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ADUM4223BRWZ-RL

更新时间： 2024-10-28 12:20:47

品牌	Logo	应用领域
亚德诺 - ADI		驱动器
页数	文件大小	规格书
20页	422K
描述
Isolated Precision Half-Bridge Driver

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ADUM4223BRWZ-RL 数据手册

Data Sheet

ADuM3223/ADuM4223

The values shown in Table 11 summarize the peak voltage for

50 years of service life for a bipolar ac operating condition, and

the maximum CSA/VDE approved working voltages. In many

cases, the approved working voltage is higher than 50-year

service life voltage. Operation at these high working voltages

can lead to shortened insulation life in some cases.

POWER CONSUMPTION

The supply current at a given channel of the ADuM3223/

ADuM4223 isolator is a function of the supply voltage,

channel data rate, and channel output load.

For each input channel, the supply current is given by

_DDI= I_DDI(Q)

f ≤ 0.5f_r

f > 0.5f_r

The insulation lifetime of the ADuM3223/ADuM4223 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, unipo-

lar ac, or dc. Figure 24, Figure 25, and Figure 26 illustrate these

different isolation voltage waveforms.

I_DDI= I_DDI(D)× (2f – f_r) + I_DDI(Q)

For each output channel, the supply current is given by

_DDO= I_DDO(Q)

_DDO= (I_DDO(D)+ (0.5) × C_LV_DDO) × (2f – f_r) + I_DDO(Q)

f > 0.5f_r

f ≤ 0.5f_r

A bipolar ac voltage environment is the worst case for the

iCoupler products and is the 50-year operating lifetime that

Analog Devices recommends for 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. Any cross-

insulation voltage waveform that does not conform to Figure 25

or Figure 26 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 12.

where:

_DDI(D), I_DDO(D)are the input and output dynamic supply currents

per channel (mA/Mbps).

C_Lis the output load capacitance (pF).

_DDOis the output supply voltage (V).

f is the input logic signal frequency (MHz, half of the input data

rate, NRZ signaling).

f_ris the input stage refresh rate (Mbps).

_DDI(Q), I_DDO(Q)are the specified input and output quiescent supply

currents (mA).

Note that the voltage presented in Figure 25 is shown as sinu-

soidal for illustration purposes only. It is meant to represent any

voltage waveform varying between 0 V and some limiting value.

The limiting value can be positive or negative, but the voltage

cannot cross 0 V.

To calculate the total supply current, the supply currents for

each input and output channel corresponding to I_DD1, I_DDA, and

_DDBare calculated and totaled.

Figure 9 provides total input I_DD1supply current as a function

of data rate for both input channels. Figure 10 provides total I_DDA

or I_DDBsupply current as a function of data rate for both outputs

loaded with 2 nF capacitance.

RATED PEAK VOLTAGE

Figure 24. Bipolar AC Waveform

INSULATION LIFETIME

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. In addition

to the testing performed by the regulatory agencies, Analog

Devices carries out an extensive set of evaluations to determine

the lifetime of the insulation structure within the ADuM3223/

ADuM4223.

RATED PEAK VOLTAGE

Figure 25. Unipolar AC Waveform

RATED PEAK VOLTAGE

Analog Devices performs accelerated life testing using voltage

levels higher than the rated continuous working voltage. Accel-

eration factors for several operating conditions are determined.

These factors allow calculation of the time to failure at the actual

working voltage.

Figure 26. DC Waveform

Rev. 0| Page 17 of 20

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ADUM4223BRWZ-RL 替代型号

型号	品牌	替代类型	描述	数据表
ADUM4223BRWZ	ADI	完全替代	Isolated Precision Half-Bridge Driver

与ADUM4223BRWZ-RL相关器件

型号	品牌	获取价格	描述	数据表
ADUM4223CRWZ	ADI	获取价格	Isolated Precision Half-Bridge Driver
ADUM4223CRWZ-RL	ADI	获取价格	Isolated Precision Half-Bridge Driver
ADUM4223WARWZ	ADI	获取价格	5 KV rms Isolated Precision Half-Bridge Driver, 4 A Output
ADUM4223WBRWZ	ADI	获取价格	暂无描述
ADUM4223WBRWZ-RL	ADI	获取价格	暂无描述
ADUM4223WCRWZ	ADI	获取价格	暂无描述
ADUM4223WCRWZ-RL	ADI	获取价格	5 KV rms Isolated Precision Half-Bridge Driver, 4 A Output
ADUM4224	ADI	获取价格	Isolated Precision Half-Bridge Driver, 4 A Output
ADUM4224WARWZ	ADI	获取价格	5kV rms Isolated Precision Half-Bridge Driver, 4A Output for Automotive
ADUM4224WARWZ-RL	ADI	获取价格	5kV rms Isolated Precision Half-Bridge Driver, 4A Output for Automotive

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