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722

SBVS016A - SEPTEMBER 1978 鈥?REVISED JANUARY 2003

DUAL ISOLATED DC/DC CONVERTER

DESCRIPTION

The 722 converts a single 5V

DC

to 16V

DC

input into a pair of

bipolar output voltages of the same value as the input

voltage. The converter is capable of providing a total output

current of 64mA at rated voltage accuracy and up to 200mA

without damage.

The two output channels are isolated from the input and from

each other. They may be connected independently, in series

for higher output voltage or in parallel for higher output

current, as a single channel isolated DC/DC converter.

Integrated circuit construction of the 722 reduces size and

cost. High isolation breakdown voltages and low leakage

currents are assured by special design and construction that

includes use of a high dielectric strength, low leakage coating

used on the internal assembly.

A self-contained 900kHz oscillator drives switching circuitry,

which is designed to eliminate the common problem of input

current spiking due to transformer saturation or crossover

switching.

FEATURES

q

DUAL ISOLATED

鹵

5V TO

鹵

16V OUTPUTS

q

HIGH BREAKDOWN VOLTAGE: 8000V Test

q

LOW LEAKAGE CURRENT:

< 1

碌

A at 240V/60Hz

q

LOW COST PER ISOLATED CHANNEL

q

SMALL SIZE: 27.9mm x 27.9mm x 7.6mm

(1.1" x 1.1" x 0.3")

APPLICATIONS

q

MEDICAL EQUIPMENT

q

INDUSTRIAL PROCESS CONTROL

q

TEST EQUIPMENT

q

DATA ACQUISITION SYSTEMS

q

NUCLEAR INSTRUMENTATION

P+ 11

V+ 20

Rectifiers

and

Filters

1

2

3

+V

O1

C

1

鈥揤

O1

E 18

Oscillator

and

Switch

Drivers

Rectifiers

and

Filters

10 +V

O2

9

8

C

2

鈥揤

O2

V鈥?16

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright 漏 2003, Texas Instruments Incorporated

www.ti.com

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