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Driver for low emission switch regulator

A regulator and low-side switch technology, applied in the electronic field, can solve the problems of increasing cost and occupying space

Active Publication Date: 2016-11-23
STMICROELECTRONICS CHINA INVESTMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But using additional wires takes up expensive space on the IC and can require additional chip pins, both of which increase the cost of the IC

Method used

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  • Driver for low emission switch regulator
  • Driver for low emission switch regulator
  • Driver for low emission switch regulator

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Embodiment Construction

[0026] This article uses characteristics to describe the subject of the invention to meet legal requirements. But the description itself is not used to limit the scope of this patent. On the contrary, the claimed subject matter may also be embodied in other ways or include combining other existing or future technologies with different steps or combinations of steps of the type described herein. In addition, although the terms "step" and / or "block" may be used herein to refer to different elements of the method used, the term should not be interpreted as any specific order between the various steps disclosed herein, unless the various steps are clearly described. Order.

[0027] figure 1 A synchronous switching regulator 100 is shown that includes a high-side switch (M1) 102 and a low-side switch (M2) 104, each including an n-type MOSFET. Alternative embodiments may include other types of transistors or electrical switching elements. The drain of the high-side switch 102 is cou...

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PUM

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Abstract

The invention relates to a driver for a low emission switch regulator, and specifically relates to a switch regulator, which is used for reducing conducted emission caused when the regulator is switched from one transistor switch to another. The switch regulator comprises at least one switch. A diode is connected from the source electrode of at least one transistor to the drain electrode thereof. When the regulator is switched from one transistor switch to another, a circuit device enables the switch to be conducted with a relatively-small current limit signal; and when the diode of the switch crossing the current cut-off finishes reverse recovery, a new switch is conducted completely and quickly.

Description

Technical field [0001] The present invention relates to the field of electronic technology, and more specifically, to a driver for a low emission switching regulator. Background technique [0002] Automotive electronics are different from consumer electronics. For automotive electronic products, each integrated circuit (IC) must be tested for electromagnetic compatibility, which is commonly referred to as "EMC testing" in the art. The EMC requirements of consumer electronics are far less stringent than those of automotive electronics. More specifically, an IC should not introduce too much noise in its power supply line or bus through parasitic inductance. When the current (di / dt) is introduced too quickly through the power supply side of the IC, the IC will experience a lot of voltage noise due to the parasitic inductance in the bonding wire. For automotive electronics, this noise can cause malfunctions or damage the IC. [0003] The trend towards smaller power, portable device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/08H03K17/16
CPCH02M1/08H02M1/44H02M3/158H03K17/166H02M3/1588H03K17/687
Inventor 蒋明
Owner STMICROELECTRONICS CHINA INVESTMENT