Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

FAN4010 Fiches technique(PDF) 7 Page - Fairchild Semiconductor

No de pièce FAN4010
Description  High-Side Current Sensor
Download  9 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  FAIRCHILD [Fairchild Semiconductor]
Site Internet  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN4010 Fiches technique(HTML) 7 Page - Fairchild Semiconductor

  FAN4010 Datasheet HTML 1Page - Fairchild Semiconductor FAN4010 Datasheet HTML 2Page - Fairchild Semiconductor FAN4010 Datasheet HTML 3Page - Fairchild Semiconductor FAN4010 Datasheet HTML 4Page - Fairchild Semiconductor FAN4010 Datasheet HTML 5Page - Fairchild Semiconductor FAN4010 Datasheet HTML 6Page - Fairchild Semiconductor FAN4010 Datasheet HTML 7Page - Fairchild Semiconductor FAN4010 Datasheet HTML 8Page - Fairchild Semiconductor FAN4010 Datasheet HTML 9Page - Fairchild Semiconductor  
Zoom Inzoom in Zoom Outzoom out
 7 / 9 page
background image
© 2007 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN4010 Rev. 1.0.5
7
Application Information
Detailed Description
The FAN4010 measures the voltage drop (VSENSE)
across an external sense resistor located in the high
voltage side of the circuit. VSENSE is converted to a
linear current via an internal operational amplifier and
precision 100Ω resistor. The value of this current is
VSENSE/100Ω (internal). Output current flows from the
IOUT pin to an external resistor ROUT to generate an
output voltage proportional to the current flowing to
the load.
Use the following equations to scale a load current to
an output voltage:
VSENSE = ILoad • RSENSE
(1)
VOUT = 0.01 x VSENSE x ROUT
(2)
Figure 12. Functional Circuit
Selecting RSENSE
Selection of RSENSE is a balance between desired accu-
racy and allowable voltage loss. Although the FAN4010
is optimized for high accuracy with low VSENSE values, a
larger RSENSE value provides additional accuracy. How-
ever, larger values of RSENSE create a larger voltage
drop, reducing the effective voltage available to the load.
This can be troublesome in low-voltage applications.
Because of this, the maximum expected load current
and allowable load voltage should be well understood.
Although higher values of VSENSE can be used, RSENSE
should be chosen to satisfy the following condition:
10mV < VSENSE < 200mV
(3)
For low-cost applications where accuracy is not as
important, a portion of the printed circuit board (PCB)
trace can be used as an RSENSE resistor. Figure 13
shows an example of this configuration. The resistivity
of a 0.1 inch wide trace of two-ounce copper is about
30mΩ/ft. Unfortunately, the resistance temperature
coefficient is relatively large (approximately 0.4% / C),
so systems with a wide temperature range may need
to compensate for this effect. Additionally, self heating
due to load currents introduces a nonlinearity error.
Care must be taken not to exceed the maximum power
dissipation of the copper trace.
Figure 13. Using PCB Trace for RSENSE
Selecting ROUT
ROUT can be chosen to obtain the output voltage ran-
ge required for the particular downstream application.
For example, if the output of the FAN4010 is intended
to drive an analog-to-digital convertor (ADC), ROUT
should be chosen such that the expected full-scale
output current produces an input voltage that matches
the input range of the ADC. For instance, if expected
loading current ranges from 0 to 1A, a RSENSE resistor
of 1Ω produces an output current that ranges from 0 to
10mA. If the input voltage range of the ADC is 0 to 2V,
a ROUT value of 200Ω should be used.
The input voltage and full-scale output current (IOUT_
FS) needs to be taken into account when setting up the
output range. To ensure sufficient operating head-
room, choose:
(ROUT • IOUT_FS) such that
VIN - VSENSE - (ROUT • IOUT_FS) > 1.6V
(4)
Output current accuracy for the recommended VSENSE
levels between 10mV and 200mV are typically much
better than 1%. As a result, the absolute output volta-
ge accuracy is dependent upon the precision of the
output resistor.
Make sure the input impedance of the circuit con-
nected to VOUT is much higher than ROUT to ensure
accurate VOUT values.
Since the FAN4010 provides a trans-impedance func-
tion, it is ideal for applications involving current rather
than voltage sensing.
ROUT
3
6
1
IOUT
Load
VIN
Vsense
VOUT
100
Rsense
+
-
VIN
RLoad
R
SENSE
INPUT
LOAD
0.3in COPPER
0.3in COPPER
0.1in COPPER
ROUT
2
34
IOUT
Load
VIN
1
GND
NC
VOUT
6
5
NC


Numéro de pièce similaire - FAN4010

FabricantNo de pièceFiches techniqueDescription
logo
Fairchild Semiconductor
FAN4010 FAIRCHILD-FAN4010 Datasheet
246Kb / 10P
   High-Side Current Sensor
logo
ON Semiconductor
FAN4010 ONSEMI-FAN4010 Datasheet
192Kb / 9P
   High-Side Current Sensor
November-2017, Rev. 2
logo
Fairchild Semiconductor
FAN4010IL6X FAIRCHILD-FAN4010IL6X Datasheet
246Kb / 10P
   High-Side Current Sensor
logo
ON Semiconductor
FAN4010IL6X ONSEMI-FAN4010IL6X Datasheet
192Kb / 9P
   High-Side Current Sensor
November-2017, Rev. 2
FAN4010IL6X-F113 ONSEMI-FAN4010IL6X-F113 Datasheet
192Kb / 9P
   High-Side Current Sensor
November-2017, Rev. 2
More results

Description similaire - FAN4010

FabricantNo de pièceFiches techniqueDescription
logo
Fairchild Semiconductor
FAN4010 FAIRCHILD-FAN4010 Datasheet
246Kb / 10P
   High-Side Current Sensor
logo
ON Semiconductor
FAN4010 ONSEMI-FAN4010 Datasheet
192Kb / 9P
   High-Side Current Sensor
November-2017, Rev. 2
logo
Microchip Technology
PAC1921 MICROCHIP-PAC1921 Datasheet
1Mb / 56P
   High-Side Current/Power Sensor
01/27/15
logo
Texas Instruments
BQ500100 TI1-BQ500100 Datasheet
332Kb / 18P
[Old version datasheet]   High-Side Current Sensor for Wireless Charging
logo
Supertex, Inc
HV7800 SUTEX-HV7800 Datasheet
365Kb / 6P
   High Side Current Monitor
logo
Diodes Incorporated
ZXCT1009 DIODES-ZXCT1009_11 Datasheet
203Kb / 8P
   HIGH-SIDE CURRENT MONITOR
logo
TECH PUBLIC Electronics...
TP1001S3 TECHPUBLIC-TP1001S3 Datasheet
1Mb / 5P
   HIGH-SIDE CURRENT MONITOR
logo
Supertex, Inc
HV7801 SUTEX-HV7801 Datasheet
504Kb / 5P
   High Side Current Monitor
logo
Zetex Semiconductors
ZXCT1009 ZETEX-ZXCT1009 Datasheet
216Kb / 8P
   HIGH-SIDE CURRENT MONITOR
ZXCT1009 ZETEX-ZXCT1009_07 Datasheet
241Kb / 9P
   HIGH-SIDE CURRENT MONITOR
More results


Html Pages

1 2 3 4 5 6 7 8 9


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com