SIP32430 datasheet(13/17 Pages) VISHAY

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SiP32430

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Vishay Siliconix

S20-0528-Rev. B, 06-Jul-2020

Document Number: 65223

For technical questions, contact: powerictechsupport@vishay.com

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DETAILED DESCRIPTION

Over Current Limit

When an over-current event occurs, the SiP32430 will limit

the current immediately. If the event exceeds 7 ms, the

SiP32430 will turn off the switch. The FLG pin is pulled low

upon the switch off. The SiP32430 will auto restart 150 ms

after the switch off and the recovery from over temperature.

The SiP32430 current limit is set an external resistor

between the ILIM pin and GND. RSET can be selected per the

following table and curve.

Fig. 47 - Current Limit vs. RSET



The current limit trigger level is typically 8 % over the current

limit setting current.



Soft Start

The soft start time can be calculated by the following

formula:

Where:



t is the soft start time

V

OUT is the output voltage range

ISS is the built-in current source charging the soft start

capacitor CSS. ISS value is 5 μA typical.

CSS is the soft start time setting capacitor.

RSET is the current limit setting resistor.

ROUT is the output load.

Enable

The device is logic high enable. This can be accomplished

by applying a logic high signal to the EN pin. Alternatively

this pin can be hardwired through a resistor divider to the

VIN, thus keeping the switch permanently ON as long as the

supply is present.



FLG

The FLG is an open drain output and will be pulled low under

over temperature or over current conditions.



The PG is an open drain output that will be pulled low when

output voltage reaches 90 % of the VIN.

RSET SELECTION TABLE

RSET

)

CURRENT LIMIT (A)

(SETTLING)

TOL.

(%)

CURRENT LIMIT

TRIGGER POINT

(A)

MIN.

TYP.

MAX.

TYP.

4.22

0.81

1.01

1.21

1.12

5.36

0.65

0.81

0.97

0.87

7.15

0.49

0.61

0.73

0.66

10.2

0.33

0.42

0.50

0.46

0.28

0.35

0.42

0.38

13.3

0.25

0.31

0.37

0.35

18.7

0.17

0.21

0.26

0.25

24.3

0.11

0.16

0.21

0.19

ISS

CSS

ROUT x 3300

RSET

ΔV

OUT

Δt

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