TPS26613 datasheet(32/45 Pages) TI

32 / 45 page

VIN = 24 V, COUT = 1 mF

Figure 9-12. TPS26612: Startup of 2-Wire

transmitter with MODE = GND, IOUT = 30 mA

VIN = 24 V, COUT = 1 mF

Figure 9-13. TPS26612: Startup of 2-Wire

transmitter with MODE = Open, IOUT = 60 mA

During the first overload fault, if the junction temperature reaches TSD, the device turns off the internal FETs and

turns on as the junction temperature goes below [TTSD – TTSDHyst].

9.4.2 Protection of 3-Wire Transmitters and Analog Output Modules With TPS26611, TPS26612

OUT

-Vs

+Vs

GND

MODE

SGOOD

TPS26611/12

ANALOG OUTPUT MODULE or 3-Wire Transmitter

24VIN

D1*

TVS3301

or Similar

GND

OUT

Sense

DAC

Output

DAC

Amplifier

+Vs

-Vs

Diode (D1) is required for Signal line Surge (IEC61000-4-5) protection.

Figure 9-14. Analog Output Protection with TPS26611 or TPS26612

TPS26611 or TPS26612 can be used for protection of the analog output a 3/4-wire transmitter and analog output

module against any high voltage field miswiring as shown in Figure 9-14. The OUT pin voltage is monitored

with respect to the +Vs/–Vs supply voltages. If the OUT voltage goes outside the +Vs/–Vs supply rails, the

FETs cutoff current conduction path and protects the whole system.The voltage at OUT pin of TPS2661x can be

sensed by DAC amplifier to compensate for RON of TPS2661x

TPS2661

SLVSFE3C – NOVEMBER 2020 – REVISED DECEMBER 2021

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TPS26613 Datasheet(PDF) 32 Page - Texas Instruments

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