Integrated Temperature

Controllers for Peltier Modules

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7

EFFICIENCY vs. TEC CURRENT

TEC CURRENT (A)

2.0

1.5

1.0

0.5

10

20

30

40

50

60

70

80

90

0

0

2.5

Ω

EFFICIENCY vs. TEC CURRENT

TEC CURRENT (A)

2.0

1.5

0.5

1.0

10

20

30

40

50

60

70

80

0

0

2.5

Ω

OUTPUT-VOLTAGE

RIPPLE WAVEFORMS

400ns/div

100mV/div

AC-COUPLED

100mV/div

AC-COUPLED

50mV/div

INPUT SUPPLY RIPPLE

200ns/div

20mV/div

AC-COUPLED

TEC CURRENT vs. CTLI VOLTAGE

20ms/div

1V/div

2A/div

-0V

-0A

ZERO-CROSSING TEC CURRENT

1ms/div

200mV/div

500mA/div

1.5V

0A

TEC CURRENT (A)

2

1

0

-1

-2

0.5

1.0

1.5

2.0

2.5

3.0

0

-3

3

TEC CURRENT vs. TEMPERATURE

TEMPERATURE (

°C)

80

60

40

20

0

-20

0.995

1.000

1.005

1.010

0.990

-40

Ω

SWITCHING FREQUENCY

vs. TEMPERATURE

494

496

498

500

502

504

506

508

492

TEMPERATURE (

°C)

80

60

40

20

0

-20

-40

Ω

Typical Operating Characteristics