Novel low-power-consumption MIPI current mode driver

A low power consumption, current mode technology, applied in the direction of electrical components, output power conversion devices, etc., can solve the problems of unable to support high-speed output, large output overshoot, change of MIPI output common mode, etc., to achieve low power consumption performance, The effect of lowering the output impedance and improving the driving capability

Active Publication Date: 2020-01-21
杭州雄迈集成电路技术股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that when the outp and outn output terminals need to mount devices with large parasitic capacitance, for example, 3.3v protection switch tube or anti-detonator, etc., at the same time, the pre-emphasis pulse

Method used

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  • Novel low-power-consumption MIPI current mode driver
  • Novel low-power-consumption MIPI current mode driver

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[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0020] See figure 1 As shown, the present invention is a new type of low-power MIPI current mode drive, including MOS tube N1, MOS tube N2, MOS tube N3, MOS tube N4, MOS tube N5, MOS tube N6, MOS tube P1, MOS tube P2, MOS tube N3, MOS tube N4 are grounded, MOS tube P1, MOS tube P2 are connected to 1.1V power supply, MOS tube N1 and MOS tube N3 are connected with resistor R2, MOS tube N2 and MOS tube N3 are connected with resistor R1; P...

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Abstract

The invention discloses a novel low-power-consumption MIPI current mode driver, and relates to the technical field of pre-emphasis current mode drive. The circuit comprises MOS tubes N1 to N6 and MOStubes P1, P2, N5 and N6, wherein the drain ends of the MOS tubes P1, P2, N5 and N6 are respectively connected with resistors R3 and R4; the resistors R3 and R4 are respectively connected with MOS tubes N7 and N8; when the MOS tube P1 outputs a current, the MOS tube P2 outputs a current, and the current is injected into the MOS tubes N7 and N8. Even if stray capacitance of outp and outn is very large, the appropriate pulse current injection can be adjusted, and the driving capacity of an MIPI output edge is improved, so the high-speed driving capacity of the MIPI is improved while low power consumption is guaranteed. According to the invention, a resistance matching scheme is added on the basis of the traditional MIPI pre-emphasis current mode drive, so the pre-emphasis pulse current can berandomly improved without generating output overshoot, and the MIPI common mode output is not influenced.

Description

technical field [0001] The invention belongs to the technical field of pre-emphasis current mode drive, and in particular relates to a novel low-power consumption MIPI current mode drive. Background technique [0002] The purpose of the MIPI Alliance is to establish interface standards for hardware and software in mobile devices such as smartphones and tablet computers. Through a set of standard hardware interfaces, various peripheral products and products from different suppliers can be connected to many processors or SOCs. Compatible docking. [0003] Existing pre-emphasis current-mode drivers such as figure 2 As shown, N1, N2, N3, and N4 are alternately turned on to complete the MIPI drive output, and N5, N6 are used to pre-emphasize the pulse current output to compensate for the line loss of the MIPI output. The disadvantage is that when the outp and outn output terminals need to mount devices with large parasitic capacitance, for example, 3.3v protection switch tube o...

Claims

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Application Information

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IPC IPC(8): H02M9/00
CPCH02M11/00
Inventor 张智印
Owner 杭州雄迈集成电路技术股份有限公司
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