Data Sheet
55
Rev. 1.00
2017-07-31
TLE9263BQXV33
External Voltage Regulator 3
Figure 20 VCC3 in Load Sharing Configuration
8.3
External Components
Characterization is performed with the BCP52-16 from Infineon (
I
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
V
CC3
Function with and without load sharing configuration
Device
Vendor
Reference / Value
C2
Murata
10 µF/10 V GCM31CR71A106K64L
RSHUNT
-
1
Ω
(with / without LS)
T1
Infineon
BCP52-16
VCC3REF
VCC3B
VCC3SH
VS
R
SHUNT
T1
C
2
C
1
V
S
V
CC13
Vcc3
Vcc1
I
CC3
I
CC1
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