Patent ID: 9461642
Filing Date: 2016-10-04
CPC Classification: H03K

Claim Text:
1. A pulse generator for providing a pulse signal to a capacitive load, comprising: a primary-side driver, operable to receive a low voltage differential signal, and having a differential amplifier, a top multi-stage driver and a bottom multi-stage driver, a top primary side output switch, and a bottom primary side output switch; wherein the differential amplifier generates complementary output signals, and delivers one to the top multi-stage driver and the other to the bottom multi-stage driver; wherein the top multi-stage driver and bottom multi-stage driver comprise multiple stages of complementary bipolar transistors; wherein the top primary side output switch and bottom primary side output switch comprise field effect transistors (FETs), and are operable to provide amplified complementary output signals; a gate-drive isolation transformer having a primary winding driven by the output signals from the primary side driver, and having a number of secondary windings; a set of secondary-side top drivers, each driven by one of the secondary windings, and each comprising multiple stages of complementary bipolar transistors; a set of secondary-side bottom drivers, each driven by one of the secondary windings, and each comprising multiple stages of complementary bipolar transistors; a top secondary side output switch, comprising a set of FETs arranged in series, each receiving the output of a secondary-side top driver; and a bottom secondary side output switch, comprising a set of FETs arranged in series, each receiving the output of a secondary-side bottom driver; wherein the top secondary side output switch charges the capacitive load when on, and the bottom secondary side output switch discharges the capacitive load when on.