Switching regulator with capacitance near load

An electronic device, comprising:

• a voltage regulator having an input terminal to couple to a voltage source and an output terminal, a first transistor to intermittently form an electrical circuit between the input terminal and the output terminal fabricated on a plurality of first integrated circuit (IC) chips, a rectifier coupling an intermediate terminal in the electrical circuit between the input terminal and the output terminal to ground, and a controller that drives the first transistor;
• a load fabricated at least partially on a second integrated circuit (IC) chip that receives power from the output terminal of the voltage regulator;
• and
• a capacitor located near the second IC chip that provides the necessary capacitance to filter current entering the load and create a substantially DC voltage at the load.

An electronic device, comprising:

• a voltage regulator having an input terminal to couple to a voltage source and an output terminal, a first transistor to intermittently form an electrical circuit between the input terminal and the output terminal, a rectifier coupling an intermediate terminal in the electrical circuit between the input terminal and the output terminal to ground, and a controller that drives the first transistor;
• an electrical connector having a parasitic inductance;
• and
• a load having active elements coupled by the electrical connector to the output terminal, the load further including an input capacitor between the output terminal and ground, wherein in conjunction with the parasitic inductance of the electrical connector, the input capacitor provides a filter so that the voltage to the active elements of the load remains substantially constant.

An electronic device, comprising:

• a voltage regulator having an input terminal to couple to a voltage source and an output terminal, a first transistor to intermittently form an electrical circuit between the input terminal and the output terminal fabricated on a first integrated circuit (IC) chip that is mounted on a first printed circuit board, a rectifier coupling an intermediate terminal in the electrical circuit between the input terminal and the output terminal to ground, a controller that drives the first transistor;
• a load fabricated at least partially on a second integrated circuit (IC) chip that is mounted on a second printed circuit board, the load receiving power from the output terminal of the voltage regulator;
• and
• a capacitor located on the second printed circuit board, the capacitor providing, in conjunction with inductance located between the input node and the load, a filter that creates a substantially DC voltage at the load.