NCS1002DR2G [ONSEMI]

Constant Voltage / Constant Current SecondarySide Controller; 恒压/恒流SecondarySide控制器
NCS1002DR2G
型号: NCS1002DR2G
厂家: ONSEMI    ONSEMI
描述:

Constant Voltage / Constant Current SecondarySide Controller
恒压/恒流SecondarySide控制器

电源电路 参考电压源 开关 光电二极管 控制器 PC
文件: 总9页 (文件大小:205K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
NCS1002  
Constant Voltage / Constant  
Current Secondary­Side  
Controller  
Description  
http://onsemi.com  
MARKING  
The NCS1002 is a highly integrated solution for Switching Mode  
Power Supply (SMPS) applications requiring a dual control loop to  
perform Constant Voltage (CV) and Constant Current (CC) regulation.  
The NCS1002 integrates a 2.5 V voltage reference and two precision  
op amps. The voltage reference, along with Op Amp 1, is the core of  
the voltage control-loop. Op Amp 2 is an independent, uncommitted  
amplifier specifically designed for the current control. Key external  
components needed to complete the two control loops are: (a) A  
resistor divider that senses the output of the power supply (battery  
charger) and fixes the voltage regulation set point at the specified  
value. (b) A sense resistor that feeds the current sensing circuit with a  
voltage proportional to the DC output current. This resistor determines  
the current regulation set point and must be adequately rated in terms  
of power dissipation. The NCS1002 comes in a small 8pin SOIC  
package and is ideal for space-shrunk applications such as battery  
chargers.  
DIAGRAMS  
8
SOIC8  
D SUFFIX  
CASE 751  
1002  
8
ALYWG  
G
1
1
A
L
Y
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
= PbFree Package  
W
G
(Note: Microdot may be in either location)  
PIN CONNECTIONS  
Features  
V
1
2
3
4
8
7
6
5
Out 1  
Low Input Offset Voltage: 0.5 mV, Typ  
Input Common-Mode Range includes Ground  
CC  
Out 2  
In 2−  
In 2+  
In 1−  
Low Quiescent Current: 300 mA per Op Amp at V = 5 V  
CC  
In 1+  
Large Output Voltage Swing  
Wide Power Supply Range: 3 V to 32 V  
High ESD Protection: 2 kV  
GND  
(Top View)  
These are PbFree Devices  
Typical Applications  
Battery Chargers  
Switch Mode Power Supplies  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 8 of this data sheet.  
© Semiconductor Components Industries, LLC, 2009  
1
Publication Order Number:  
July, 2009 Rev. 1  
NCS1002/D  
NCS1002  
MAXIMUM RATINGS  
Parameter  
Symbol  
Rating  
36  
Unit  
V
Supply Voltage (V to GND)  
V
CC  
CC  
Differential Input Voltage  
Input Voltage  
V
36  
V
id  
V
0.3 to +36  
2000  
V
i
ESD Protection Voltage at Pin  
Maximum Junction Temperature  
Human Body Model  
V
ESD  
V
T
150  
°C  
°C  
°C  
°C  
J
Specification Temperature Range (T  
to T  
)
T
A
40 to +105  
55 to +125  
55 to +150  
min  
max  
Operating FreeAir Temperature Range  
T
oper  
Storage Temperature Range  
T
stg  
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the  
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect  
device reliability.  
THERMAL CHARACTERISTICS  
Parameter  
Symbol  
Rating  
Unit  
Thermal Resistance  
JunctiontoAmbient  
R
175  
°C/W  
q
JA  
http://onsemi.com  
2
NCS1002  
ELECTRICAL CHARACTERISTICS  
Symbol  
Characteristics  
Conditions  
Min  
Typ  
Max  
Unit  
I
Total Supply Current, excluding current in the Voltage Reference V = 5 V, no  
0.3  
0.4  
mA  
CC  
CC  
load; 40 v T v +105°C  
A
I
Total Supply Current, excluding Current in the Voltage Reference V = 30 V, no  
0.75  
mA  
CC  
CC  
load; 40 v T v +105°C  
A
OP AMP 1 (OP AMP WITH NONINVERTING INPUT CONNECTED TO THE INTERNAL V  
)
ref  
(V = 5 V, T = 25°C unless otherwise noted)  
CC  
A
V
IO  
Input Offset Voltage  
T = 25°C  
2.0  
3.0  
mV  
mV  
A
40 v T v +105°C  
A
DV  
Input Offset Voltage Drift (40 v T v +105°C)  
7.0  
20  
mV/°C  
nA  
IO  
A
l
IB  
Input Bias Current (Inverting Input Only) T = 25°C  
A
AVD  
Large Signal Voltage Gain (V = 15 V, R = 2 kW,  
ICM  
100  
V/mV  
CC  
L
V
= 0 V)  
PSRR  
Power Supply Rejection (V = 5.0 V to 30 V, V  
= 2 V)  
80  
20  
100  
40  
dB  
CC  
OUT  
I
Output Source Current (V = 15 V, V = 2.0 V,  
OUT  
mA  
SOURCE  
CC  
V
id  
= 1 V)  
I
Short Circuit to GND (V = 15 V)  
40  
10  
60  
mA  
mA  
O
CC  
I
Output Current Sink (V = 1 V)  
V
CC  
= +15 V, V = 0.2 V  
OUT  
1
SINK  
id  
(Note 1)  
V
= +15 V, V  
= 2 V  
OUT  
10  
26  
26  
27  
27  
20  
27  
mA  
V
CC  
V
OH  
Output Voltage Swing, High (V = 30 V)  
R = 2 kW, T = 25°C  
CC  
L
A
40 v T v +105°C  
A
R = 10 kW, T = 25°C  
28  
L
A
40 v T v +105°C  
A
V
OL  
Output Voltage Swing, Low  
5.0  
50  
50  
mV  
R = 10 kW, T = 25°C  
L
A
40 v T v +105°C  
A
SR  
Slew Rate (AV = +1, V = 0.5 V to 2 V, V = 15 V,  
0.2  
0.5  
0.4  
0.9  
V/ms  
MHz  
%
i
CC  
R = 2 kW, C = 100 pF)  
L
L
GBP  
THD  
Gain Bandwidth Product (V = 30 V, AV = +1, (Note 1)  
CC  
R = 2 kW, C = 100 pF, f = 100 kHz, V = 10 mV )  
L
L
IN  
PP  
Total Harmonic Distortion (f = 1 kHz, AV = 10,  
R = 2 kW, V = 30 V, V = 2 V  
0.08  
)
PP  
L
CC  
OUT  
OP AMP 2 (INDEPENDENT OP AMP) (V = 5.0 V, T = 25°C unless otherwise noted)  
CC  
A
V
IO  
Input Offset Voltage  
T = 25°C  
0.5  
2.0  
3.0  
mV  
A
40 v T v +105°C  
A
DV  
Input Offset Voltage Drift (40 v T v +105°C)  
7.0  
2.0  
mV/°C  
IO  
A
I
IO  
Input Offset Current  
T = 25°C  
A
75  
nA  
40 v T v +105°C  
150  
150  
200  
A
I
Input Bias Current  
T = 25°C  
A
20  
nA  
V/mV  
dB  
B
40 v T v +105°C  
A
AVD  
Large Signal Voltage Gain (V = 15 V,  
T = 25°C  
50  
25  
65  
100  
100  
CC  
A
R = 2 kW, V  
= 1.4 V to 11.4 V)  
L
OUT  
40 v T v +105°C  
A
PSRR  
Power Supply Rejection (V = 5 V to 30 V)  
CC  
1. Guaranteed by design and/or characterization.  
http://onsemi.com  
3
 
NCS1002  
ELECTRICAL CHARACTERISTICS (continued)  
Symbol  
Characteristics  
Conditions  
Min  
Typ  
Max  
Unit  
OP AMP 2 (INDEPENDENT OP AMP) (continued) (V = 5.0 V, T = 25°C unless otherwise noted)  
CC  
A
V
ICM  
Input Common Mode Voltage Range (Note 2)  
CC  
T = 25°C  
A
0
V
CC  
1.5  
V
(V = +30 V)  
40 v T v +105°C  
0
V
CC  
2.0  
A
CMRR  
Common Mode Rejection Ratio (Note 4)  
0 to V 1.7 V,  
70  
60  
20  
85  
dB  
CC  
T = 25°C  
A
0 to V 2.2 V  
CC  
40 v T v +105°C  
A
I
Output Current Source (V = 15 V, V  
= 2 V, V = +1 V)  
40  
40  
10  
20  
27  
mA  
mA  
mA  
mA  
V
SOURCE  
CC  
OUT  
ID  
I
O
ShortCircuit to GND (V = 15 V)  
60  
CC  
I
Output Current Sink (V = 1 V)  
V
= +15 V, V = 0.2 V  
OUT  
1
SINK  
ID  
CC  
V
= +15 V, V  
= 2 V  
10  
26  
26  
27  
27  
CC  
OUT  
V
OH  
Output Voltage Swing, High (V = 30 V)  
R = 2 kW, T = 25°C  
CC  
L
A
40 v T v +105°C  
A
R = 10 kW, T = 25°C  
28  
L
A
40 v T v +105°C  
A
V
OL  
Output Voltage Swing, Low  
5.0  
50  
50  
mV  
R = 10 kW, T = 25°C  
L
A
40 v T v +105°C  
A
SR  
Slew Rate (AV = +1, V = 0.5 V to 3 V, V = 15 V, R = 2 kW, C = 100 pF)  
0.2  
0.5  
0.4  
0.9  
V/ms  
i
CC  
L
L
GBP  
Gain Bandwidth Product (V = 30 V, AV = +1,  
MHz  
CC  
R = 2 kW, C = 100 pF, f = 100 kHz, V = 10 mV ) (Note 4)  
L
L
IN  
PP  
THD  
Total Harmonic Distortion (f = 1 kHz, AV = 10,  
R = 2 kW, V = 30 V, V = 2 V  
0.08  
50  
%
)
PP  
L
CC  
OUT  
e
noise  
Equivalent Input Noise Voltage (f = 1 kHz, R = 100 W, V = 30 V)  
nV/Hz  
S
CC  
VOLTAGE REFERENCE  
I
Cathode Current  
Reference Voltage (I = 1 mA)  
1 to 100  
2.5  
mA  
V
K
V
ref  
T = 25°C  
2.49  
2.48  
2.51  
2.52  
30  
K
A
40 v T v +105°C  
2.5  
A
DV  
Reference Deviation over Temperature (V = V , I = 10 mA, 40 v T v  
A
+105°C) (Note 4)  
7.0  
mV  
ref  
KA  
ref  
K
I
Minimum Cathode Current for Regulation (V w 2.45 V )  
40  
75  
mA  
min  
KA  
f
I ZKA I  
Dynamic Impedance (Note 3)  
(V = V , I = 1 mA to 100 mA, f < 1 kHz)  
0.2  
0.5  
W
KA  
ref  
K
2. The input commonmode voltage of either input signal should not be allowed to go negative by more than 0.3 V. The upper end of the  
commonmode range is V 1.5 V. Both inputs can go to V + 0.3 V without damage.  
CC  
CC  
3. The Dynamic Impedance is defined as l ZKA l = DV / DI .  
KA  
K
4. Guaranteed by design and/or characterization.  
http://onsemi.com  
4
 
NCS1002  
25  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
20  
15  
10  
5
OP1  
0
50 30 10 10  
30  
50  
70  
90  
110 130  
50 30 10  
10  
30  
50  
70  
90  
110  
TEMPERATURE (°C)  
TEMPERATURE (°C)  
Figure 1. Input Offset Voltage vs. Temperature  
Figure 2. IB vs. Temperature  
2.6  
2.58  
2.56  
2.54  
2.52  
2.5  
2.52  
2.51  
2.5  
2.48  
2.46  
2.44  
2.42  
2.4  
2.49  
2.48  
0
10  
20 30 40 50 60 70 80 90 100  
40  
20  
0
20  
40  
60  
80  
100  
CATHODE CURRENT IK (mA)  
TEMPERATURE (°C)  
Figure 3. Vref as a Function of IK  
Figure 4. Vref Over Temperature  
S Stable; U Unstable  
0.5  
0.45  
0.4  
25  
20  
15  
14  
13  
12  
11  
10  
9
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
u
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
u
u
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
u
u
u
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
u
u
u
u
s
s
s
s
s
s
s
s
s
s
s
s
s
s
u
u
u
u
u
u
s
s
s
s
s
s
s
s
s
s
s
s
u
u
u
u
u
u
s
s
s
s
s
s
s
s
s
s
s
s
u
u
u
u
u
u
s
s
s
s
s
s
s
s
s
s
s
s
u
u
u
u
u
u
s
s
s
s
s
s
s
s
s
s
s
s
u
u
u
u
u
u
s
s
s
s
s
s
s
s
s
s
s
s
u
u
u
u
u
s
s
s
s
s
s
s
s
s
s
s
s
s
u
u
u
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
u
u
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
u
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
0.35  
0.3  
8
7
6
5
4
3
0.25  
0.2  
2
1
0.5  
100 pF 500 1000 1500 2000 3 nF  
4
5.8  
40302010 0 10 20 30 40 50 60 70 80 90 100  
CAPACITIVE LOAD ON Vref (Pin 3)  
TEMPERATURE (°C)  
Figure 5. Region of Reference Stability vs.  
Capacitive Load (Pin 3)  
Figure 6. Ref Dynamic Impedance vs.  
Temperature  
http://onsemi.com  
5
NCS1002  
120  
100  
80  
120  
100  
80  
60  
40  
20  
0
25°C  
40°C  
40°C  
25°C  
105°C  
105°C  
60  
40  
20  
0
0
5
10  
15  
20  
25  
30  
35  
0
5
10  
15  
20  
25  
30  
35  
SUPPLY VOLTAGE (V)  
SUPPLY VOLTAGE (V)  
Figure 7. NCS1002 PSRR vs. Supply Voltage  
Figure 8. NCS1002 CMRR vs. Supply Voltage  
10  
5
2
1
0.5  
0.2  
0.1  
0.05  
0.02  
0.01  
0.005  
0.002  
0.001  
500  
FREQUENCY (Hz)  
20  
50  
100  
200  
1k  
2k  
5k  
10k  
20k  
Figure 9. THD+N  
http://onsemi.com  
6
NCS1002  
http://onsemi.com  
7
NCS1002  
ORDERING INFORMATION  
Device  
Package  
Shipping  
NCS1002DR2G  
SOIC8  
(PbFree)  
2500 / Tape & Reel  
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging  
Specifications Brochure, BRD8011/D.  
http://onsemi.com  
8
NCS1002  
PACKAGE DIMENSIONS  
SOIC8 NB  
CASE 75107  
ISSUE AJ  
NOTES:  
1. DIMENSIONING AND TOLERANCING PER  
ANSI Y14.5M, 1982.  
2. CONTROLLING DIMENSION: MILLIMETER.  
3. DIMENSION A AND B DO NOT INCLUDE  
MOLD PROTRUSION.  
X−  
A
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)  
PER SIDE.  
8
5
4
5. DIMENSION D DOES NOT INCLUDE DAMBAR  
PROTRUSION. ALLOWABLE DAMBAR  
PROTRUSION SHALL BE 0.127 (0.005) TOTAL  
IN EXCESS OF THE D DIMENSION AT  
MAXIMUM MATERIAL CONDITION.  
6. 75101 THRU 75106 ARE OBSOLETE. NEW  
STANDARD IS 75107.  
S
M
M
B
0.25 (0.010)  
Y
1
K
Y−  
MILLIMETERS  
DIM MIN MAX  
INCHES  
G
MIN  
MAX  
0.197  
0.157  
0.069  
0.020  
A
B
C
D
G
H
J
K
M
N
S
4.80  
3.80  
1.35  
0.33  
5.00 0.189  
4.00 0.150  
1.75 0.053  
0.51 0.013  
C
N X 45  
_
SEATING  
PLANE  
1.27 BSC  
0.050 BSC  
Z−  
0.10  
0.19  
0.40  
0
0.25 0.004  
0.25 0.007  
1.27 0.016  
0.010  
0.010  
0.050  
8
0.020  
0.244  
0.10 (0.004)  
M
J
H
D
8
0
_
_
_
_
0.25  
5.80  
0.50 0.010  
6.20 0.228  
M
S
S
X
0.25 (0.010)  
Z
Y
SOLDERING FOOTPRINT*  
1.52  
0.060  
7.0  
4.0  
0.275  
0.155  
0.6  
0.024  
1.270  
0.050  
mm  
inches  
ǒ
Ǔ
SCALE 6:1  
*For additional information on our PbFree strategy and soldering  
details, please download the ON Semiconductor Soldering and  
Mounting Techniques Reference Manual, SOLDERRM/D.  
ON Semiconductor and  
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice  
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability  
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.  
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All  
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights  
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications  
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should  
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,  
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death  
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal  
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.  
PUBLICATION ORDERING INFORMATION  
LITERATURE FULFILLMENT:  
N. American Technical Support: 8002829855 Toll Free  
USA/Canada  
Europe, Middle East and Africa Technical Support:  
Phone: 421 33 790 2910  
Japan Customer Focus Center  
Phone: 81357733850  
ON Semiconductor Website: www.onsemi.com  
Order Literature: http://www.onsemi.com/orderlit  
Literature Distribution Center for ON Semiconductor  
P.O. Box 5163, Denver, Colorado 80217 USA  
Phone: 3036752175 or 8003443860 Toll Free USA/Canada  
Fax: 3036752176 or 8003443867 Toll Free USA/Canada  
Email: orderlit@onsemi.com  
For additional information, please contact your local  
Sales Representative  
NCS1002/D  

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