BTN7963B Datasheet, PDF (23/26 Pages) Infineon Technologies AG – High Current PN Half Bridge NovalithIC

High Current PN Half Bridge
BTN7963B
Application Information
6.3
Half-bridge Configuration Considerations
If the BTN7963B is used in a half-bridge configuration with the load connected between OUT and VS and the
supply voltage is exceeding the Overvoltage Mode ON level V_OVM(ON), the implemented “Overvoltage mode
(Smart Clamping)” feature leads to automatically turning off the low side switch.
If the load is connected between OUT and GND and the supply voltage is exceeding the Overvoltage Mode ON
level V_OVM(ON) while the high side switch is turned off and low side MOSFET is on, the low side MOSFET will be
turned off. If the voltage drop over the high side switch exceeds the high side clamp voltage -V_{DS(HS)_CL} a current
can flow through the high side switch and the load to GND.
It shall be insured that the power dissipated in the NovalithIC™ does not exceed the maximum ratings.
Microcontroller
XC866
I/O I/O
I/O
Reset
Vdd
C
Q
22µF
I/O ^Vss
C
D
47nF
Voltage Regulator
Reverse Polarity
Protection
WO _{TLE I}
RO _4278G
Q
D _GND
D
Z1
10V
C
S
470µF
R₁
10kΩ
V_S
e.g.
IPD80P03P4L
-07
R_IN
10kΩ
R
10k^INΩ^H
R_IS
1kΩ
R_SR
0..51kΩ
BTN7963B
VS
INH
IN
OUT
IS
SR
GND
C
Sc
470nF
M
High Current Half-Bridge
Figure 15 Application Example: Half-Bridge with a BTN7963B (Load to GND)
Note: This is a simplified example of an application circuit. The function must be verified in the real application.
Data Sheet
23
Rev. 1.0, 2009-09-09