Rainbow-electronics MAX5069 Bedienungsanleitung PDF herunterladen (Seite 7)

MAX5069

High-Frequency, Current-Mode PWM Controller

with Accurate Oscillator and Dual FET Drivers

_______________________________________________________________________________________ 7

62.0

62.9

62.8

62.7

62.6

62.5

62.4

62.3

62.2

62.1

63.0

-40 35 60-15 10 85 110

FLTINT CURRENT vs. TEMPERATURE

MAX5069 toc19

TEMPERATURE (

FLTINT CURRENT

(µA)

8.0

12.5

12.0

11.5

11.0

10.5

10.0

9.5

9.0

8.5

13.0

-40 35 60-15 10 85 110

HYST R

vs. TEMPERATURE

MAX5069 toc20

TEMPERATURE (

(Ω)

= 24V

SINKING 50mA

0.01

0.1

0.03 0.1 1 2

NDRVA SWITCHING FREQUENCY (f

SW)

vs. R

MAX5069 toc21

(MΩ)

(MHz)

NDRV SWITCHING FREQUENCY

vs. TEMPERATURE

MAX5069 toc22

TEMPERATURE (°C)

NDRV SWITCHING FREQUENCY (kHz)

1108535 6010-15

48.4

48.8

49.2

49.6

50.0

50.4

50.8

51.2

51.6

52.0

48.0

-40

= 50kHz

NDRV SWITCHING FREQUENCY

vs. TEMPERATURE

MAX5069 toc23

TEMPERATURE (°C)

NDRV SWITCHING FREQUENCY (kHz)

100

125

250-25

497

496

498

500

499

502

501

504

503

505

495

-50

= 500kHz

DEAD TIME vs. TEMPERATURE

MAX5069 toc25

TEMPERATURE (°C)

TIME (ns)

11085603510-15

-40

= 24V

= 24.9kΩ

= 100kΩ

NDRV SWITCHING FREQUENCY

vs. TEMPERATURE

MAX5069 toc24

TEMPERATURE (°C)

NDRV SWITCHING FREQUENCY (kHz)

110

3510-15

1.15

1.20

1.25

1.30

1.35

1.40

1.10

-40

= 1.25MHz

DEAD TIME vs. R

MAX5069 toc26

(kΩ)

TIME (ns)

100

120

140

160

180

200

1100

Typical Operating Characteristics (continued)

= +23.6V for MAX5069A/B at startup, then reduces to +12V, V

= +12V for the MAX5069C/D, C

= C

REG5

= 0.1µF, C

VCC

= 1µF,

= 100kΩ, NDRV_ = floating, V

= 0V, V

COMP

= floating, V

= 0V, T

= +25°C, unless otherwise noted.)

1 2 3 4 5 6 7 8 9 10 11 12 ... 18 19

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