-PFM mode.

PWM/PFM controller for use with switched-mode power supply

A circuit comprises a plurality of segments and a clamp circuit. Each of the plurality of segments comprises a bond pad coupled to a multi-bonded pin via a respective bond wire and a conductor coupling the bond pad to a respective internal connection. The bond pad from each of the plurality of segments is coupled to the same multi-bonded pin. The clamp circuit comprises a plurality of input pins and a plurality of clamp transistors. Each input pin is coupled to the bond pad of a respective one of the plurality of segments via the respective conductor. Each clamp transistor is coupled to a respective one of the input pins, wherein each of the plurality of clamp transistors is configured to prevent a voltage on the respective conductor from exceeding a respective voltage limit.

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Hertford, United Kingdom

Claudio Collura