mlx90804 ETC-unknow, mlx90804 Datasheet - Page 9

• Manufacturer Part Number: mlx90804
• Description: Speed Regulator For Universal Motors
• Manufacturer: ETC-unknow

the maximum angle with the triac on (fired). This
happens when the triac is fired with minimum delay
from the zero cross. MIN corresponds to the
minimum time the triac is fired. This happens when
the triac is fired with maximum delay from the zero
cross.
If the IGN < MAX ,then IGN = MAX, thus firing with
max angle. If MAX < IGN, then firing is done with
IGN angle. The IGN value is compared with the
value of a down counter, which is clocked by DCLK
= 100kHz and is cleared at the beginning of every
half period of the AC line. When this counter value
gets equal to IGN a firing circuit produces an ignition
pulse GATE with a duration selected with option
DUTS[1:0].
activated. This will check whether the triac is fired
correctly and thus no additional firing pulses are
required. If there is no current flowing in the triac
additional pulses will be generated.
Options
The following table lists all mask options of the
90804 chip:
MLX902xx Name of Sensor
MLX90804 Speed regulator for universal motors
After each firing pulse the ignition detector is
Name
MULT[7:0]
FPB
SFT[1:0]
PX[3:1]
SSE[1:0]
SPE[1:0]
LD[9:0]
DWR[4:0]
UPR[4:0]
DUTS[1:0]
MULT9
MIN[9:0]
MAX[9:0]
SLIM[9:0]
SLIMA[4:0]
Description
multiplication coefficient of
Fspd
Gate of frequency meter
startup time
Proportional coefficient Kp
Integral coefficient Ki
Start speed
Preload of Integrator
SETP integrator down
SETP integrator up
duration of firing pulse
Enable retriggering
min allowed firing angle
max allowed firing angle
minimum speed limitation
maximum speed limitation
Speed regulator for universal motors
Rev Y.X
Page 9
DUTS1
0
0
1
1
Pinout
Standard package is 8-pin dual inline package.
(Known as DIP-8, PDIP-8, DIL-8 and PDIL-8)
Pin
1
2
3
4
5
6
7
8
M A I N S
G A T E
M A I N S * 2
M A X
M I N
IGN
Name
SET
SPD
TEST
SYN
TRG
VSS
VDD1
VDD
Type
Input
Input
Input
Input
Output
Supply
Supply
Output
DUTS0
0
1
0
1
22/Aug/98
Description
Speed setting input
Speed measurement
Test pin
Zero cross input
Triac driver output
Ground
Supply, high level
Reference voltage
MLX90804
Rev 1.0
Duration in us
320
80
40
20
30/Jun/00
Page 9