Replaced by PVI-N
Data Sheet No. PD 10029-G
Series PVI
Photovoltaic Isolator
5-10 Volt Output
General Description
The PVI Photovoltaic Isolator generates an electri-
cally isolated DC voltage upon receipt of a DC input
signal. The input of the PVI is a light-emitting diode
(LED) which is optically coupled to, but electrically
isolated from, the output. A GaAIAs LED is used for
high output and maximum stability. The infrared
emission from the LED energizes, by photovoltaic
action, a series connection of silicon PN junctions. A
unique alloyed junction stack which is edge-illumi-
nated is used to form the output photovoltaic genera-
tors. This novel structure produces extremely high
operating efficiency. Units are available with a single
5-volt output or dual 5-volt outputs which can be
series connected to produce 10 volts.
A PVI can serve as an isolator, a coupler and as an
isolated voltage source. As an isolator, the PVI can
serve as the key component in a solid state relay cir-
cuits. The PVI is ideally suited for driving power MOS-
FETs and IGBTs or sensitive gate SCRs to form solid
state relays.
Features
Isolated Voltage Source
MOSFET Driver
Up to 10碌A Output
Fast Response
GaAIAs LED
2500V (RMS) Isolation
8-pin DIP Package
Single or Dual Output
s
s
s
s
s
s
s
s
E
ET
L
O
BS
O
Part Identification
Part Number
PVI5050
PVI5080
PVI1050
Outputs
1
1
2
As a coupler, the PVI can sense a low-level DC sig-
nal and transmit a voltage signal to an electrically
remote circuit. As a voltage source, the PVI can
function as a 鈥楧C transformer鈥?by providing an
isolated, low-current DC source for biasing or
supplying power to low quiescent current electronic
devices.
Conventional optocouplers merely modulate the
resistance of an output device such as a transistor,
diode or resistor. Such optocouplers require a sepa-
rate voltage source to detect the presence of an
input signal. In contrast, a PVI actually transmits (and
transforms) energy across the isolation barrier and
directly generates an output voltage. This DC volt-
age, available at a 2500VAC isolation level, gives cir-
cuit designers a new and uniquely useful electronic
component.
Output
Voltage
5.0V
5.0V
5.0/10.0V
Output
Current
5碌A
8碌A
10/5碌A
1
2
3
4
5
