TLE9263QX datasheet(52/164 Pages) INFINEON

52 / 164 page

Data Sheet

Rev. 1.1, 2014-09-26

TLE9263QX

External Voltage Regulator 3

Figure 20

VCC3 in Load Sharing Configuration

8.3

External Components

Characterization is performed with the BCP52-16 from Infineon (

CC3 < 200 mA) and with MJD253.

Other PNP transistors can be used. However, the functionality must be checked in the application.

Figure 20 shows one hardware set up used.

Note: The SBC is not able to ensure a thermal protection of the external PNP transistor. The power handling

capabilities for the application must therefore be chosen according to the selected PNP device, the PCB

layout and properties of the application to prevent thermal damage, e.g. via the shunt current limitation in

stand alone configuration or by selecting the proper ICC1/ICC3 ratio in load-sharing configuration.

Note: To ensure an optimum EMC behavior of the VCC3 regulator when the VCC3 output is leaving the PCB, it is

necessary to optimize the PCB layout to have the PNP very close to the SBC. If this is not sufficient or

possible, an external capacitance should be placed to the off-board connector (see also Chapter 17.1).

Table 13

Bill of Materials for the

CC3 Function with and without load sharing configuration

Device

Vendor

Reference / Value

Murata

10 µF/10 V GCM31CR71A106K64L

RSHUNT

1 Ω (with / without LS)

Infineon

BCP52-16

VCC3REF

VCC3B

VCC3SH

RSHUNT

VCC13

Vcc3

Vcc1

ICC3

ICC1

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