Detection of low output voltages for power converters

US10608538B1 · kind B1 · utility

Assignee

• TEXAS INSTRUMENTS INCORPORATED · US

Inventors

• Manuel Wiersch · Freising, DE
• Gerhard Thiele · Dachau, DE

Key dates

• Filing date: Jan 25, 2019
• Grant date: Mar 31, 2020
• Expiry date: Jan 25, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B70/10
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A device includes a first transistor coupled to a ground node and a current source. The first transistor includes a control terminal coupled to a reference voltage source, where the current source is coupled to an input voltage source. The device includes a second transistor coupled to the input voltage source, where the second transistor includes a control terminal coupled to the first transistor. The device includes a third transistor coupled to the second transistor, where the third transistor includes a control terminal coupled to an output voltage node. The device includes a fourth transistor coupled to the third transistor, where the fourth transistor includes a control terminal coupled to the output voltage node. The device includes a fifth transistor coupled to the fourth transistor and a resistor, where the fifth transistor includes a control terminal coupled to the fourth transistor. The resistor is coupled to the ground node.