FP133DR-LF [FEELING]
Over Current Protection IC With Shunt Regulator;型号: | FP133DR-LF |
厂家: | Feeling Technology |
描述: | Over Current Protection IC With Shunt Regulator |
文件: | 总10页 (文件大小:279K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
FP133
Over Current Protection IC With Shunt Regulator
General Description
FP133 is a main rail current detection and over current protection IC. It includes a current shunt
comparator and shutdown comparator with a precision shunt regulator like FP431.
The rail current detection gain can be adjusted with three external resistors. The regulator
output CSO pin is connected to a shutdown comparator for driving a protection circuit like a
photo-coupler to shutdown the primary side PWM IC when over current occurs.
The voltage shunt regulator has a 2.5V reference for switching power supply secondary output
voltage feedback.
FP133 can be used for OCP and output voltage feedback function with few external parts. It is
suitable for application in secondary main rail power supply of SPS or isolated fly-back DC-DC
converter.
Features
Independent Power Supply Voltage: 2.7 to 28V
Wide Operating Temperature Range: -20℃~ +105℃
Independent Shunt and Supply Voltage
Low Input Offset Voltage
Sense Gain Adjustable
Built-in 1.25V Comparator for O.C.P
Shunt Regulator Voltage: 2.5V (1.0%)
Output Sink Current Capability up 50mA
Package: SOP-8L
Typical Application Circuit
SPS
AC Adaptor
Isolated Fly-back DC-DC Converter
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.9
1/10
FP133
Function Block Diagram
VIN
VCC
REF
CA
Current Shunt Regulator
with Shutdown Comparator
Voltage Shunt
Regulator
2.5V
1.25V
GND
(AN)
CSO
FPO
VIP
Pin Descriptions
SOP-8L
Name No. I / O
Description
Top View
VIP
1
I
Positive Input of Current Shunt OPA
1
2
3
4
8
7
6
5
VIP
VIN
Output of Current Shunt OPA to Inverting
Input of Shutdown Comparator
CSO
2
O / I
VCC
CSO
REF
CA
REF
CA
3
4
5
6
7
8
I
I
2.5V Reference
Voltage Shunt Cathode Input
IC Ground
FPO
GND
GND
FPO
VCC
VIN
P
O
P
I
Shutdown Comparator Output (O.C.)
IC Power Supply
Inverting Input of Current Shunt OPA
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.9
2/10
FP133
IC Date Code Identification
SOP-8L
FP133
Halogen Free
Lot Number
Internal & ID
Per-Half Month
Year
Halogen Free: Halogen free product indicator
Lot Number: Wafer lot number’s last two digits
For Example: 132386TB 86
Internal ID: Internal Identification Code
Per-Half Month: Production period indicated in half month time unit
For Example: January → A(Front Half Month), B (Last Half Month)
February → C(Front Half Month), D(Last Half Month)
Year: Production year’s last digit
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.9
3/10
FP133
Ordering Information
Part Number
Operating Temperature Package
MOQ
100EA
2500EA
Description
Tube
FP133D-LF
FP133DR-LF
SOP-8L
SOP-8L
-20°C ~ +105°C
-20°C ~ +105°C
Tape & Reel
Absolute Maximum Ratings
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Power Supply Voltage
VCC
30
V
Current Shunt Regulator Common
Mode Inputs Voltage
Current Shunt Regulator
Differential Inputs Voltage
-0.3
30
V
V
(VIP-VIN)
-15
1.5
CSO Voltage
-0.3
VCC
25
V
mA
V
FPO Sink Current
FPO Off Voltage
30
Cathode Voltage
30
V
Cathode Continuous Current
Reference Input Current
Maximum Junction Temperature
Storage Temperature Range
-50
50
mA
mA
°C
°C
-0.05
1
TJ
+150
+150
TS
-55
Power Dissipation
Lead Temperature
570
mW
°C
TA=25°C
(soldering, 10 sec)
+260
IR Re-flow Soldering Curve
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.9
4/10
FP133
Recommended Operating Conditions
Parameter
Symbol
Conditions
Min.
2.7
Typ.
Max.
28
Unit
Supply Voltage
Operating Temperature
Vcc
V
-20
+105
°C
DC Electrical Characteristics
(VCC=5V, TA= -20°C~+105°C, VIP=12V, ROUT=125kΩ unless otherwise noted)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Current Shunt Comparator Section
Full Scale Sense Voltage
VSENSE
100
500
28
mV
V
VSENSE=VIP-VIN
Common-Mode Input Voltage
VCM
2.7
VIP=2.7V to 28V,
Common-Mode Rejection
Input Offset Voltage vs Temp
Input Offset Voltage vs VCC
CMRR
100
120
4
dB
V
SENSE=50mV
TMIN to TMAX
VOFFSET VIN=2.7V to 28V,
VOFFSET
(TA)
µV / °C
µV / V
2.5
2
10
(vcc)
VSENSE=50mV
Input Bias Current
IBIAS
VIP,VIN
µA
%
Non-linearity Error
NLE
VSENSE=10mV to 150mV
±1
±2
Total Output Error
TOE VSENSE=100mV
%
Output Impedance
Voltage Swing to VCC
Voltage Swing to VCM
Bandwidth
ROUT
VSCC
VSCM
1||5
VCC-0.8
VCM-0.5
32
GΩ||pF
V
V
BW
TS
kHz
μS
ROUT=125KΩ
Settling Time
30
5V Step, ROUT=125KΩ
Total Output-Current Noise
Shutdown Comparator Section
INOISE BW=100KHz
3
nA
Input Offset Voltage
Common-Mode Voltage (IN-)
Voltage Gain
VOFFSET
2
1.0
-
5.0
mV
V
VCM
AV
-0.3
50
VCC-1.5
200
300
1.3
V/mV
nS
Large Signal Response Time
Response Time
μS
VCSO>1.3V
FPO = 1.0V
VCSO>1.3V
FPO =10mA
VCSO<1.0V
VFPO = 28V
Output Sink Current
Saturation Voltage
ISINK
VSAT
16
mA
V
V
1
1
I
Output Leakage Current
0.1
μA
1.238
1.225
1.25
1.25
2
1.263
1.275
15
V
V
TA=25℃
Reference Voltage (2%)
Line Regulation
VREF
TA=-25℃~105℃
3V≦VCC ≦28V
mV
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.9
5/10
FP133
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Voltage Shunt Regulator Section
Reference Voltage
VREF VKA=VREF, IKA=10mA
VREF VKA=VREF, IKA=10mA
IKA=10mA, VKA =10V~ VREF
2.475
2.5
2.525
30
V
V Reference vs. Temperature
mV
-1.4
-1.0
0.5
-2.0
ΔVREF
/
Line Regulation
mV / V
IKA=10mA, VKA=10V~
28V
-2.0
4
ΔVKA
Reference Current
IREF
R1=10KΩ, R2=∞, IKA=10mA
μA
μA
R1=10KΩ, R2=∞, IKA=10mA,
TA=Full rang
I Reference vs. Temperature
0.4
0.1
1.2
0.5
∆IREF
Minimum Cathode Current for
Regulation
IKA (MIN) VKA=VREF
KA=VREF,
mA
V
Dynamic Impedance
|ZKA
|
0.2
0.8
0.5
ΔIKA=0.1mA~15mA
Frequency < 1KHz
Ω
Total Device Section
Output Off IC Current
ICC
VCC=28V
mA
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.9
6/10
FP133
Function Description
Current Shunt Regulator
The figure below shows the FP133 current shunt block, load current (IS) flowing from power
-
supply and a dropout voltage (VIN+-VIN ) at the sense resistor (RS).
Assume internal NPN transistor collector current is same as emitter current (IO) and VIP is very
close to VIN, the FP133 transfer function is:
----- (1)
VIN VIN
IO
RG1
-
In this figure, the (VIN+-VIN ), is equal to IS x RS and the current shunt output voltage (CSO) is
equal to IO x RL. The final transfer function for rail current measurement in this application is:
VCSO GIS RS ----- (2)
G RL RG1
----- (3)
In FP133 internal circuits, the CSO output is connected to the shutdown comparator inverting
input. When the voltage of CSO is higher than the internal reference voltage (1.25V), the FPO pin is
switching from high to low state. This signal can be used for OCP protection control.
VIN
+
VIN-
IS
RS
LOAD
RG2
RG1
To Fault Protection
Circuits
VIP
VIN
FPO
1.25V
VCC
GND
CSO
RL
IO
Note:
1. The minimum operating voltages of VCC, VIP and VIN are 2.7V. If these supply voltages are
lower than 2.7V, the transfer function at current shunt output (CSO) is no correct.
2. Do not force a VIN voltage that is 15V higher than VIP. This condition would generate a leakage
current and an incorrect voltage at FP133 output.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.9
7/10
FP133
Voltage Shunt Regulator
The figure below shows the FP133 voltage shunt regulator. It includes an internal 2.5V voltage
reference connecting to the comparator inverting input. The comparator’s high cathode current sink
ability is designed for photo-coupler driving.
The VOUT equation is:
R1
R2
VOUT 1
2.5V ---- (4)
VOUT
R1
R2
R3
REF
IF
CA
2.5V
Reference
GND
Note
1. Connect a compensation network between CA and REF pins to reduce high output voltage
ringing during light loading or transient.
2. R3 is selectable for dynamic loading feedback.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.9
8/10
FP133
VOUT
RS
Is
R1
R2
LOAD
1
2
RG1
RG2
FP384x
R3
IF
VIN
VIP
VCC
GND
FPO
VAUX
FP133
REF
CSO
CA
Io
RL
Adaptor secondary Voltage Feedback / Over Loading Protection circuit
The above circuit is a simple application for AC / DC adaptor over loading protection (OCP)
function with output voltage feedback.
For example, when load current (IS) increases, the FP133 CSO voltage would increase according
to equation (2). Once the internal shutdown comparator’s inverting input, which is connected to CSO
pin, is higher than 1.25V reference, a sink current (IOUT) will flow through the photo-coupler. The
FP384x PWM IC will change the NMOS drive terminal to a minimum duty cycle current limitation for
secondary side over current protection. The primary side auxiliary voltage can no longer maintain the
FP384x power supply. The FP384x will be shutdown until AC line start-up voltage restart the PWM IC.
The FP133 voltage shunt regulator responses the output voltage change with R1 and R2. The
feedback current will flow from photo-coupler to FP133 CA pin (pin4) and generates the feedback
voltage signal to PWM IC FP384x.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.9
9/10
FP133
Package Outline
SOP-8L
UNIT: mm
Symbols
Min. (mm)
1.346
0.101
1.092
4.800
3.810
5.791
0.406
0°
Max. (mm)
1.752
0.254
1.498
4.978
3.987
6.197
1.270
8°
A
A1
A2
D
E
H
L
θ°
Note:
1. Package dimensions are in compliance with JEDEC Outline: MS-012 AA.
2. Dimension “D” does not include molding flash, protrusions or gate burrs.
3. Dimension “E” does not include inter-lead flash, or protrusions.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.9
10/10
相关型号:
FP140.6
CAPACITOR, ALUMINUM ELECTROLYTIC, NON SOLID, POLARIZED, 350V, 150uF, CHASSIS MOUNT, RADIAL LEADED
CDE
FP14020F
RESISTOR, METAL OXIDE FILM, 1 W, 1 %, 150 ppm, 402 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
FP14021F
RESISTOR, METAL OXIDE FILM, 1 W, 1 %, 150 ppm, 4020 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
FP14022F
RESISTOR, METAL OXIDE FILM, 1 W, 1 %, 150 ppm, 40200 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
FP14023F
RESISTOR, METAL OXIDE FILM, 1 W, 1 %, 150 ppm, 402000 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
FP1402KF
RESISTOR, METAL OXIDE FILM, 1 W, 1 %, 150 ppm, 402000 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
FP1402RF
RESISTOR, METAL OXIDE FILM, 1 W, 1 %, 150 ppm, 402 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
FP140K2F
RESISTOR, METAL OXIDE FILM, 1 W, 1 %, 150 ppm, 40200 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
FP140R2F
RESISTOR, METAL OXIDE FILM, 1 W, 1 %, 150 ppm, 40.2 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
FP141K2F
RESISTOR, METAL OXIDE FILM, 1 W, 1 %, 150 ppm, 41200 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
FP1422KF
RESISTOR, METAL OXIDE FILM, 1 W, 1 %, 150 ppm, 422000 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
©2020 ICPDF网 联系我们和版权申明