Datasheet > ADUM5402ARWZ1

ADUM5402ARWZ1

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
24页	591K
描述
Quad-Channel Isolators with Integrated DC-to-DC Converter

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ADUM5402ARWZ1 数据手册

ADuM5401/ADuM5402/ADuM5403/ADuM5404

for several operating conditions are determined, allowing calcu-

lation of the time to failure at the working voltage of interest. The

values shown in Table 9 summarize the peak voltages for 50 years

of service life in several operating conditions. In many cases, the

working voltage approved by agency testing is higher than the

50-year service life voltage. Operation at working voltages higher

than the service life voltage listed leads to premature insulation

failure.

POWER CONSIDERATIONS

The ADuM5401/ADuM5402/ADuM5403/ADuM5404 power

input, the data input channels on the primary side, and the data

input channels on the secondary side are all protected from

premature operation by UVLO circuitry. Below the minimum

operating voltage, the power converter holds its oscillator inactive,

and all input channel drivers and refresh circuits are idle. Outputs

are held in a low state. This is to prevent transmission of

The insulation lifetime of the ADuM5401/ADuM5402/

undefined states during power-up and power-down operations.

ADuM5403/ ADuM5404 depends on the voltage waveform type

imposed across the isolation barrier. The iCoupler insulation

structure degrades at different rates, depending on whether the

waveform is bipolar ac, unipolar ac, or dc. Figure 28, Figure 29,

and Figure 30 illustrate these different isolation voltage waveforms.

During application of power to V_DD1, the primary side circuitry

is held idle until the UVLO preset voltage is reached. At that time,

the data channels are initialized to their default low output state

until they receive data pulses from the secondary side.

The primary side input channels sample the input and send a pulse

to the inactive secondary output. The secondary side converter

begins to accept power from the primary, and the V_ISOvoltage

starts to rise. When the secondary side UVLO is reached, the

secondary side outputs are initialized to their default low state

until data, either a transition or a dc refresh pulse, is received

from the corresponding primary side input. It can take up to

1 μs after the secondary side is initialized for the state of the

output to correlate with the primary side input.

Bipolar ac voltage is the most stringent environment. A 50-year

operating lifetime under the bipolar ac condition determines

the Analog Devices recommended maximum working voltage.

In the case of unipolar ac or dc voltage, the stress on the insulation

is significantly lower. This allows operation at higher working

voltages while still achieving a 50-year service life. The working

voltages listed in Table 9 can be applied while maintaining the

50-year minimum lifetime, provided the voltage conforms to either

the unipolar ac or dc voltage cases. Any cross-insulation voltage

waveform that does not conform to Figure 29 or Figure 30

should be treated as a bipolar ac waveform, and its peak voltage

should be limited to the 50-year lifetime voltage value listed in

Table 9.

Secondary side inputs sample their state and transmit it to the

primary side. Outputs are valid one propagation delay after the

secondary side becomes active.

Because the rate of charge of the secondary side is dependent

on loading conditions, input voltage, and output voltage level

selected, care should be taken in the design to allow the converter

to stabilize before valid data is required.

RATED PEAK VOLTAGE

When power is removed from V_DD1, the primary side converter

and coupler shut down when the UVLO level is reached. The

secondary side stops receiving power and starts to discharge.

The outputs on the secondary side hold the last state that they

received from the primary until either the UVLO level is reached

and the outputs are placed in their default low state, or the outputs

detect a lack of activity from the inputs and the outputs are set

to their default value before the secondary power reaches UVLO.

Figure 28. Bipolar AC Waveform

RATED PEAK VOLTAGE

Figure 29. DC Waveform

INSULATION LIFETIME

RATED PEAK VOLTAGE

All insulation structures eventually break down when subjected

to voltage stress over a sufficiently long period. The rate of insu-

lation degradation is dependent on the characteristics of the voltage

waveform applied across the insulation. Analog Devices conducts

an extensive set of evaluations to determine the lifetime of the

insulation structure within the ADuM5401/ADuM5402/

ADuM5403/ADuM5404.

NOTES:

1. THE VOLTAGE IS SHOWN AS SINUSOIDAL FOR ILLUSTRATION

PURPOSES ONLY. IT IS MEANT TO REPRESENT ANY VOLTAGE

WAVEFORM VARYING BETWEEN 0 AND SOME LIMITING VALUE.

THE LIMITING VALUE CAN BE POSITIVE OR NEGATIVE, BUT THE

VOLTAGE CANNOT CROSS 0V.

Figure 30. Unipolar AC Waveform

Accelerated life testing is performed using voltage levels higher

than the rated continuous working voltage. Acceleration factors

Rev. 0 | Page 20 of 24

1...17 18 192021 22 23 24

中文翻译

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与ADUM5402ARWZ1相关器件

型号	品牌	描述	获取价格	数据表
ADUM5402ARWZ2	ADI	Quad-Channel Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5402ARWZ-RL	ADI	Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5402CRWZ	ADI	Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5402CRWZ1	ADI	Quad-Channel Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5402CRWZ2	ADI	Quad-Channel Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5402CRWZRL	ADI	SPECIALTY ANALOG CIRCUIT, PDSO16, ROHS COMPLIANT, MS-013AA, SOIC-16	获取价格
ADUM5402CRWZ-RL	ADI	Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5402W	ADI	Quad-Channel Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5402WCRWZ	ADI	Quad-Channel Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5402WCRWZ-1	ADI	Quad-Channel Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5402WCRWZRL	ADI	SPECIALTY ANALOG CIRCUIT, PDSO16, ROHS COMPLIANT, MS-013AA, SOIC-16	获取价格
ADUM5402WCRWZ-RL	ADI	暂无描述	获取价格
ADUM5403	ADI	Quad-Channel Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5403ARWZ	ADI	Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5403ARWZ1	ADI	Quad-Channel Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5403ARWZ2	ADI	Quad-Channel Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5403ARWZRL	ADI	SPECIALTY ANALOG CIRCUIT, PDSO16, ROHS COMPLIANT, MS-013AA, SOIC-16	获取价格
ADUM5403ARWZ-RL	ADI	Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter (1/3 channel directional	获取价格
ADUM5403CRWZ	ADI	Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter	获取价格
ADUM5403CRWZ1	ADI	Quad-Channel Isolators with Integrated DC-to-DC Converter	获取价格

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