STCC05-B STMicroelectronics, STCC05-B Datasheet - Page 8

• Manufacturer Part Number: STCC05-B
• Description: Home appliance control circuit
• Manufacturer: STMicroelectronics

Specifications of STCC05-B

• Wide Range Input Supply Voltage Operation: 7 to 18V
• Ambient Temperature: - 20 to 85°C

STCC05-B
Figure 8: Example of PCB layout improvement for higher immunity
■
Standards such as IEC61000-4-x evaluate the electromagnetic compatibility of appliance systems. To test
the immunity level of the STCC05 to the IEC61000-4-4 (Electrical Fast Transient Bursts), a board repre-
sentative of usual application control unit should be considered by applying the immunity design rules
defined in the previous paragraph.
IEC61000-4-4 test does not allow any measurement equipment to be connected to the tested system, as
it would corrupt the test results. That is why this board should include a remote monitoring circuit based
on optic fibers. Thus, without any electrical link with an oscilloscope, it is possible to monitor the V
age as well as the /RST or the ZVS outputs of the STCC05, during the IEC61000-4-4 test. This optical link
detects parasitic commutations of outputs as short as 60ns.
With this board, and the burst generator coupled to the mains as specified in the IEC61000-4-4 standard
(see the following principle diagram), the STCC05 has been tested successfully at 4kV.
Figure 9: IEC61000-4-4 Electrical Fast Transient
Burst general STCC05 test circuit
8/13
STCC05 ELECTROMAGNETIC COMPATIBILITY
0.5 kV to 4 kV
BURST
GENERATOR
tr : 5ns
tp : 50 ns
SMPS
MAINS
BURST COUPLER
L
PE
N
MAINS FILTER
V
PS
3
L
PE
N
SYSTEM TESTED
STCC05
V
10 cm
PS
COM
1
5VREG
Reset
STCC05
Figure 10: Test circuit schematic
MAINS
MAINS
SPEED SENSOR
SPEED SENSOR
RELAY 1
RELAY 1
VPS
VPS
RST\
V
DD
TR1
TR1
RELAY 2
RELAY 2
15V 5VA
15V 5VA
VPS
VPS
Oscilloscope
Oscilloscope
D1~D4
D1~D4
1N4002
1N4002
Rins
Rins
2.2k
2.2k
RELAY 3
RELAY 3
COMPRESSOR RELAY
COMPRESSOR RELAY
Cins
Cins
10nF
10nF
Rzv 15k
Rzv 15k
Czv
Czv
15nF
15nF
2
Optical Receiver
Optical Receiver
Cps_1
Cps_1
100uF
100uF
3
VPS
VPS
4
BUZZER
BUZZER
47uF
47uF
Rs
Rs
560
560
Cs
Cs
Cps_2
Cps_2
100nF
100nF
HFBR-0410
HFBR-0410
Optic Fiber
Optic Fiber
V
RST\
MCU
DD
V
SS
10
10
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
Vps
Vps
SYN
SYN
INs
INs
RL1
RL1
RL2
RL2
RL3
RL3
RL4
RL4
BZ1
BZ1
BZ2
BZ2
ENbz
ENbz
1
U1
U1
STCC05-B
STCC05-B
Optical Transmitter
Optical Transmitter
OUTs
OUTs
INBZ
INBZ
COM
COM
VDD
VDD
RST
RST
ZVS
ZVS
IN1
IN1
IN2
IN2
IN3
IN3
IN4
IN4
20
20
19
19
18
18
17
17
16
16
15
15
14
14
13
13
12
12
11
11
VDD
VDD
ZVS
ZVS
LS
LS
Cdd_1
Cdd_1
100uF
100uF
SW1
SW1
SW2
SW2
SW3
SW3
SW4
SW4
DD
BATTERY
BATTERY
9V5
9V5
Cdd_2
Cdd_2
100nF
100nF
VDD
VDD
RST
RST
LS
LS
ZVS
ZVS
TEST BOARD
TEST BOARD
Cup
Cup
100nF
100nF
volt-
VDD
VDD
RST
RST