LSI/CSI
UL
®
LS7314-7315
(631) 271-0400 FAX (631) 271-0405
LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747
A3800
AC POWER CONTROLLERS
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
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)
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.
7314-040197-1
A
CONNECTION DIAGRAM - TOP VIEW
PL3
PL4
PL5
PL6
PL7
PL8
PL9
1
2
3
4
5
6
7
16
15
14
13
12
11
10
9
FIGURE 1
LS7314
LSI
PL2
PL1
Vss (+V)
TRIG
SYNC
CAP
OFF
V
DD
(-V)
PL10 8
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.)
FIGURE 2.
TRIG PHASE ANGLE Ø
SYNC
Ø
TRIG
T
W
FIGURE 3. LS7314-LS7315 BLOCK DIAGRAM
LEVEL 1
POWER
LEVEL
ROM
LEVEL 10
OFF
10
-
+
DRIVER
PL1
15
-
+
DRIVER
CONTROL
LOGIC
PHASE
ANGLE
POINTER
DIGITAL
COMPARATOR
DRIVER
13 TRIG
PL10
8
V
DD
-
+
PHASE-LOCKED
LOOP
AND
CLOCK
GENERATOR
V
DD
+
11
CAP
V
SS
V
SS
12
SYNC
-
TABLE 1. TRIG PHASE ANGLES, Ø
(1)
PL
1
2
3
4
5
6
7
8
9
10
Ø
*
43°
55°
68°
81°
95°
108°
122°
134°
147°
160°
% PWR
(2)
8
16
26
40
55
69
82
90
96
99
Ø
**
81°
105°
116°
120°
123°
129°
134°
160°
167°
175°
%PWR
(2)
40
67
77
80
83
87
90
99
99
99
FIGURE 4C and 4D NOTES
NOTE 1:
Value for 5mA LEDs.
NOTE 2:
Use zener which produces 6.2V ±5% at 500µA 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.
*LS7314 & LS7315
**LS7315-51
FIGURE 4C VALUE TABLE
CONDITION
(1), (3)
(1), (4)
(2), (3)
(2), (4)
(1) No LEDs
(3) 115VAC, C2 = 200V
C2(µF)
0.47
0.33
0.68
0.47
(2) 5mA LEDs
(4)
220VAC, C2 = 400V
(1)
(2)
The TRIG Phase Angles shown in TABLE 1 are referenced
to the SYNC input. Ø values are mask programmable.
The percentage of Full Power delivered to a resistive load
by the Triac Switch.
FIGURE 4A. PUSHBUTTON INTERFACE FOR LS7315
PL10
PL1
OFF
FIGURE 4B. TOUCH INTERFACE FOR LS7314
SEE NOTE 4
PL10
PL1
OFF
R8
R3
R7
R8
R7
R8
R7
Vss
V
DD
R8
TP
TP
R8
TP
R8
R3 = 10K , 1 / 4 W
R7 = 1M to 5M , 1/4W (Select for Sensitivity)
R8 = 2.7M , 1/4W for 115VAC Mains
R8 = 4.7M , 1/4W for 220VAC Mains
7314-033197-2
FIGURE 4C.
P
G
C1
R6
C6
MT1
T
MT2
MOTOR SPEED CONTROL APPLICATION
+
C5
-
Z1
C4
R9
C3
AC
MAINS
SEE NOTE 3
L
C2
D1
12
SYNC
9
V
DD
PL10
13
TRIG
11
CAP
14
L S 7 3 1 4 - L S 7 3 1 5 V
SS
PL1
15
OFF
10
SEE NOTE 5
M
R2
R1
8
PL10
N
PL1
OFF
R5
Use Fig. 4A or 4B
Interface Circuits
R4
Z2
C1 = 0.15µF, 200V (400V)
*
C2 = See Figure 4 Value Table
C3 = 0.047µF
C4 = 470pF
C5 = 220uF
C6 = 0.47µF, 200V (400V)
*
L = 100µH (200µH)
*
D1 = 1N4148
T = Q4004L4 (Q5004L4)
*
Typical
R1 = 82Ω
R2 = 1.5MΩ
R4 = 560Ω (See Note 1)
R5 = 10kΩ
R6 = 1.8kΩ, 1W (2W)
*
R9 = 100Ω
Z1 = 13V ± 5%, 1W
Z2 = 6.2V, 1/4W (See Note 2)
All resistors 1/4W, all capacitors 25V unless otherwise specified.
*
Indicates component change for 220VAC Mains.
FIGURE 4D. MULTI-LEVEL WALL SWITCH DIMMER APPLICATION
P
G
MT1
Q40044L4
.047µF
+
-
13V
1W
220µF
470pF
.047µF
200V
0.15µF
MT2
1.5M
115V
AC
MAINS
100µH
2W 2 0 0 V
1N4148
12
SYNC
9
V
DD
PL10
8
13
TRIG
11
CAP
14
82
0.68µF
L S 7 3 1 4 - L S 7 3 1 5 V
SS
PL1
15
OFF
10
INCANDESCENT
LAMP LOAD
PL10
N
All Resistors 1/4W, all Capacitors 25V
unless otherwise specified.
Component Values are for use with
115VAC Mains and 2.5mA LEDs.
Use Fig. 4A or Fig. 4B
Interface Circuits
1K
PL1
OFF
10K
6.2V, 1/4W (See Note 2)
7314-033197-3
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