概述

　　IH电饭锅是在传统电饭锅的基础上，采用电磁感应加热技术的一种能效更高的电饭锅(类似电磁炉)。但是市面上常见的IH电饭锅方案都是非隔离方案，220V交流电没有做安全隔离，电饭锅上一些金属部件对用户来说有触电的安全风险。本方案在控制面板上增加电源隔离器件和数据通信隔离器件，220V交流和用户可能触碰到的低压直流完全隔离开，保障用户安全，避免触电风险。

　　优势

　　· SGMICRO公司的DC/DC转换芯片SGM4684，集成原边控制器和H桥及驱动器，可直接驱动隔离变压器，将高压和用户可能触碰到的低压直流电进行隔离，保障用户安全，避免触电风险。输入电压2.5V至 5.5V，支持3.3V、5V或12V多种隔离输出电压，最大输出功率可达3W， -40℃~+125℃工作温度范围，满足控制面板对电压、功率和高温的工作环境需求，让系统更加安全可靠。

【SGM4684】

GENERAL DESCRIPTION

The SGM4684 is a dual, low on-resistance, low voltage, bidirectional, single-pole/double-throw (SPDT) CMOS analog switch designed to operate from a single 1.8V to 5.5V power supply. Targeted applications include battery powered equipment that benefit from low RON (0.4Ω) and fast switching speeds (tON = 25ns, tOFF = 28ns).

The on resistance profile is very flat over the full analog signal range. This ensures excellent linearity and low distortion when switching audio signals.

The SGM4684 is a committed dual single-pole/double-throw (SPDT) that consist of two normally open (NO) and two normally close (NC) switches. This configuration can be used as a dual 2-to-1 multiplexer.

SGM4684 is available in Green WLCSP-2.0×1.5-10B package.

FEATURES

• Low Voltage Operation: 1.8V to 5.5V

• Low On-Resistance: 0.4Ω (TYP)

• Low On-Resistance Flatness

• -3dB Bandwidth: 13MHz

• Fast Switching Times

tON 25ns

tOFF 28ns

• Rail-to-Rail Operation

• Typical Power Consumption (< 0.01μW)

• TTL/CMOS Compatible

• Chip Scale Packaging

APPLICATIONS

Battery-Powered, Handheld, and Portable Equipment

Cellular/Mobile Phones

Laptops, Notebooks, Palmtops

Communication Systems

Sample-and-Hold Circuits

Audio Signal Routing

Audio and Video Switching

Portable Test and Measurement

Medical Equipment

　　· Silicon labs 公司的I2C隔离芯片Si8600，支持2个带防死锁功能双向隔离通信通道，非常适用I2C通信隔离，简化设计;-40℃~+125℃工作温度范围，高达5kV的隔离度，支持国内CQC认证，彻底隔离高低电压，产品更可靠、用户更安全。

【Si8600】

Si860x Data Sheet

Bidirectional I2C Isolators with Unidirectional Digital Channels The Si860x series of isolators are single-package galvanic isolation solutions for I2C and SMBus serial port applications. These products are based on Silicon Labs proprietary RF isolation technology and offer shorter propagation delays, lower power consumption, smaller installed size, and more stable operation with temperature and age versus opto couplers or other digital isolators.

All devices in this family include hot-swap, bidirectional SDA and/or SCL isolation channels with open-drain, 35 mA sink capability that operate to a maximum frequency of 1.7 MHz. The 8-pin version (Si8600) supports bidirectional SDA and SCL isolation; the Si8602 supports bidirectional SDA and unidirectional SCL isolation, and the 16-pin versions(Si8605, Si8606) feature two unidirectional isolation channels to support additional system signals, such as interrupts or resets. All versions contain protection circuits to guard against data errors when an unpowered device is inserted into a powered system. Small size, low installed cost, low power consumption, and short propagation delays make the Si860x family the optimum solution for isolating I2C and SMBus serial ports.

Automotive Grade is available for certain part numbers. These products are built using automotive-specific flows at all steps in the manufacturing process to ensure the robustness and low defectivity required for automotive applications

Industrial Applications

•Isolated I2C, SMBus

• Power over Ethernet

• Motor Control Systems

• Hot-swap applications

• Intelligent Power systems Safety Regulatory Approvals

• UL 1577 recognized

• Up to 5000 VRMS for 1 minute

• CSA component notice 5A approval

• IEC 60950-1, 61010-1, 60601-1 (reinforced insulation)

• VDE certification conformity

• Si863xxT options certified to reinforced VDE 0884-10

• All other options certified to IEC 60747-5-5 and reinforced 60950-1

• CQC certification approval

• GB4943.1

Automotive Applications

• On-board chargers

• Battery management systems

• Charging stations

• Traction inverters

• Hybrid Electric Vehicles

• Battery Electric Vehicles

KEY FEATURES

• Independent, bidirectional SDA and SCL isolation channels

• Open drain outputs with 35 mA sink current

• Supports I2C clocks up to 1.7 MHz

• Unidirectional isolation channels support additional system signals (Si8605, Si8606)

• Up to 5000 VRMS isolation

• UL, CSA, VDE, CQC recognition

• 60-year life at rated working voltage

• High electromagnetic immunity

• Wide operating supply voltage

• 3.0 to 5.5 V

• Wide temperature range

• –40 to +125 °C

• Transient immunity 50 kV/µs

• AEC-Q100 qualification

• RoHS-compliant packages

• SOIC-8 narrow body

• SOIC-16 wide body

• SOIC-16 narrow body

• RoHS-compliant packages

• SOIC-16 wide body

• SOIC-16 narrow body

• SOIC-8 narrow body

• Automotive-grade OPNs available

• AIAG compliant PPAP documentation support

• IMDS and CAMDS listing support