BTC50010-1TAA_15 Datasheet, PDF (18/31 Pages) Infineon Technologies AG – High-Side Power Connector

BTC50010-1TAA
Functional Description
5.4
Overvoltage Protection
The BTC50010-1TAA provides Infineon^® SMART CLAMPING functionality, which suppresses over voltages by
actively clamping the overvoltage across the power stage and the load. This is achieved by controlling the clamp
voltage V_DS(CL) depending on the junction temperature T_J and the load current I_L.
5.5
Protection during Loss of Load or Loss of V_S Condition
In case of loss of V_S with charged line inductances, the maximum supply voltage has to be limited. It is
recommended to use a diode and a Z-diode (V_Z1 + V_D1 < 16V, please refer to Figure 12).
by case
Loss of Vs
V_bat
External
components D₁
according to
either A or B is _Z1
required, not
both
V_IN
A
V_D1
V_Z1
R_IN
Module
R_VS
IN
Module Ground
V_S
B
R/L cable
V_D1
D₁
V_Z1 ^Z1
Load
Ground
R/L cable
Figure 12 External Component for BTC50010-1TAA Loss of V_S Protection
In case of loss of load with charged primary power line inductances, the maximum supply voltage also has to be
limited. It is recommended to use a Z-diode (V_Z2 < 28V) or V_S clamping power switches between V_S and Module
Ground (please refer to Figure 13).
Data Sheet
Connect FET
18
1.3, 2015-02-06