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 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
Fibre 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
A032105
1
SUPERTEX [ Supertex, Inc ]
