HV9105 Supertex Inc, HV9105 Datasheet - Page 4

• Manufacturer Part Number: HV9105
• Description: High-Voltage Switchmode Controllers with MOSFET
• Manufacturer: Supertex Inc

Switching Waveforms
Functional Block Diagram
Shutdown
Drain
Source
Reset
1.5V
V
DD
0
0
V
V
+V
DD
DD
BIAS
V
V
0
0
DD
REF
IN
50%
6 (9)
2 (3)
1 (2)
10 (14)
Pre-regulator/Startup
50%
(20)
14
Sources
t
Current
d
GEN
REF
FB
–
+
Error
Amplifier
+
Pin numbers in parentheses are for PLCC package.
–
90%
4V
t
R
≤ 10ns
Internal
Circuits
8.6V
COMP
To
50%
8.1V
(18)
13
2V
1.2V
t
Discharge
SW
(12)
–
+
+
–
9
–
+
t
LW
Current-mode
Undervoltage
Comparator
Comparator
Comparator
C/L
4
(11)
8
OSC
In
OSC
SHUTDOWN
50%
OSC
Out
R
S
(10)
7
Drain
50%
Q
V
V
DD
DD
0
0
Q
9108
V
S
R
t
T
RW
DD
50%
V
DD
Q
50%
9105
t
(16) 11
(17) 12
SD
(7) 4
(5) 3
(8) 5
90%
Drain
-V
Source
Shutdown
Reset
IN
t
R
, t
t
F
F
HV9105/HV9108
≤ 10ns
≤ 10ns