TPS37B datasheet(17/33 Pages) TI

17 / 33 page

9.3.4 User-Programmable Reset Time Delay

TPS37X has adjustable reset release time delay with external capacitors. Channel timing are independent of

each other .

• A capacitor in CTR1/MR program the reset time delay of Output 1.

• A capacitor in CTR2/MR program the reset time delay of Output 2.

• No capacitor on this pins gives the fastest reset delay time indicated in the Electrical Characteristics Table .

9.3.4.1 Reset Time Delay Configuration

The time delay (t CTR) can be programmed by connecting a capacitor between CTR1 pin and GND, CTR2 for

channel 2. In this section CTRx represent either channel 1 or channel 2.

The relationship between external capacitor CCTRx_EXT and the time delay (tCTRx) is given by Equation 1.

tCTRx = 1.28 x RCTRx x CCTRx_EXT

(1)

RCTRx = is in kilo ohms (kOhms)

CCTRX_EXT = is given in microfarads (uF)

tCTRx = is in milliseconds (ms)

9.3.4.2 User-Programmable Sense Delay

TPS37X has adjustable sense release time delay with external capacitors. Channel timing are independent of

each other. Sense delay is used as a deglitcher or ignoring known transients.

• A capacitor in CTS1 program the excursion detection on sense 1.

• A capacitor in CTS2 program the excursion detection on sense 2.

• No capacitor on this pins gives the fastest detection time indicated in the Electrical Characteristics Table.

9.3.4.3 Sense Time Delay Configuration

The time delay (t CTS) can be programmed by connecting a capacitor between CTR1 pin and GND, CTS2 for

channel 2. In this section CTRx represent either channel 1 or channel 2

The relationship between external capacitor CCTSx_EXT and the time delay (tCTSx) is given by Equation 2.

tCTSx = 1.28 x RCTSx x CCTSx_EXT

(2)

RCTSx = is in kilo ohms (kOhms)

CCTSX_EXT = is given in microfarads (uF)

tCTSx = is in milliseconds (ms)

www.ti.com

TPS37B, TPS37F

SNVSBJ1 – OCTOBER 2020

Submit Document Feedback

Product Folder Links: TPS37B TPS37F

TPS37B Datasheet(PDF) 17 Page - Texas Instruments