uaa2016 ON Semiconductor, uaa2016 Datasheet - Page 3

• Manufacturer Part Number: uaa2016
• Description: Zero Voltage Switch Power Controller
• Manufacturer: ON Semiconductor

R
the following calculations.)
Triac Choice and R
has the lowest peak gate trigger current. This will limit the
output current of the UAA2016 and thus its power
consumption. Use Figure 4 to determine R
the triac maximum gate current (I
low temperature limit. For a 2.0 kW load at 220 Vrms, a good
triac choice is the ON Semiconductor MAC212A8. Its
maximum peak gate trigger current at 25°C is 50 mA.
60 W. It is assumed that: I
with T in °C, which applies to the MAC212A8.
Output Pulse Width, R
together with the load value and working conditions
(frequency and voltage):
value is:
def
(For simplicity, the LED in series with R
Depending on the power in the load, choose the triac that
For an application to work down to − 20°C, R
The pulse with T
Given the RMS AC voltage and the load power, the load
R
R
S
2
S2
R
Temp. Red.
1
P
S1
R
Sense Input
out
is determined by the triac’s I
L
R
3
= V
Hys
sync
Determination
GT
V
2
Adj
ref
(T) = I
rms/POWER
3
4
2
1
GT
11−Bit Counter
GT
(25°C)  exp (−T/125)
4−Bit DAC
Failsafe
) and the application
+
+
+
out
out
Figure 1. Application Schematic
APPLICATION INFORMATION
+
−
is omitted in
according to
out
Hold
should be
1/2
R
http://onsemi.com
Sync
, I
sync
Synchronization
Latch
UAA2016
Full Wave
Sampling
Logic
8
3
Reference
Internal
where V
the line frequency.
the higher of the values of I
V
corresponding T
R
above, use Figures 9 and 10 to determine R
that the sinking current at V
current) is less than 0.5 mA. Then use Figure 11 and 12 to
determine the filter capacitor (C
desired on supply voltage. The maximum ripple allowed is
1.0 V.
Temperature Reduction Determined by R
Supply
TM
The load current is then:
Figures 6 and 7 give the value of T
With the output current and the pulse width determined as
(Refer to Figures 13 and 14.)
= 1.6 V. Figure 8 gives the R
Amplifier
I
UAA2016
Set I
Load
Pulse
and Filter Capacitor
TM
V
R
Voltage
EE
Supply
S
is the maximum on state voltage of the triac, f is
Load
+ (Vrms
5
P
= I
.
Latch
6
7
for t = T
+V
Output
C
CC
F
2
R
Hold
ref
out
pin (including NTC bridge
P
F
and I
/2 to calculate T
sin(2pft)–V
) according to the ripple
MAC212A8
P
sync
which corresponds to
Latch
that produces the
Supply
, assuming that
1
TM
Load
) R
, assuming
P
.
L