NCS5650 [ONSEMI]
2 Amp PLC Line Driver; 2安培PLC线路驱动器
| 型号： | NCS5650 |
| 厂家： | 
ONSEMI |
| 描述： | 2 Amp PLC Line Driver |
| 文件： | 总9页 (文件大小：156K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NCS5650
2 Amp PLC Line Driver
The NCS5650 is a high efficiency, Class A/B, low distortion power
line driver. Its design is optimized to accept a signal from a Power Line
Carrier modem. The output stage is designed to drive up to 2 A peak
into an isolation transformer or simple coil coupling to the mains. At
output current of 1.5 A, the output voltage is guaranteed to swing
within 1 V or less of either rail giving the user improved SNR. Power
supply options are single−sided 6 V to 12 V and dual balanced
$3.0 V to $6.0 V. The input stage contains an operational amplifier
which can be configured as a unity gain follower buffer or used to
provide the first stage of a 4−pole low pass filter. In addition the
NCS5650 offers a current limit programmable with a single resistor,
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MARKING
DIAGRAM
20
1
NCS
5650
ALYWG
G
20
1
QFN20
CASE 485E
R−
, together with a current limit flag.
Limit
The device provides two independent thermal flags with hysteresis:
a thermal warning flag to let the user know the internal junction
temperature has reached a user programmable thermal warning
threshold and a thermal error flag that indicates the internal junction
temperature has exceeded 150°C. In shutdown mode the NCS5650
output goes into a high−impedance state. The NCS5650 comes in a 20
lead QFN package (4x4x1mm) with an exposed thermal pad for
enhanced thermal reliability.
A
L
Y
W
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
Features
ORDERING INFORMATION
• Rail−to−Rail Drop of Only $1 V with I = 1.5 A
out
Device
Package
Shipping
• V : Single−Sided (6 V to 12 V) or Dual−Balanced $6.0 V
CC
NCS5650MNTXG
QFN20 3000 / Tape & Reel
(Pb−Free)
• Flexible 4th−Order Filtering
• Current−Limit Set with One Resistor
†For information on tape and reel specifications,
including part or orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
• Diagnostic Flags Level Shifted to V_ꢀ c to Simplify Interface with
External MCU
♦ Thermal Warning Flag with Flexible Threshold Setting
♦ Thermal Error flag and Shutdown
♦ Overcurrent Flag
• Enable/Shutdown Control
• Extended Junction Temperature Range: −40°C to +125°C
• Small Package: 20−pin 4x4x1mm QFN with Exposed Thermal Pad
• Optimized for Operation in the Cenelec A to D Frequency Band
• This is a Pb−Free Device
Typical Applications
• Power Line Communication Driver in AMM and AMR Metering
Systems
• Valve, Actuator, and Motor Driver
• Audio
© Semiconductor Components Industries, LLC, 2010
1
Publication Order Number:
May, 2010 − Rev. 0
NCS5650/D
NCS5650
Exposed
Pad
20 19 18 17 16
1
2
3
4
5
15
14
13
12
11
NCS5650
6
7
8
9 10
(Top View)
NOTE: The Exposed Pad (EP) on package bottom must be attached to a heat−sinking
conduit. The Exposed Pad must be electrically connected to V
.
EE
Figure 1. Pin Connections
V
WARN
V
CC
V
COM
V
ꢀ C
Amp A (+)
Amp A_Out
Amp A (−)
T
T
W
SD
LIM
Enable
I
Amp B (+)
Amp B_Out
Amp B (−)
GND
V
EE
R
LIM
FLAG
ꢀ
C
Figure 2. NCS5650 Block Diagram
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2
NCS5650
PIN DESCRIPTION
Pin#
1
Symbol
Enable
Pin Function
Enable/ Shutdown Input (Low = Enable)
2
V
com
Virtual Common at (V − V )/2 (See Note 1 Below)
CC EE
3
Amp A (+)
Amp A (−)
Amp A Out
Positive (+) Input of Op Amp A
4
Negative (−) Input of Op Amp A
5
Output of Op Amp A
6
V
CC
V
CC
Positive supply for amplifiers
7
Positive supply for amplifiers
8
Amp B Out
Amp B Out
Output of Op Amp B
9
Output of Op Amp B
10
11
12
13
14
15
16
17
18
19
20
21
V
V
Negative supply for amplifiers
EE
EE
Negative supply for amplifiers
Amp B (−)
Amp B (+)
V−Warn
Negative (−) Input of Op Amp B
Positive (+) Input of Op Amp B
Thermal Warming Temp is set by a voltage determined by the ratio of two resistors (see Figure 6).
Output B Current Limit Set Resistor (R−Limit) to Pin 10
Current Limit Flag (High indicates Output Current w limit set by R−Limit)
Thermal Shutdown Flag (High indicates Junction Temperature w 150°C)
Thermal Warning Flag (High indicates Junction Temperature w threshold set by V−Warn)
Digital supply for logic flag thresholds
R−Limit
I
flag
LIM
TSD flag
TW flag
V_ꢀ c
GND_ꢀ c
Exposed Pad
Digital ground for logic flag thresholds
The exposed pad should be connected to the lowest voltage potential in the circuit.
1. The principal purpose of pin 2 is to facilitate the implementation of the 4th−order lowpass filter when operating on single−sided supply
by providing a virtual common at mid−supply. When operating on dual balanced supplies, Pin 2 must be left floating and the external
common of the dual supplies should be used for the filter implementation.
MAXIMUM RATINGS
Symbol
Rating
Value
Unit
V
V
S
Supply Voltage (V to V )
EE
13.2
CC
V
ICR
Input Common Mode Voltage Range
(V − 0.3V, V + 0.3V)
V
EE
CC
T
Maximum Junction Temperature (Operating Range −40°C to 125°C)
Storage Temperature
160
°C
°C
J
T
stg
−65 to 150
260
Mounting Temperature (Infrared or Convection − 30 sec)
Moisture Sensitivity Level
MSL
Level 1
33
ꢁ
Thermal Resistance
20−Pin QFN with Exposed Thermal Pad
°C/W
JA
2
(With exposed thermal pad soldered to 9 in of 2 oz Cu PCB area (62 mil thick
board) using 14 vias each with an 18 mil diameter and 1.5 mils Cu walls. See
Application Information.)
Logic control pins
Enable, R , I , TSD, TW, Vꢀ c
LIMIT LIM
5.5
V
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.
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3
NCS5650
ELECTRICAL CHARACTERISTICS V = 12 V All limits apply over the temperature range, T = –40°C to +125°C, unless
S
J
otherwise noted. Total supply V = V − V
.
S
CC
EE
NCS5650
Typ
Min
Max
Parameter
Symbol
Condition
Units
INPUT OPERATIONAL AMPLIFIER (Op Amp A)
Offset Voltage
Input Offset Voltage
V
V
= +12 V, V = 0 V
3
10
150
ꢂ
mV
uV/V
nA
OS
CC
EE
Offset vs Power Supply
Input Bias Current (Note 2)
Input Voltage Noise Density
PSRR
V
CC
= +6 V, V = −6 V
25
EE
I
B
e
f = 1 kHz, V = GND,
250
nV/√Hz
n
IN
BW = 131 kHz
Input Voltage Range
Common−Mode Voltage Range
V
CM
V
V
CC
3
−
V
EE
− 0.1
Common−Mode Rejection Ratio
Input Impedance
CMRR
V
EE
− 0.1 v V
v V − 3
70
85
dB
CM
CC
Differential
0.2 | 1.5
0.2 | 3
100
Gꢃ | pF
Gꢃ | pF
dB
Common−Mode
Open−Loop Gain (Note 2)
Frequency Response
Gain Bandwidth Product
Full Power Bandwidth (Note 2)
Slew Rate
R = 500 ꢃ
80
L
GBW
80
1.5
MHz
MHz
V/ꢀ s
%
G = +5, V = 11 V
200
out
PP
SR
60
Total Harmonic Distortion + Noise
THD+N
G = +1, R = 500 ꢃ, V = 8 V , f =
0.015
L
in
O
PP
1 kHz, C = 220 ꢀ F, C = 330 ꢀ F
out
G = +1, R = 50 ꢃ, V = 8 V , f =
0.023
L
O
PP
100 kHz, C = 220 ꢀ F, C = 330 ꢀ F
in
out
Output
Voltage Output Swing from Rail
From Positive Rail
From Negative Rail
Short−Circuit Current
Output Impedance
Capacitive Load Drive
V
= +12 V, V = 0 V
CC EE
V
R = 500 ꢃ ꢄꢅ V ꢆꢇ
0.3
0.3
1
1
V
V
OH
L
CC
V
R = 500 ꢃ ꢄꢅ V ꢆꢇ
L CC
OL
SC
I
280
0.25
100
mA
ꢃ
Z0
Closed Loop G = +4, f = 100 kHz
C
pF
LOAD
OUTPUT OPERATIONAL AMPLIFIER (Op Amp B)
Offset Voltage
Input Offset Voltage
V
V
V
= +12 V, V = 0 V
3
10
mV
ꢀ V/V
nA
OS
CC
EE
Offset vs Power Supply
Input Bias Current (Note 2)
Input Voltage Noise Density
PSRR
= +12 V, V = 0 V
25
150
1
CC
EE
I
B
e
f = 1 kHz, V = GND,
125
85
nV/√Hz
n
IN
BW = 131 kHz
Input Voltage Range
Common−Mode Voltage Range
V
CM
V
V
−
V
EE
CC
3
− 0.1
Common−Mode Rejection Ratio
CMRR
V
− 0.1 v V
v V − 3
70
dB
EE
CM
CC
2. Guaranteed by characterization or design.
3. Formula accuracy requires a resistor with $1% tolerance.
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4
NCS5650
ELECTRICAL CHARACTERISTICS V = 12 V All limits apply over the temperature range, T = –40°C to +125°C, unless
S
J
otherwise noted. Total supply V = V − V
.
S
CC
EE
NCS5650
Typ
Min
Max
Parameter
Symbol
Condition
Units
OUTPUT OPERATIONAL AMPLIFIER (Op Amp B)
Input Impedance
Differential
0.2 | 11
0.2 | 22
100
Gꢃ | pF
Gꢃ | pF
dB
Common−Mode
Open−Loop Gain (Note 2)
Frequency Response
R = 5 ꢃ
L
80
Gain Bandwidth Product
Full Power Bandwidth (Note 2)
Slew Rate
GBW
60
400
70
MHz
kHz
V/ꢀ s
%
G = +2, V = 11 V
200
out
PP
SR
Total Harmonic Distortion + Noise
THD+N
G = +1, R = 50 ꢃ,
0.015
L
PP
V
O
= 8 V , f = 1 kHz
G = +1, R = 50 ꢃ,
0.067
L
V
= 8 V , f = 100 kHz
O
PP
Output
Voltage Output Swing from Rail
From Positive Rail
From Negative Rail
Voltage Output Swing from Rail
From Positive Rail
Negative Rail
V
= +12 V, V = 0 V
CC EE
V
I
I
= 1.5 A to Mid−Supply
= 1.5 A to Mid−Supply
0.7
0.4
1
1
V
V
OH
out
out
V
OL
V
CC
= +6 V, V = −6 V
EE
V
OH
I
I
= 1.5 A to GND
= 1.5 A to GND
0.7
0.4
1
1
V
V
out
out
V
OL
Output Impedance
Enabled Mode
Z0
Closed Loop G = +1,
f = 100 kHz
0.065
12
ꢃ
Mꢃ
Shutdown Mode
Capacitive Load Drive
C
500
nF
LOAD
BOTH AMPLIFIERS COMBINED
Junction Temperature
T
J
°C
°C
°C
At Shutdown (Note 2)
+150
+160
+135
10
At Recovery from Shutdown
Thermal Warning Tolerance
T
is determined by the ratio of
warning
two resistors (see Figure 8) (Note 3)
Current Limit Tolerance
I−Limit is determined by a single
resistor (see Figure 5 text) (Note 3)
50
mA
Power Supply
Operating Voltage Range
V
S
V
Single−Supply Operation (V Tied
6 to 12
13.2
EE
to System Common)
Dual Balanced−Supply operation
3.0 to 6.0
Quiescent Current
Enabled Mode
I
Q
V = +6 V, V = −6 V
CC EE
20
120
40
150
mA
ꢀ A
Shutdown Mode
V
COM
V
= 12 V, V = 0 V
5.8
6.0
6.2
V
CC
EE
Internal resistor divider.
Bypass purposes only.
2. Guaranteed by characterization or design.
3. Formula accuracy requires a resistor with $1% tolerance.
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5
NCS5650
ELECTRICAL CHARACTERISTICS V = 12 V All limits apply over the temperature range, T = –40°C to +125°C, unless
S
J
otherwise noted. Total supply V = V − V
.
S
CC
EE
NCS5650
Typ
Min
Max
Parameter
LOGIC INPUT/OUTPUT
Logic/flag Supply Range
Symbol
Condition
Units
V_ꢀ c
Logic/flag supply for operation with
external MCU
3.0
5.5
V
Reference Point for GND_ꢀ c
V
ꢀ
g c
With Single−Sided Power Supply
V
EE
(Pins 10 and 11) Connected to System
Common
With Dual−Balanced Power Supply
Common of Dual Supply Connected to
System Common
Shutdown Input Mode
Output Enabled
Ve/s LOW
Ve/s HIGH
E/S Pin Open or Forced LOW
E/S Pin Forced HIGH
V
V
+
V
V
ꢀ
ꢀ
0.8
g c
g c
− 0.4
Output Shutdown
V
g c
V_ꢀ c
ꢀ
+ 2
Output Enabled
Ie/s LOW
Ie/s HIGH
E/S Pin LOW
E/S Pin HIGH
0.1
10
60
5
ꢀ A
ꢀ A
ns
ꢀ s
Output Shutdown
Output Shutdown Time
Output Enable Time (Note 2)
All Flag Outputs
10
HIGH State
V
V
V
ꢀ
+ 2
g c
LOW State
V
+
ꢀ
0.8
g c
2. Guaranteed by characterization or design.
3. Formula accuracy requires a resistor with $1% tolerance.
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6
NCS5650
APPLICATIONS INFORMATION
Bypassing
Exposed Thermal Pad
The NCS5650 is capable of delivering 1.5 A, into a
reactive load. Output signal swing should be kept as high as
possible to minimize internal heat generation to keep the
internal junction temperature as low as possible. The
NCS5650 can swing to within 1 V of either rail without
adding distortion. An exposed thermal pad is provided on
the bottom of the device to facilitate heat dissipation.
Application Note AND8402/D provides considerable
details for optimizing the soldering down of the exposed
Optimal stability and noise rejection will be implemented
with power−supply bypassing placed as physically close to
the device as possible. A parallel combination of 10 ꢀ F and
0.01 ꢀ F is recommended (ceramic and tantalum,
respectively) for each sensitive point. For either
single−supply operation or split supply operation, bypass
should be placed directly across V to V . In addition add
CC
EE
bypass from V to GND . Reference Figure 4.
ꢀ C
ꢀ c
VCOM VCC
pad.
A very good example of the exposed pad
implementation is provided in the layout information
included with the NCS5650 Demo Board. The demo board
implements 14 vias, each with an 18 mil diameter and
1.5 mils Copper walls.
C11
C13
C5
C14
2
6
7
Multi−Feedback Filter (MFB)
CENELEC EN 50065−1 is a European standard for
signaling on low−voltage electrical installations in the
frequency range 3 kHz to 148. 5kHz. More specifically Part
1 of that specification deals with frequency bands and
electromagnetic disturbances introduced into the electrical
mains. A practical solution to meet this requirement is to
place a 4th−order filter between the output of the modem and
the isolation transformer connected to the mains. In this
datasheet a MFB filter topology is proposed to help meet the
requirements of the CENELEC standard. Four (4) pole
filters require two op amps for implementation. The
NCS5650 has an input pre−amplifier and an output power
amplifier. Therefore only passive components (R’s and C’s)
need to be added. In addition the NCS5650 has a mid−supply
VO
11
10
C9
C10
C6
VEE Vꢀ C
Figure 4.
Current Limit (R−Limit)
The 2 A output current of the NCS5650 can be
programmed by the simple addition of a resistor (R
from pin 15 to V (see Figure 5). If the load current tries to
flag will go logic High
signaling the user to take any necessary action. When the
current output recovers, the I flag will return to logic
Low. The curve in Figure 5 is tolerance typically to 50 mA.
Unlike traditional power amplifiers the NCS5650 current
limits functions both when sourcing and sinking current. To
calculate the resistance required to program a desired
current limit the following equation can be used:
)
Limit
EE
exceed the set current limit, the I
LIM
virtual common at pin 2 (V ) to facilitate implementation
com
LIM
of the filter topology when powered from a single−sided
power supply.
Figure 3 below shows the frequency response for each
stage and the overall filter.
16
14
1.215
RCL
ILIM
+
8197
Total Gain
12
10
AmpA Gain
8
6
VO
AmpB Gain
4
15
11
2
0
RLIM
−2
0.1
Figure 5.
1
10
100
1000
FREQUENCY (kHz)
Figure 6 graphically illustrates the required resistance in
ohms to program the current limit.
Figure 3. Amplifier Voltage vs. Frequency
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7
NCS5650
20
15
10
5
3
2.75
2.5
2.25
2
1.75
1.5
1.25
1
0
0
0.25
0.5
0.75
1
1.25 1.5
1.75
2
−40 −20
0
20
40
60
80 100 120 140
T (°C)
J
CURRENT LIMITS (A)
Figure 6.
Figure 8.
Thermal Shutdown and Thermal Warning Flag
Virtual Common (Vcom
)
In the event load conditions cause internal over−heating
the amplifier will go into shutdown to prevent damage.
Under these conditions pin 17 the TSD flag (Thermal Shut
Down) will go logic High. Thermal shutdown takes place at
an internal junction temperature of approximately 160°C;
the amplifier will recover to the Enabled mode when the
junction temperature cools back down to approximately
145°C.
The principal purpose of V
is to provide a convenient
com
virtual common for implementing the 4th−order CENELEC
filter when operating on single−sided power supply. When
operating on balanced split supplies it is recommended to
use the power supply common for the filter implementation
and to leave V
floating.
com
Digital Power Supply GND−Reference and Translators
In many mixed signal applications analog GND and
digital GND are not always at the same potential. To
minimize GND loop issues, the NCS5650 has a separate
GND pin (pin 20) which should be used to reference the
digital supply and the warning flags (pins 16, 17, and 18). In
most applications this would be the same GND reference
used for the PLC modem. Please note that at some point in
the application digital GND and analog GND must be tied
together.
The user has the option to avoid entering into the TSD
mode by monitoring the junction temperature via the
Thermal Warning feature. Figure 8 shows how the user can
select any junction temperature (T
to 145°C by applying the appropriate voltage to pin 14. A
simple way to implement this feature is by setting the ratio
) in the range 105°C
warn
of a voltage divider between V (pins 6,7) and V (the
CC
EE
negative supply, pin 10 or 11). The voltage ratio required to
program the thermal warning of the NCS5650 can be
calculated using the following equation:
−3
VTW = 6.665 x 10 (T ) + 1.72
J
Figure 8 illustrates the linearity of the internal junction
temperature to the required voltage on pin 14 (T
).
warn
VCC
R9
14
VO
R10
VEE
Figure 7.
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8
NCS5650
PACKAGE DIMENSIONS
QFN20, 4x4, 0.5P
CASE 485E−01
ISSUE A
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED TERMINAL
AND IS MEASURED BETWEEN 0.15 AND 0.30 MM
FROM THE TERMINAL TIP.
A
B
D
A3
EXPOSED Cu
MOLD CMPD
PIN ONE
REFERENCE
4. COPLANARITY APPLIES TO THE EXPOSED PAD
AS WELL AS THE TERMINALS.
E
A1
2X
MILLIMETERS
DETAIL B
DIM MIN
MAX
1.00
0.05
0.15
C
OPTIONAL CONSTRUCTIONS
A
A1
A3
b
0.80
---
2X
0.20 REF
0.15
C
0.20
0.30
L
L
TOP VIEW
D
4.00 BSC
D2
E
2.70
2.90
4.00 BSC
(A3)
DETAIL B
L1
A
E2
e
2.70
2.90
0.10
C
0.50 BSC
0.20 REF
K
DETAIL A
L
0.35
0.00
0.45
0.15
OPTIONAL CONSTRUCTIONS
L1
0.08
C
SEATING
PLANE
A1
C
SIDE VIEW
SOLDERING FOOTPRINT*
0.10 C A B
4.30
20X
D2
0.58
DETAIL A
20X L
2.88
6
0.10 C A B
11
E2
1
1
2.88
4.30
20
K
20X b
e
0.10 C A B
0.05
PKG
OUTLINE
C
NOTE 3
20X
0.35
BOTTOM VIEW
0.50
PITCH
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free 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.
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NCS5650/D
相关型号：
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