Datasheet > ADuM4473CRIZ-RL

ADuM4473CRIZ-RL

更新时间： 2024-01-11 11:39:04

品牌	Logo	应用领域
亚德诺 - ADI		稳压器开关
页数	文件大小	规格书
36页	750K
描述
Isolated Switching Regulator with Quad-Channel Isolators

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技术参数
数据手册

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ADuM4473CRIZ-RL 技术参数

Source Url Status Check Date：	2013-05-01 14:56:51.07	是否无铅：	含铅
是否Rohs认证：	符合	生命周期：	Active
包装说明：	SOP, SOP20,.4	针数：	20
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.74
其他特性：	ALSO WORKS WITH 5 V INPUT;VOUT=(3.3-24 VOLT)	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	3.6 V
最小输入电压：	3 V	标称输入电压：	3.3 V
JESD-30 代码：	R-PDSO-G20	JESD-609代码：	e3
长度：	15.3 mm	湿度敏感等级：	3
功能数量：	1	端子数量：	20
最高工作温度：	105 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装等效代码：	SOP20,.4	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	260
电源：	5 V	认证状态：	Not Qualified
座面最大高度：	2.64 mm	子类别：	Other Analog ICs
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
最大切换频率：	515 kHz	技术：	DMOS
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	30
宽度：	7.5 mm

ADuM4473CRIZ-RL 数据手册

Data Sheet

ADuM4470/ADuM4471/ADuM4472/ADuM4473/ADuM4474

The preceding magnetic flux density values correspond to specific

current magnitudes at given distances from the ADuM447x

transformers. Figure 54 expresses these allowable current magnitudes

as a function of frequency for selected distances. As shown in

Figure 54, the ADuM447x are extremely immune and can be

affected only by extremely large currents operated at a high fre-

quency that is very close to the component. For the 1 MHz

example, a 0.5 kA current needs to be placed 5 mm away

from the ADuM447x to affect component operation.

Dynamic I/O current is consumed only when operating a channel

at speeds higher than the refresh rate of f_r. The dynamic current of

each channel is determined by its data rate. Figure 24 and Figure 28

show the current for a channel in the forward direction, meaning

that the input is on the V_DDAand V_DD2side of the part. Figure 25

and Figure 29 show the current for a channel in the reverse

direction, meaning that the input is on the V_ISOside of the part.

Figure 24, Figure 25, Figure 28, or Figure 29 assume a typical

15 pF output load.

The following relationship allows the total I_DD1current to be

DISTANCE = 1m

I_DD1= (I_ISO× V_ISO)/(E × V_DD1) + Σ I_CHn; n = 1 to 4

(5)

100

where:

_DD1is the total supply input current.

_ISOis the current drawn by the secondary side external load.

DISTANCE = 100mm

E is the power supply efficiency at the given output load from

Figure 17 or Figure 23 at the V_ISO, V_DDA, and V_DD2condition of

interest.

DISTANCE = 5mm

_CHnis the current drawn by a single channel determined from

0.1

Figure 24, Figure 25, Figure 28, or Figure 29, depending on

channel direction.

0.01

The maximum external load can be calculated by subtracting

the dynamic output load from the maximum allowable load.

10k

100k

10M

100M

MAGNETIC FIELD FREQUENCY (Hz)

Figure 54. Maximum Allowable Current for Various Current-to-ADuM447x

Spacings

_{ISO (LOAD)}= I_{ISO (MAX)}− Σ I_{ISO (D)n}; n = 1 to 4

where:

_{ISO (LOAD)}is the current available to supply an external secondary

side load.

_{ISO (MAX)}is the maximum external secondary side load current

available at V_ISO

_{ISO (D)n}is the dynamic load current drawn from V_ISOby an

(6)

In combinations of strong magnetic field and high frequency,

any loops formed by PCB traces can induce error voltages that

are sufficiently large to trigger the thresholds of succeeding cir-

cuitry. Take care in the layout of such traces to avoid this

possibility.

POWER CONSUMPTION

output or input channel, as shown for a single supply in Figure 26

or Figure 27 or for a double supply in Figure 30 or Figure 31.

The V_DDApower supply input provides power to the iCoupler data

channels, as well as to the power converter. For this reason, the

quiescent currents drawn by the data converter and the primary

and secondary I/O channels cannot be determined separately. All

of these quiescent power demands have been combined into the

The preceding analysis assumes a 15 pF capacitive load on each

data output. If the capacitive load is larger than 15 pF, the additional

current must be included in the analysis of I_DD1and I_{ISO (LOAD)}

I_{DDA (Q)}current, as shown in Figure 55. The total I_DDsupply current

is equal to the sum of the quiescent operating current; the dynamic

current, I_{DDA (D)}, demanded by the I/O channels; and any

external I_ISOload.

FEEDBACK

DDA (Q)

DDA (D)

CONVERTER

PRIMARY

CONVERTER

SECONDARY

ISO

ISO (D)

DDP (D)

PRIMARY

DATA I/O

4-CHANNEL

SECONDARY

DATA I/O

4-CHANNEL

Figure 55. Power Consumption Within the ADuM447x

Rev. 0 | Page 31 of 36

1...28 29 303132 33 34...36

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与ADuM4473CRIZ-RL相关器件

型号	品牌	描述	获取价格	数据表
ADuM4474	ADI	Isolated Switching Regulator with Quad-Channel Isolators	获取价格
ADuM4474ARIZ	ADI	Isolated Switching Regulator with Quad-Channel Isolators	获取价格
ADuM4474ARIZ-RL	ADI	Isolated Switching Regulator with Quad-Channel Isolators	获取价格
ADuM4474CRIZ	ADI	Isolated Switching Regulator with Quad-Channel Isolators	获取价格
ADuM4474CRIZ-RL	ADI	Isolated Switching Regulator with Quad-Channel Isolators	获取价格
ADUM447X	ADI	Digital Isolator Product Selection and Resource Guide	获取价格

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