Hochspannungstolerante Pegelschieberschaltung

Details

Veröffentlichungs-Nr.

EP4727013

Anmeldetag

15. September 2025

Veröffentlichung

15. April 2026

Rechtsraum

EP

IPC

H03K3/356

Abstract

According to an embodiment, a high-voltage tolerant level shifter circuit (400, 500) includes input terminals for receiving complementary PWM input signals (CMDP, CMDN), output terminals for providing complementary output signals (OUTP, OUTN), and a latch circuit for translating the input signals to the output signals. The circuit has terminals for receiving floating ground (VFG) and supply (VFS) voltages, and a control circuit (802) to ensure operation within a known state. The latch circuit includes cross-coupled PMOS and NMOS transistors. NMOS input transistors are coupled to the latch circuit through cascode NMOS transistors. The floating voltages are generated based on a pre-regulated supply voltage (103), tracking ground (GND) over a first voltage range and controlled by ratio relationships over a second range. A monitoring circuit (600) generates control signals based on the pre-regulated supply voltage. The level shifter enables efficient voltage domain transfers at higher operating supplies using low-voltage devices, avoiding additional mask layers and reducing manufacturing costs and complexity.

Anmelder

Firma

STMicroelectronics International N.V.

Land

🇨🇭 Schweiz