BTC50010-1TAA_15 Datasheet, PDF (19/31 Pages) Infineon Technologies AG – High-Side Power Connector

BTC50010-1TAA
Functional Description
R/L cable
V_bat
Module
R_VS
V_S
V_Z2
by case Loss
of Load
R_IN
IN
V_IN
Module Ground
R/L
cable
Load
Ground
Figure 13 External Component for BTC50010-1TAA Loss of Load Protection
The 16V Z-diode refers to the maximum V_S(REV) voltage of the chip. The 28V Z-diode refers to the maximum supply
voltage (V_S) of the chip.
5.6
Inverse Current Capability
In case of inverse current, meaning a voltage V_OUT at the output higher than the supply voltage V_S (e.g. caused
by a load operating as a generator), a current I_L will flow from output to V_S pin via the body diode of the power
transistor (please refer to Figure 14). In case the IN pin is LOW¹⁾, the power DMOS is already activated and keeps
ON. In case, the input goes from “H” to “L”, the DMOS will be activated. Due to the limited speed of INV
comparator, the output voltage slope needs to be limited. In case the IN pin is HIGH²⁾, power DMOS will not be
switched ON automatically. Current will flow through the intrinsic body diode. This power dissipation could cause
heating effect, which has to be considered.
VBAT
V_S
Gate
driver
INOV L
c^Co^om^mpp^. .
Figure 14 BTC50010-1TAA Inverse Current Circuitry
OUT
VOUT > VS
-I_L
1) LOW means IN pin is pulled-down by external transistor or I_IN > 0
2) HIGH (H) means I_IN = 0
Data Sheet
19
Connect FET
1.3, 2015-02-06