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TDA21231 Arkusz danych(PDF) 4 Page - Infineon Technologies AG

Numer części TDA21231
Szczegółowy opis  DrMOS Product Family
Download  19 Pages
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Producent  INFINEON [Infineon Technologies AG]
Strona internetowa  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

TDA21231 Arkusz danych(HTML) 4 Page - Infineon Technologies AG

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TDA21231
Data Sheet
3
Table 2
I/O Signals
Pin No.
Name
Pin Type Buffer Type Function
1
PWM
I
+3.3 V logic
PWM drive logic input
The tri-state PWM input is compatible with 3.3 V.
5
BOOT
I
Analog
Bootstrap voltage pin
Connect to BOOT capacitor
6
GH
O
Analog
High-Side Gate
Test point for High Side MOSFET gate signal
7
PHASE
I
Analog
Switch node (reference for Boot voltage)
internally connected to SW pin, connect to BOOT capacitor
16
– 23 SW
O
Analog
Switch node output
High current output switching node
27
GL
O
Analog
Low-Side Gate
Test point for Low Side MOSFET gate signal
30
PHFLT#
O
+3.3 V logic
Thermal Warning
Connect through a resistor to 3.3V. When the thermal protection
threshold is tripped, the PHFLT# pin is being pulled low. Leave
open if not used.
31
EN
I
+3.3 V logic
Enable signal (active high)
Connect to GND to disable the IC.
Table 3
Power Supply
Pin No.
Name
Pin Type Function
8 to 11, Vin pad
VIN
POWER
Input voltage
Supply of the drain of the high-side MOSFET
29
PVCC
POWER
FET gate supply voltage
High- and low-side gate drive supply
3
VCC
POWER
Logic supply voltage
Bias voltage for the internal logic
Table 4
Ground Pins
Pin No.
Name
Pin Type Function
4
AGND
GND
Control signal ground
Should be connected to PGND externally
12
– 15, 28,
PGND pads
PGND
GND
Power ground
All these pins must be connected to the power GND plane through
multiple low inductance vias.
Table 5
Not Connected
Pin No.
Name
Pin Type Function
2
NC
No internal connection
Leave pin floating or tie to noise-
free voltage of 0 (GND) … 7 V.
24, 25, 26
NC
No internal connection
Options: Leave floating, tie to GND or SW


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