Datasheet > ADUM1234BRWZ-RL1

ADUM1234BRWZ-RL1

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
亚德诺 - ADI		驱动器
页数	文件大小	规格书
12页	278K
描述
Isolated, Precision Half-Bridge Driver, 0.1 A Output

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ADUM1234BRWZ-RL1 数据手册

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ADuM1234

APPLICATION NOTES

300

250

200

150

100

COMMON-MODE TRANSIENT IMMUNITY

In general, common-mode transients consist of linear and

sinusoidal components. The linear component of a common-

mode transient is given by

BEST-CASE PROCESS VARIATION

V_{CM, linear}= (ΔV/Δt)t

where ΔV/Δt is the slope of the transient shown in Figure 11

and Figure 12.

The transient of the linear component is given by

dV_CM/dt = ΔV/Δt

Figure 8 characterizes the ability of the ADuM1234 to operate

correctly in the presence of linear transients. The data is based

on design simulation and is the maximum linear transient

magnitude that the ADuM1234 can tolerate without an

operational error. This data shows a higher level of robustness

than what is listed in Table 5 because the transient immunity

values obtained in Table 5 use measured data and apply

allowances for measurement error and margin.

400

WORST-CASE PROCESS VARIATION

750 1000 1250 1500 1750

FREQUENCY (MHz)

250

500

2000

Figure 9. Transient Immunity (Sinusoidal Transients),

27°C Ambient Temperature

250

200

150

100

BEST-CASE PROCESS VARIATION

350

BEST-CASE PROCESS VARIATION

300

250

200

150

WORST-CASE PROCESS VARIATION

500 750 1000 1250 1500

FREQUENCY (MHz)

WORST-CASE PROCESS VARIATION

100

250

1750

2000

Figure 10. Transient Immunity (Sinusoidal Transients),

100°C Ambient Temperature

–40

–20

100

15V

DD1

GND

TEMPERATURE (°C)

Figure 8. Transient Immunity (Linear Transients) vs. Temperature

15V

AND V

DDB

DDA

GND AND GND

The sinusoidal component (at a given frequency) is given by

15V

ΔV

Δt

AND V

DDB

DDA

ΔV

Δt

_{CM, sinusoidal}= V₀sin(2πft)

GND AND GND

15V

DD1

where:

GND

V₀is the magnitude of the sinusoidal.

f is the frequency of the sinusoidal.

Figure 11. Common-Mode Transient Immunity Waveforms, Input to Output

15V

DDA DDB

The transient magnitude of the sinusoidal component is given by

GND /GND

dV_CM/dt = 2πf V₀

15V

DDB DDA

GND /GND

15V

Figure 9 and Figure 17 characterize the ability of the

ADuM1234 to operate correctly in the presence of sinusoidal

transients. The data is based on design simulation and is the

maximum sinusoidal transient magnitude (2πf V₇) that the

ADuM1234 can tolerate without an operational error. Values

for immunity against sinusoidal transients are not included in

Table 5 because measurements to obtain such values have not

been possible.

ΔV

Δt

DDA DDB

ΔV

Δt

GND /GND

15V

DDB DDA

GND /GND

Figure 12. Common-Mode Transient Immunity Waveforms,

Between Outputs

Rev. 0 | Page 8 of 12

1...5 6 789 10 11 12

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