AN2783 datasheet(7/47 Pages) STMICROELECTRONICS

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AN2783

Electrical specifications

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Electrical specifications

Table 1.

Specifications

Parameter

10 W

20 W

VIN

30 V to 60 V at 10 W output

30 V to 60 V at 20 W output

Auxiliary VIN AUXI

18 V to 60 V

Auxiliary VIN AUXII

12 V to 60 V

VOUT

3.35 V +/- 100 mV at 3 A

3.35 V +/- 100 mV at 6 A

5.05 V +/- 100 mV at 2 A

5.05 V +/- 100 mV at 4 A

Peak-to-peak output

ripple

10 mVpp

20 mVpp

Efficiency DC-DC only

83% typ at 3.3 V 3 A

86% typ at 3.3 V 6 A

87% typ at 5 V 2 A

88% typ at 5 V 4 A

Overall efficiency

78% typ at 3.3 V 3 A

81% typ at 3.3 V 6 A

81% typ at 5 V 2 A

84% typ at 5 V 4 A

Switching frequency

250 kHz typ +/- 10%

Dynamic current step

1- 3 A max at 3.3 V

1- 6 A max at 3.3 V

1- 2 A max at 5 V

1- 4 A max at 5 V

Maximum overshoot

200 mV

400 mV

Maximum overshoot

time duration

200 ms

300 ms

Maximum undershoot

200 mV

400 mV

Maximum undershoot

time duration

200 ms

300 ms

Maximum DC test

current

3.5 A at 3.3 V

6.5 A at 3.3 V

2.5 A at 5 V

4.5 A at 5 V

Minimum DC test

current

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