參數(shù)資料
型號(hào)： DRV401AIRGWRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQCC20
封裝： 5 X 5 MM, GREEN, PLASTIC, QFN-20
文件頁(yè)數(shù)： 4/36頁(yè)
文件大?。?/td> 963K
代理商： DRV401AIRGWRG4
DRV401
SBVS070B JUNE 2006 REVISED MAY 2009
www.ti.com
12
APPLICATIONS INFORMATION
FUNCTIONAL PRINCIPLE OF CLOSED-LOOP
CURRENT SENSORS WITH MAGNETIC
PROBE USING THE DRV401
Closed-loop current sensors measure current over wide
frequency ranges, including dc. These types of devices
offer a contact-free method as well as excellent galvanic
isolation performance combined with high resolution,
accuracy, and reliability.
At dc and in low-frequency ranges, the magnetic field
induced from the current in the primary winding is
compensated
by
a
current
flowing
through
a
compensation winding. A magnetic field probe, located in
the magnetic core loop, detects the magnetic flux. This
probe delivers the signal to the amplifier that drives the
current through the compensation coil, bringing the
magnetic flux back to zero. This compensation current is
proportional to the primary current, relative to the winding
ratio.
In higher frequency ranges, the compensation winding
acts as the secondary winding in the current transformer,
while the H-bridge compensation driver is rolled off and
provides low output impedance.
A difference amplifier senses the voltage across a small
shunt resistor that is connected to the compensation loop.
This difference amplifier generates the output voltage that
is referenced to REFIN and is proportional to the primary
current. Figure 1 shows the DRV401 used as a
compensation current sensor.
Integrator
Filter
Probe
Interface
HBridge
Driver
V
OUT
REF
IN
I
COMP2
R
S
I
COMP1
Compensation
Diff
Amp
Timing, Error Detection,
and Power Control
Degauss
V
REF
V
REF
GND
+5V
IS1
IS2
DRV401
I
P
Compensation Winding
Magnetic Core
Primary Winding
Field Probe
Figure 1. Principle of Compensation Current Sensor with the DRV401
相關(guān)PDF資料
PDF描述
DS-11802D4-124 DIGITAL TO SYNCHRO OR RESOLVER, CDIP28
DS1667S-10 SPECIALTY ANALOG CIRCUIT, PDSO20
DS1832N 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8
DS2720CU/T&R 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
DS36F95J EIA-485/EIA-422A Differential Bus Transceiver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DRV401AIRGWT 功能描述:功率驅(qū)動(dòng)器IC Sensor Sig Conditioning RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
DRV401AIRGWTG4 功能描述:功率驅(qū)動(dòng)器IC Sensor Signal Conditioning RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
DRV401AMDWPREP 功能描述:功率驅(qū)動(dòng)器IC Enh Prod Sensor Sig Conditioning RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
DRV401-EP 制造商:TI 制造商全稱:Texas Instruments 功能描述:SENSOR SIGNAL CONDITIONING IC FOR CLOSED-LOOP MAGNETIC CURRENT SENSOR
DRV401-EP_09 制造商:TI 制造商全稱:Texas Instruments 功能描述:SENSOR SIGNAL CONDITIONING IC FOR SENSOR SIGNAL CONDITIONING IC FOR
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*