US 11,455,265 B2 · Data bus driver with electrical energy dump

Abstract

A group of transistors is configured to drive a bus at time slots, to express data on the bus. The group of transistors dissipates an amount of electrical energy when driving the bus to a logic level opposite to a logic level present on the bus in an immediate preceding time slot. The group of transistors is arranged to dump another amount of electrical energy. Dumping of the other amount of electrical energy is responsive to driving the bus to a logic level that is the same as present on the bus in an immediate preceding time slot. The dumped amount of electrical energy is equivalent to the amount of energy dissipated by the transistors when transitioning the bus to a different logic level. Other aspects are also described.

Claims19

Dependent claims

A system of data bus drivers, comprising:

a first bus driver configured to be coupled to a bus to drive the bus at a plurality of first time slots;
and
a second bus driver configured to be coupled to the bus to drive the bus at a plurality of second time slots interleaved with the first time slots,
wherein the first bus driver has a dump circuit configured to dump a first amount of electrical energy when the first bus driver is not transitioning a logic level of the bus in one slot of the first time slots relative to a preceding slot of the second time slots that was driven by the second bus driver, the first amount of electrical energy being equivalent to a second amount of electrical energy that is dissipated by the first bus driver when the first bus driver is transitioning the logic level of the bus.

1 more element

Dependencies are inferred from the claim text.

Data bus driver with electrical energy dump

Life of this patent

Data bus driver with electrical energy dump

Life of this patent

Abstract

Claims19