MP4012 ─ HIGH-VOLTAGE, HIGH-CURRENT ACCURACY WLED CONTROLLER

MP4012 Rev. 1.12

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12

10/12/2013

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The hiccup time of Over Current Protection (Figure

3) can be approximately calculated as:

COMP

hiccup

C

Z

9V-V

t(C

C )

5A

≈

+

μ

condition is detected.

The hiccup time of Over Voltage Protection (Figure

4) can be approximately calculated as:

delay

OVP1

OVP2

O

t0.1 (R

R

) C

≈

×+

×

COMP

hiccup1

C

Z

9V-V

t(C

C )

5A

≈

+

μ

hiccup2

C

Z

8V

t(C

C )

5A

≈

+

μ