TPD4105K Toshiba Semiconductor, TPD4105K Datasheet - Page 11

• Manufacturer Part Number: TPD4105K
• Description: High Voltage Monolithic Silicon Power IC
• Manufacturer: Toshiba Semiconductor

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External Parts
Handling precautions
Typical external parts are shown in the following table.
Note 1: The required bootstrap capacitance value varies according to the motor drive conditions. The capacitor is
Note 2: The following formula shows the detection current: I
Note 3: When using this product, adjustment is required in accordance with the use environment. When mounting,
Note 4: The DIAG pin is open drain. If the DIAG pin is not used, connect to the GND.
(1)
(2)
C
1
, C
Part
C
R
C
C
C
R
biased by V
Do not exceed a detection current of 3 A when using this product.
place as close to the base of this product leads as possible to improve the ripple and noise elimination.
５
2
1
4
6
7
2
the V
functions as a sensor pin for detecting over current. As a result, over voltage caused by a surge
voltage, for example, may destroy the circuit. Accordingly, be careful of handling the IC or of surge
voltage in its application environment.
Note that if the power supply is switched off as described above, this product may be destroyed if the
current regeneration route to the V
a relay or similar while the motor is still running.
Please control the input signal in the state to which the V
The RS pin connecting the current detection resistor is connected to a comparator in the IC and also
, C
3
BB
power supply and the V
CC
and must be sufficiently derated for it.
0.2 Ω ± 1 % (1.5 W)
25 V/1000 pF
25 V /0.1 μF
25 V/2.2 μF
25 V/10 μF
25 V/1 μF
Typical
5.1 kΩ
CC
BB
power supply are not cared about either.
V
power supply is blocked when the V
V
REG
V
DIAG pin pull-up resistor
CC
V
REG
CC
Bootstrap capacitor
11
Current detection
power supply stability
power supply stability
for surge absorber
for surge absorber
Purpose
O
= V
R
÷ R
CC
1
(For V
voltage is steady. Both of the order of
Remarks
(Note 1)
(Note 2)
(Note 3)
(Note 3)
(Note 3)
(Note 3)
(Note 4)
R
= 0.5 V )
BB
line is disconnected by
TPD4105K
2007-05-10