TD230IDT STMicroelectronics, TD230IDT Datasheet - Page 5

• Manufacturer Part Number: TD230IDT
• Description: MOSFET & Power Driver ICs
• Manufacturer: STMicroelectronics

Specifications of TD230IDT

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

AN1280 - APPLICATION NOTE
Figure 8 : Decentralized Protection
Therefore, when a fault appears on the positive
rail, the definitive shutdown of the positive NMOS
will lead to the shutdown of the negative NMOS,
but when a fault appears on the negative rail, the
definitive shutdown of the negative NMOS will
have no effect on the positive NMOS.
Several possibilities are offered to reset the whole
system when it has been led to definitive shut-
down :
3. PERFORMANCES AND EVALUATION
All the curves shown in this application note have
been realized with the TD230 Evaluation Board.
The external conditions and components were as
listed hereafter :
the card can be unplugged and plugged
back (live insertion)
the INHIBIT pin can be set to active state
during a short time (100 s typ or more) in
the case of remote control facilities
V
V
Suppliable output short circuit current = 5A
IC = TD230
MOSFET 1 = BUZ71
MOSFET 2 = BUZ71
L
C
C
C
R
R
C
BOOST
CC
CC
BOOST
TRIP1
TRIP2
S1
S2
SS1
+
-
= 68m
= 68m
= -5V
= 1nF
= 5V
= 10 F
= 10 F
= 220 H
= 100nF
The evaluation board is available and allows to
test the performances of the TD230. The layout
and schematic of this evaluation board are given
on figures 9A-9B-9C.
4. CAUTIONS
For proper use of the TD230 as a reliable protec-
tion device, a few precautions must be taken :
1. Proper bypass capacitors must be connected
as close as possible to the power pins of the
TD230 (PV
values are given in table (a).
2. The OSCGND pin must be tied to the GND pin
externally (printed board) to ensure proper
step-up converter reference. If not, the step-up
converter will not start.
3. The INHIBIT pin is a CMOS/TTL compatible in-
put which should therefore not be left unconnect-
ed. The absolute maximum rating of this input is
7V. It should be tied to the TTL compatible output
of an eventual control block, or, if it should not be
used, tied to the GND pin.
C
Positive Bypass = 4.7 F (plastic)
Negative Bypass = 4.7 F (plastic)
SS2
CC
= 1nF
, NV
CC
, GND). Some recommended
5/8