Silabs Si86xx六路超低功耗数字隔离解决方案

发布时间：2011-8-4 12:06 发布者：Liming

Silabs公司的Si86xx系列是六路超低功耗数字隔离器,工作速率从DC到150Mbps,高达5000V VRMS绝缘,工作电压2.5V-5.5V,通过的安全认证如 UL 1577 ,IEC 60950-1, 61010-1, 60601-1等,应用在工业自动化系统,医疗设备,混合动力汽车(HEV),绝缘开关电源,绝缘的ADC和DAC,马达控制,电源逆变器和通信系统.本文介绍了Si86xx主要特性,通路框图,以及Si86XXISO 评估板电路图和材料清单.

LOW POWER SIX-CHANNEL DIGITAL ISOLATOR

Silicon Lab’s family of ultra-low-power digital isolators are CMOS devices offering substantial data rate, propagation delay, power, size, reliability, and external BOM advantages over legacy isolation technologies. The operating parameters of these products remain stable across wide temperature ranges and throughout device service life for ease of design and highly uniform performance. All device versions have Schmitt trigger inputs for high noise immunity and only require VDD bypass capacitors.

Data rates up to 150 Mbps are supported, and all devices achieve propagation delays of less than 10 ns. Ordering options include a choice of isolation ratings (3.75 and 5 kV) and a selectable fail-safe operating mode to control the default output state during power loss. All products >1 kVRMS are safety certified by UL, CSA, and VDE, and products in wide-body packages support reinforced insulation withstanding up to 5 kVRMS

Si86xx主要特性:
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High-speed operation

DC to 150 Mbps
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No start-up initialization required
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Wide Operating Supply Voltage
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2.5–5.5 V
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Up to 5000 VRMS isolation
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60-year life at rated working voltage
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High electromagnetic immunity
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Ultra low power (typical)

5 V Operation
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1.6 mA per channel at 1 Mbps

5.5 mA per channel at 100 Mbps

2.5 V Operation

1.5 mA per channel at 1 Mbps
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3.5 mA per channel at 100 Mbps
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Schmitt trigger inputs
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Selectable fail-safe mode
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Default high or low output (ordering option)
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Precise timing (typical)

10 ns propagation delay

1.5 ns pulse width distortion
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0.5 ns channel-channel skew
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2 ns propagation delay skew
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5 ns minimum pulse width
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Transient Immunity 50 kV/μs
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AEC-Q100 qualification
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Wide temperature range
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–40 to 125 °C
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RoHS-compliant packages
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SOIC-16 wide body

SOIC-16 narrow body

Si86xx应用:

Industrial automation systems

Medical electronics
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Hybrid electric vehicles
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Isolated switch mode supplies
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Isolated ADC, DAC
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Motor control
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Power inverters

Communication systems

通过的安全认证:

Safety Regulatory Approvals

UL 1577 recognized

Up to 5000 VRMS for 1 minute
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CSA component notice 5A approval

IEC 60950-1, 61010-1, 60601-1 (reinforced insulation)

VDE certification conformity

IEC 60747-5-2(VDE0884 Part 2)

EN60950-1(reinforced insulation)

图1.Si86xx简化通路框图

Si86XXISO 评估板

The Si86xxISO evaluation board allows designers to evaluate Silicon Lab’s family of CMOS ultra-low-power isolators. These isolators are CMOS devices employing RF coupler technology to transmit digital information across an isolation barrier. Very high speed operation at low power levels is achieved. These products are based on Silicon Laboratories’ proprietary RF isolation technology and offer shorter propagation delays, lower power consumption, improved noise immunity, smaller installed size, and more stable operation with temperature and age versus opto couplers. The Si861x/2x/3x/4x/5x/6x include up to six unidirectional isolated channels, permitting data transmission up to 150 Mbps. The Si860x isolator series consists of single-package galvanic isolation solutions for I2C, SMBus, and PMBus serial port applications.

The Si86xxISO Evaluation Kit contains the following items:

Si86xxISO based evaluation board (Si86xxISO-EVB)

Si8600, Si8605, Si8621, Si8655, and Si8663 CMOS digital isolators installed on the evaluation board