TLS115D0LD datasheet(20/26 Pages) INFINEON

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TLS115D0

High Precision Voltage Tracker

Application information

Data Sheet

Rev. 1.00

2016-10-13

Application information

Note:

The following information is given as a hint for the implementation of the device only and shall not

be regarded as a description or warranty of a certain functionality, condition or quality of the device.

5.1

Application diagram

Figure 4

TLS115D0 application circuit

5.2

Selection of external components

5.2.1

Input pin

Figure 4 shows the typical input circuitry for a voltage tracking regulator. The following external components

at the input are recommended in case of possible external disturbance.

A ceramic capacitor CIN1 (100 nF to 470 nF) at the input filters high frequency disturbance imposed by the line,

such as ISO pulses 3a/b. Place CIN1 very close to the input pin of the voltage tracking regulator on the PCB.

An aluminum electrolytic capacitor CIN2 (10 µF to 470 µF) at the input smoothens high energy pulses, such as

ISO pulse 2a. Place CIN2 close to the input pin of the voltage tracking regulator on the PCB.

An accordingly sized overvoltage suppressor diode D1 suppresses high voltage beyond the maximum ratings

of the circuit components and protects the devices from damage due to overvoltage.

ADJ

OUT

GND

TLS115D0

Micro

Controller

VDD

Main

Regulator

GND

VBAT

e.g. off board

loads, sensors

VREF

I/O

CIN1

CIN2

COUT

RPG

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