HV440
High-Voltage Ring Generator
Ordering Information
Operating Voltage
V
PP1
- V
NN1
220V
Package Options
SOW-16
HV440WG
Features
❏
220V maximum operating voltage
❏
Integrated high voltage transistors
❏
Up to 70 V
RMS
ring signal
❏
Pulse by pulse output over current protection
❏
5 REN output capability
❏
External MOSFETs enhance output rating to 20 REN
General Description
The Supertex HV440 is a monolithic integrated circuit capable of
generating up to a 70V RMS sine wave output at frequencies of
15Hz to 60Hz with a load of 5 North American RENs. Its output
rating can be enhanced to 20 North American RENs with the
addition of two Supertex MOSFETs: one N-Channel MOSFET,
the TN2524N8 and one P-Channel MOSFET, the TP2522N8.
The high voltage output P- and N-Channel transistors are con-
trolled independently by the logic inputs P
IN
and N
IN
. Connecting
the mode pin to ground will enable the device to be controlled with
a single input, N
IN
. This adds a 200ns deadband on the control
logic to avoid cross conduction on the high voltage output. A logic
high on N
IN
will turn the high voltage P-Channel on and the N-
Channel off. The high voltage outputs have pulse by pulse over
current protection set by two external sense resistors. Nominal
PWM logic input frequency is 100KHz.
Applications
❏
❏
❏
❏
❏
❏
Microcontroller or microprocessor controlled high voltage
ring generator
Set-top/Street box ring generator
Pair gain ring generator
Wireless local loops
Fiber in the loop/to the curb
Coax cable loop
Pin Configuration
V
PP1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
PP2
P
GATE
V
PSEN
HV
OUT
V
NSEN
N
GATE
V
NN2
V
NN1
Absolute Maximum Ratings
V
PP1
- V
NN1
, power supply voltage
V
PP1
, positive high voltage supply
V
PP2
, positive gate voltage supply
V
NN1
, negative high voltage supply
V
NN2
, negative gate voltage supply
V
DD
, logic supply
Storage temperature
Power dissipation
+240V
+120V
+120V
-170V
-170V
+7.5V
-65°C to +150°C
800mW
P
GND
GND
Mode
P
IN
N
IN
EN
V
DD
top view
SOW-16
12/13/01
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the
1
Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.
SUPERTEX [ Supertex, Inc ]
