BTN7971B Datasheet, PDF (4/26 Pages) Infineon Technologies AG – High Current PN Half Bridge NovalithIC

High Current PN Half Bridge
BTN7971B
Block Diagram
2
Block Diagram
The BTN7971B is part of the NovalithIC™ family containing three separate chips in one package: One p-channel
highside MOSFET and one n-channel lowside MOSFET together with a driver IC, forming a integrated high current
half-bridge. All three chips are mounted on one common lead frame, using the chip on chip and chip by chip
technology. The power switches utilize vertical MOS technologies to ensure optimum on state resistance. Due to
the p-channel highside switch the need for a charge pump is eliminated thus minimizing EMI. Interfacing to a
microcontroller is made easy by the integrated driver IC which features logic level inputs, diagnosis with current
sense, slew rate adjustment, dead time generation and protection against overtemperature, overvoltage,
undervoltage, overcurrent and short circuit. The BTN7971B can be combined with other BTN7971B to form H-
bridge and 3-phase drive configurations.
2.1
Block Diagram
Undervolt.
detection
Overvolt.
detection
Current
Sense
Overcurr.
Detection
HS
Overtemp.
detection
IS
Gate Driver
HS
Digital Logic
LS off HS off
IN
Gate Driver
LS
INH
SR
Slewrate
Adjustment
Overcurr.
Detection
LS
Figure 1 Block Diagram
2.2
Terms
Following figure shows the terms used in this data sheet.
VS
OUT
GND
Figure 2 Terms
Data Sheet
VS
I _IN
IN
V _IN
I_INH
INH
V _INH
I_SR
SR
V_SR
I _IS
IS
V _IS
I VS , -I D(HS)
VS
VDS (HS )
O UT
I OUT , I L
V_{SD (LS )}
V _{O UT}
G ND
IGND , I D(LS)
4
Rev. 2.0, 2008-06-27