【应用】圣邦微3轨电源定序器SGM822XMS8G/TR用于VR 3D相机，支持可编程上电/下电顺序延时

时间： 2022-11-30 来源：世强

技术问答

某客户做了一款4K VR 3D相机产品，能够拍摄4K@30FPS视频，主控使用的是AI SOC，性能十分强大，图像传感器使用的是索尼的，由于相机需要高速处理数据，需要搭配内存条，客户选用的是三星的LPDDR4内存，LPDDR内部有三组电压，分别是VDD1、VDD2与VDDQ，上电时对电源有时序要求：VDD1早于或者同时和VDD2上电；VDD2早于或同时和VDDQ上电，这时就需要用到一款3轨电源定序器，客户选用的是圣邦微的SGM822XMS8G/TR，通过将三个电源的启用或关闭引脚拉高或拉低来控制它们的上电和下电顺序，以满足LPDDR4的供电需求。

图1：SGM822XMS8G/TR简略应用框图

在3D VR相机上采用SGM822XMS8G/TR，因其具有以下优势：

1、低静态电流， Iq（典型值）仅为36μA；

2、支持可编程上电/下电顺序延时；

3、具有3轨电源顺序控制，满足LPDDR4供电需求；

4、工作环境温度范围为-40℃至+125℃，满足工作环境要求。

综上所述，圣邦微的3轨电源定序器SGM822XMS8G/TR适合用于VR 3D相机。

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【选型】圣邦微时序控制芯片辅助基站HUB设计，电源电压范围为2.7V~5.5V，拥有3路时序控制引脚

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数据手册 - SGMICRO - REV. A.2 - APRIL 2024 PDF 英文下载查看更多版本

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型号- SGM822XMS8G/TR

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SGMICRO（圣邦微）信号链和电源管理芯片选型指南

描述- SGMICRO specializes in high-performance and high-quality analog and mixed-signal integrated circuits, and is committed to building a comprehensive portfolio of the highest quality analog and mixed-signal integrated circuits to address all customer needs.

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

选型指南 - SGMICRO - 2024/6/11 PDF 英文下载

SGMicro（圣邦微） SGM3157 数据手册

型号- SGM3157YC6,SGM3157YC6/TR,SGM3157

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SGMICRO（圣邦微）ADC/DAC选型指南

型号- SGM51242R8,SGM5353-16,SGM8634C,SGM71612R82Z,SGM71612R81ZXG/TR,SGM51652H8,SGM58200,SGM61720,SGM5209-14,SGM58201,SGM71612R82,SGM51652H4,SGM42403,SGM452,SGM5347-12,SGM51652H4XTS38G/TR,SGM51652HXTS16G-S/TR,SGM58602,SGM71612R82M,SGM2048,SGM58600,SGM71612R81,SGM58601,SGM5347-10,SGM58031Q,SGM42402,SGM42401,SGM8T245XS,SGM71612R81Z,SGM48751X,SGM12UB1D2,SGM51652HX,SGM4029A,SGM6143X,SGM4573,SGM7SZ244,SGM8253,SGM2033,SGM51242R4,74LVC245A,SGM51652H4XTS38G-S/TR,SGMXXXXX,SGM51242R2,SGM58600XTRL20G/TR,SGM5351-16,SGM61030,SGM51622S8XLFH64G/TR,SGM4875XX,SGM58600XSS20G/TR,SGM25701,SGM8270,SGM51610S,SGM58601XSS28G/TR,SGM2050,SGM58031,SGM5200,SGM862,SGM71612R8XX,SGM6130X,SGM2054,SGM860,SGM8277,SGM,SGM51622H,SGM204X,SGM2059,SGM51622D,SGM51610C,SGM89XB,SGM5202-14,74AHC14,SGM61410,SGM5353,SGM51613HXTS16G/TR,SGM71612R8,SGM51652HBXTS38G-S/TR,74AHC08,SGM61411,SGM5208-14,SGM8610,SGM51652H,SGM58601XTQK28GITR,SGM71612R81ZXTSG16G/TR,SGM51652D,SGM5348-10,SGM51652S8XLFH64G/TR,SGM5348-8,SGM5348-12,SGM5349,SGM5355-16,GRM2030,SGM51613HXTQE16G/TR,SGM823,SGM61630,SGM71612R81ZXTS16G/TR,SGM51613H,SGM51622S8,SGM5349-16,SGM8249,SGM51613D,SGM8255B,SGM5860X,SGM5352-16,SGM05FB4D2,SGM4027A,SGM51652H8XTS38G/TR,SGM4551,SGM05FB8D2,SGM5200Q,SGM51652S8,SGM5347-8,SGM80XB

选型指南 - SGMICRO - May 2024 PDF 英文下载

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型号- SGM7SZ08YXDM6G/TR,SGM7SZ08YN5G/TR,SGM7SZ08,SGM7SZ08YUDL6G/TR,SGM7SZ08YC5G/TR

数据手册 - SGMICRO - REV. A. 1 - 2016年05月18日 PDF 英文下载

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