Rainbow-electronics MAX726 Uživatelský manuál stáhnout pdf (Strana 8)

MAX724/MAX726

5A/2A Step-Down, PWM,

Switch-Mode DC-DC Regulators

8 _______________________________________________________________________________________

CONTINUOUS-CURRENT MODE (I

OUT

= 3A)

-0.5

= 3.4A

AVG

= I

OUT

= 3A

= 3.4A

AVG

= 2.1A

DISCONTINUOUS-CURRENT MODE 

OUT

= 0.16A)

VOLTAGE (TO GND)

(ALSO DIODE VOLTAGE)

5V/div

= 0.5A

SWITCH CURRENT

1A/div

INDUCTOR CURRENT

1A/div

DIODE CURRENT

1A/div

Figure 3. MAX724 Step-Down Converter Waveforms with V

= 20V, L = 50µH (all waveforms 2µs/div)

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

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Rainbow-electronics MAX726 Uživatelský manuál Strana 8