HV9112 Supertex, Inc., HV9112 Datasheet - Page 4

• Manufacturer Part Number: HV9112
• Description: High-voltage Current-mode Pwm Controller
• Manufacturer: Supertex, Inc.

Truth Table
Shutdown Timing Waveforms
Functional Block Diagram
Shutdown
L → H
H
H
L
L
Shutdown
Output
Sense
Reset
+VIN
VREF
1.5V
BIAS
V
VDD
DD
0
0
V
V
DD
DD
0
0
10 (14)
1 (20)
6 (9)
2 (3)
50%
Pre-regulator/Startup
(19)
H → L
Reset
14
Current
Sources
50%
GEN
REF
FB
H
H
L
L
t
d
–
+
Error
Amplifier
+
–
4V
Internal
Circuits
90%
(18)
8.6V
t
13
COMP
To
R
≤ 10ns
8.1V
Output
Normal operation
Normal operation, no change
Off, not latched
Off, latched
Off, latched, no change
2V
1.2V
50%
Discharge
(12)
–
+
+
–
9
–
+
t
SW
Undervoltage
Comparator
Current Limit
t
Comparator
Comparator
LW
Modulator
OSC
8 (11)
4
IN
OSC
OSC
OUT
R
S
7 (10)
50%
Shutdown
Q
Output
50%
Q
V
V
S
R
DD
DD
T
0
0
t
VDD
Q
RW
50%
11 (16)
12 (17)
3 (5)
50%
t
SD
To VDD
Current Sense
Shutdown
Reset
5 (8)
90%
4 (6)
-VIN
Output
t
R
, t
t
F
F
≤ 10ns
≤ 10ns
HV9112