HV440_07 Datasheet, PDF (1/5 Pages) Supertex, Inc – High-Voltage Ring Generator

High-Voltage Ring Generator
Ordering Information
Operating Voltage
V_PP1 - V_NN1
220V
Package Options
SOW-16
HV440WG
HV440
Features
❏ 220V maximum operating voltage
❏ Integrated high voltage transistors
❏
Up to 70 V ring signal
RMS
❏ Pulse by pulse output over current protection
❏ 5 REN output capability
❏ External MOSFETs enhance output rating to 20 REN
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
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
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.
Pin Configuration
V_PP1
1
P_GND
2
GND
3
Mode 4
P_IN
5
N_IN
6
EN
7
V_DD
8
16
V_PP2
15
P_GATE
14
V_PSEN
13
HV_OUT
12
V_NSEN
11
N_GATE
10
V_NN2
9
V_NN1
Top View
SOW-16
A032105
1