DVD-S530/DV-S5550
DVD-S530/DV-S5550
39
UVLOh = 15V
UVLOl = 7.2V
DEMAG ?
2.5V
Over Current
Protection (OCP)
V(-) < 1.5V
More than 128ms?
Toff = f (Verr)
Max Toff = f (Ct)
VCO Feedback
Startup
--> protection circuitry
Internal Vcc
Internal regulator
HV
Demag
FB
Ct
Gnd
Isense
Vcc
Verr max = 3V
Verr min = 10mV
DRV
Driver
Last pulse of
demag after 4
µ
s
1/3
1V
Rf
Ri
Current comparator
Flip-Flop
250mV clamp
250mV - 1V max setpoint
Clock
R
D
Q
Verr
Internal Clamp
Over Voltage
Protection (Vcc > 41V?)
200ns L.E.B
2
NC
NC
OVP
4x10V zener
Vcc pin13
Vcc pin8
500
OVP
OVP
60mV
20k
NC
NC
1
2
3
4
5
6
9
7
8
10
11
12
13
14
HV
Demag
FB
Ct
OVP
Isense
GND
Vcc
Drive
nc
nc
nc
nc
nc
1
3
4
5
6
7
10
11
12
14
13
9
8
TY72011P2
Power Supply