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TD310N 数据表(PDF) 4 Page - STMicroelectronics

部件名 TD310N
功能描述  TRIPLE IGBT/MOS DRIVER
Download  9 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TD310N 数据表(HTML) 4 Page - STMicroelectronics

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UVLO/stbdy pin functionning modes
Due to the wide supply voltage range of the TD310, the UVLO function (Under Voltage Lock Out) is
externally adjustable by a resistor bridge.
The bridge rate can be calculated in relation with the expected UVLO protection level as follows :
VUVLO x
R1
R1
+R2 =
1.2V (where R1 is the lower resistor of the bridge)
The internal resistor sets the default UVLO value to 12V (*) and might influence the external bridge rate if
the values of the external resistors are too high.
The standby threshold value depends of the UVLO value as follows :
Vstdby
= 0.71.2 VUVLO
Both UVLO and stdby functions can be inhibited by connecting the UVLO/stdby pin to VCC
+ via a pull up
resistor (ex 150k
Ω).
The following table summarizes the functions of the TD310 :
Pin
16
9/11
5
2/3/4
15/14
/13
6
7/8/10
Configuration
UVLO/stdby
Sense+/Sense- Enabl
e
In A/B/C
Out
A/B/C
Alarm
Op.
Amp.
Consumption
Normal
1
H
+ > -
XXL
L
OK
H (1.5mA)
+< -
HIN
IN
H
LX
L
Stdby
2
L
+> -
XXL
L
HZ
L (30
µA)
+< -
H
UVLO
3
M
X
X
X
L
L
OK
H
Configuration 1 : UVLO/stdby = H
The TD310 is in a normal consumption state (1.5mA), the operational amplifier is normally functionning
and the buffer outputs are determined by the sense comparator inputs, the enable inputs and the buffer
inputs.
Configuration 2 : UVLO/stdby = L
The TD310 is in a low consumption state (standby mode 30
µA), the buffer outputs are set to low state and
the operational amplifier is in high impedance state.
Configuration 3 : UVLO/stdby = M
The VCC supply voltage is between VUVLO and Vstdby (**). The TD310 remains in a normal consumption
state and the operational amplifier is normally functionning but the buffer outputs and the alarm pin are set
to low state.
(*)
If the UVLO level remains unadjusted, it is recommended to bypass the UVLO/stdby pin with a 1nF capacitor.
(**)
If the supply voltage falls below Vstdby, the TD310 is set in standby mode (configuration 2).
TD310
4/9


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