AC POWER CONTROLLERS
DESCRIPTION:
The LS7314 - LS7315 are MOS integrated circuits specifically
designed for appliance motor speed control, lighting control,
etc. I/Os (PLs) are provided for selecting/indicating from one to
ten power levels. The LS7315 is designed for pushbutton con-
trol. The LS7314 is designed for touch control. (See Figures 4A
and 4B)
INPUT/OUTPUT DESCRIPTION:
PL1-PL10 (Pins 1-8, 15, 16)
Ten inputs/outputs for selecting ten output phase angles (pow-
er levels). When no power level is selected (such as after sys-
tem power-up) PL1-PL10 all act as inputs. When a power level
is selected by applying a logic zero at one of these inputs for
T
H
time (See Dynamic Characteristics), the output (TRIG) is
turned on at the phase angle selected and the PL input switch-
es status to become an output in order to drive a display, such
as an LED. It switches back to the input state when another PL
input is activated or when OFF is selected. (See Note 1)
OFF (Pin 10)
If TRIG is on, a logic 0 applied to the OFF input for T
H
time
turns TRIG output off and switches the selected PL back to the
input state. If TRIG is off, activating OFF leaves the circuit un-
affected. Following an OFF activation, TRIG can be turned on
by applying any PL input. (See Note 1)
SYNC (Pin 12)
Input for PLL reference frequency (50Hz/60Hz). All internal
clock frequencies are synchronized with the SYNC input.
CAP (Pin 11)
Input for component connection for the PLL filter capacitor.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PL3
PL4
PL5
PL6
PL7
PL8
PL9
P L 1 0
PL2
TRIG
Vss (+V)
SYNC
CAP
OFF
V
DD
(-V)
LSI
CONNECTION DIAGRAM - TOP VIEW
LS7314
FIGURE 1
PL1
A
7314-040197-1
APPLICATIONS:
Universal and shaded-pole motor speed control for modern
appliance designs. Eliminates awkward mechanical switch
assemblies and multi-tapped motor windings. (See Fig. 4C)
Multi-level light switches. (See Fig. 4D)
TRIG (Pin 13)
This output is designed to drive a triac in series with the
load and control its firing angle with respect to the AC line.
A 1ms output pulse width is provided to enable the triac to
fire even with inductive loads which cause significant phase
delays between voltage and current.
Vss (Pin 14)
Supply voltage positive terminal.
V
DD
(Pin 9)
Supply voltage negative terminal (ground).
NOTE 1: LS7315 has an internal pullup resistor on this in-
put and LS7314 does not. (See DC Electrical Character-
istics.)
LSI/CSI
LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 (631) 271-0400 FAX (631) 271-0405
LS7314-7315
UL
A3800
T
W
FIGURE 2. TRIG PHASE ANGLE
SYNC
TRIG
FEATURES:
10 I/Os to Select/Indicate up to ten Power Levels
Inputs activated by Touch or Pushbutton Switch
Output switches pure and precise AC Power to Load
Operates with 50Hz/60Hz line frequency
Rugged, latchup-free process technology
+10V to +14V operation (Vss-V
DD
)
LS7314, LS7315 (DIP;
LS7314-S, LS7315-S (SOIC) - See Figure 1
7314-033197-2
*LS7314 & LS7315 **LS7315-51
(1)
The TRIG Phase Angles shown in TABLE 1 are referenced
to the SYNC input. values are mask programmable.
(2)
The percentage of Full Power delivered to a resistive load
by the Triac Switch.
FIGURE 4C VALUE TABLE
CONDITION C2(F)
(1), (3)
0.47
(1), (4)
0.33
(2), (3)
0.68
(2), (4)
0.47
(1) No LEDs
(2) 5mA LEDs
(3) 115VAC, C2 = 200V (4) 220VAC, C2 = 400V
FIGURE 4C and 4D NOTES
NOTE 1: Value for 5mA LEDs.
NOTE 2: Use zener which produces 6.2V 5% at 500A or
less, i. e. P/N MZ4627.
NOTE 3: R6-C6 Snubber Network may be required for large
inductive loads.
NOTE 4: Tie all unused touch inputs together and return to Vss
through 100k Ohm, 1/4W resistor.
NOTE 5: The AC Mains Polarity shown is required for Touch
Control applications.
D R I V E R
D R I V E R
10
15
8
C O N T R O L
LOGIC
D R I V E R
DIGITAL
C O M P A R A T O R
P O W E R
L E V E L
ROM
P H A S E
ANGLE
P O I N T E R
P H A S E - L O C K E D
L O O P
AND
C L O C K
G E N E R A T O R
L E V E L 1
L E V E L 1 0
11
+
-
+
-
+
-
V
SS
V
DD
TRIG
CAP
OFF
PL1
P L 1 0
13
FIGURE 3. LS7314-LS7315 BLOCK DIAGRAM
12
+
-
V
SS
V
DD
SYNC
TABLE 1. TRIG PHASE ANGLES, (1)
PL * % PWR (2) ** %PWR (2)
1
43
8
81
40
2
55
16
105
67
3
68
26
116
77
4
81
40
120
80
5
95
55
123
83
6
108
69
129
87
7
122
82
134
90
8
134
90
160
99
9
147
96
167
99
10
160
99
175
99
R3
OFF
PL1
P L 1 0
FIGURE 4A. PUSHBUTTON INTERFACE FOR LS7315
V
DD
R 3 = 1 0 K
, 1 / 4 W
R8
R8
R7
R8
R8
R7
R8
R8
R7
Vss
TP
TP
TP
P L 1 0
PL1
OFF
FIGURE 4B. TOUCH INTERFACE FOR LS7314
S E E N O T E 4
R7 = 1M
to 5M
, 1/4W (Select for Sensitivity)
R 8 = 2 . 7 M
, 1/4W for 115VAC Mains
R 8 = 4 . 7 M
, 1/4W for 220VAC Mains
M
P
N
L
MT2
G
MT1
C1
R1
R2
R9
C2
Z1
C5
D1
-
+
C4
C3
13
11
SYNC
CAP
12
9
10
15
8
14
Z2
R4
R5
V
SS
OFF
PL1
P L 1 0
L S 7 3 1 4 - L S 7 3 1 5
FIGURE 4C. MOTOR SPEED CONTROL APPLICATION
V
DD
R6
C6
TRIG
OFF
PL1
P L 1 0
AC
MAINS
SEE NOTE 3
T
SEE NOTE 5
Use Fig. 4A or 4B
Interface Circuits
C1 = 0.15F, 200V (400V)
R1 = 82
C2 = See Figure 4 Value Table
R2 = 1.5M
C3 = 0.047F
R4 = 560
(See Note 1)
C4 = 470pF
R5 = 10k
C5 = 220uF
R6 = 1.8k
, 1W (2W)
C6 = 0.47F, 200V (400V)
R9 = 100
L = 100H (200H)
Z1 = 13V 5%, 1W
D1 = 1N4148
Z2 = 6.2V, 1/4W (See Note 2)
T = Q4004L4 (Q5004L4) Typical
All resistors 1/4W, all capacitors 25V unless otherwise specified.
Indicates component change for 220VAC Mains.
*
*
*
*
*
7314-033197-3
*
P
N
1 0 0 H
MT2
G
MT1
2 0 0 V
1 3 V
2 2 0 F
1 N 4 1 4 8
-
+
4 7 0 p F
13
11
SYNC
CAP
12
9
10
15
8
14
6 . 2 V , 1 / 4 W ( S e e N o t e 2 )
1K
10K
V
SS
OFF
PL1
P L 1 0
L S 7 3 1 4 - L S 7 3 1 5
FIGURE 4D. MULTI-LEVEL WALL SWITCH DIMMER APPLICATION
V
DD
TRIG
OFF
PL1
P L 1 0
115V
AC
MAINS
Q 4 0 0 4 4 L 4
0 . 1 5 F
INCANDESCENT
LAMP LOAD
2W
2 0 0 V
0 . 6 8 F
. 0 4 7 F
. 0 4 7 F
82
Use Fig. 4A or Fig. 4B
Interface Circuits
1 . 5 M
All Resistors 1/4W, all Capacitors 25V
unless otherwise specified.
Component Values are for use with
115VAC Mains and 2.5mA LEDs.
1W
Input Pull-up Resistance:
For LS7315
PL, OFF
R
IN
50
100
200
k
-
Output Voltage:
TRIG, HI
V
OH
Vss
-
-
V
-
TRIG, LO
V
OL
-
Vss - 8
-
V
-
Output Current:
TRIG, Sink
I
OS
25
-
-
mA
Vss = +12V
V
OL
= Vss - 4V
PL Source
I
OPL
5
-
-
mA
V
OP L
= Vss - 1V
DYNAMIC CHARACTERISTICS:
SYMBOL
MIN
TYP
MAX
UNIT
CONDITION
SYNC frequency
f
S
40
-
70
Hz
-
PL, OFF hold time
T
H
50
-
infinite
ms
60Hz SYNC
T
H
60
-
infinite
ms
50Hz SYNC
TRIG Pulse Width
T
w
-
1.0
-
ms
60Hz SYNC
T
w
-
1.2
-
ms
50Hz SYNC
MAXIMUM RATINGS:
PARAMETER
SYMBOL
VALUE
UNIT
Storage Temperature
T
STG
-65 to +150
C
Operating Temperature
T
A
0 to +80
C
DC Supply Voltage
Vss - V
DD
+20
V
Any Input Voltage
V
IN
Vss - 20 to Vss + 0.5
V
DC ELECTRICAL CHARACTERISTICS:
(TA = 25C, all voltages referenced to V
DD
)
SYMBOL
MIN
TYP
MAX
UNIT
CONDITION
Supply Voltage
V
SS
+10
+12
+14
V
-
Supply Current
I
DD
-
1.2
2
mA
Vss = 12V, outputs off
Input Voltage:
SYNC, LO
V
ISL
0
-
1/3Vss
V
-
SYNC, HI
V
ISH
2/3Vss
-
Vss
V
-
All other inputs, LO
V
IL
0
-
1/4Vss
V
-
All other inputs, HI
V
IH
1/2Vss
-
Vss
V
-
Input Current:
SYNC Input
I
H
-
-
110
A
With Series 1.5M
Resistor to 115VAC
7310-032597-4
The information included herein is believed to be
accurate and reliable. However, LSI Computer Systems,
Inc. assumes no responsibilities for inaccuracies, nor for
any infringements of patent rights of others which may
result from its use.
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