Unlock instant, AI-driven research and patent intelligence for your innovation.

Pin multiplexing chip

A pin multiplexing and chip technology, applied in the field of power electronics, can solve the problem of many chip pins, and achieve the effect of simplifying the design and saving pins

Active Publication Date: 2019-08-09
NANJING SILERGY SEMICON TECH CO LTD
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present invention provides a pin multiplexing chip to solve the problem of more chip pins in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pin multiplexing chip
  • Pin multiplexing chip
  • Pin multiplexing chip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.

[0032] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0033] Meanwhile, it should be understood that in the following description, "circuit" refers to a conductive loop formed by at least one element or sub-circuit through electrical connection or electromagnetic connection. When an element or circuit is said to be "connected to" another eleme...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a pin multiplexing chip, which can realize the setting of working frequency and the recognition of the pressing and loosening actions of a key through one multiplexing pin. Anadjusting resistor is provided and the adjusting resistor is connected with the key switch and the multiplex pin at the same time, and the working frequency is adjusted by changing the resistance value of the adjusting resistor. According to the pin multiplexing chip provided by the invention, a pin of the chip is saved, so that the design of a peripheral circuit is simplified.

Description

technical field [0001] The invention relates to a power electronic technology, more specifically, to a pin multiplexing chip used in battery charging management. Background technique [0002] In the battery charging management chip, the frequency control and button detection scheme is based on the existing technology, such as figure 1 Shown: Frequency setting needs to use a frequency setting pin FREQ, key recognition needs a key identification pin KEY. [0003] The frequency control scheme in the prior art is illustrated here by taking the peak current type switching power supply circuit (such as buck and boost circuit) as an example, that is, the current detection signal V representing the inductor current IL reaches the peak threshold V C Then generate a reset signal RSET to turn off the power tube in the power stage circuit; the frequency control circuit is controlled by the frequency control capacitor C OSC , a switch K3, a current source I1, and a second comparator C...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H03M11/20
CPCH03M11/20Y02E60/10
Inventor 殷明星邓甫华
Owner NANJING SILERGY SEMICON TECH CO LTD