Rainbow-electronics MAX13256 Bedienungsanleitung PDF herunterladen (Seite 5)

�� Maxim Integrated Products 5

MAX13256

36V H-Bridge Transformer

Driver for Isolated Supplies

Typical Operating Characteristics

(V

DD

= 24V, T

A

= +25NC, unless otherwise noted.)

SUPPLY CURRENT

vs. EXTERNAL CLOCK FREQUENCY

MAX13256 toc01

EXTERNAL CLOCK FREQUENCY (kHz)

I

DD

(mA)

170014001100800500

1

2

3

4

5

6

7

8

9

10

0

200 2000

NO LOAD

NORMALIZED CURRENT-LIMIT

THRESHOLD vs. TEMPERATURE

I

LIM

0.92

0.94

0.96

0.98

1.02

1.04

1.06

1.08

1.10

0.90

MAX13256 toc04

1.00

1109580655035205-10-25-40 125

T

A

(°C)

ST1/ST2 SWITCHING FREQUENCY

vs. TEMPERATURE

MAX13256 toc02

T

A

(°C)

f

SW

(kHz)

1109580655035205-10-25

400

350

450

500

550

600

300

-40 125

CLK = GND

ST1/ST2 OUTPUT-VOLTAGE LOW

vs. SINK CURRENT

MAX13256 toc05

V

OL

(mV)

600

500

400

300

200

100

0

I

SINK

(mA)

100 200 300 400 500 600 7000 800

CURRENT-LIMIT THRESHOLD

vs. R

LIM

MAX13256 toc03

R

LIM

(I)

I

LIM

(mA)

2600220018001400

200

300

400

500

600

700

100

1000 3000

ST1/ST2 OUTPUT-VOLTAGE HIGH

vs. SOURCE CURRENT

MAX13256 toc06

I

SOURCE

(mA)

V

OH

(V)

700600400 500200 300100

23.2

23.3

23.4

23.5

23.6

23.7

23.8

23.9

24.0

24.1

23.1

0 800

MAX13256 toc07

V

OL

(mV)

50

100

150

200

250

300

350

400

0

I

SINK

(mA)

86420 10

FAULT OUTPUT-VOLTAGE LOW

vs. SINK CURRENT

ISOLATED OUTPUT VOLTAGE

vs. LOAD CURRENT

MAX13256 toc08

I

LOAD

(mA)

4003002001000 500

V

OUT

(V)

21

22

23

24

25

26

27

28

29

30

20

V

DD

= 24V

1:1 TRANSFORMER

FULL-WAVE RECTIFIER

NO SNUBBER

1 2 3 4 5 6 7 8 9 10 ... 16 17

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