TPD4102K TOSHIBA Semiconductor CORPORATION, TPD4102K Datasheet - Page 10

• Manufacturer Part Number: TPD4102K
• Description: Toshiba Intelligent Power Device High Voltage Monolithic Silicon Power Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

External Parts
Handling precautions
Standard external parts are shown in the following table.
Note 1: The required bootstrap capacitance value varies according to the motor drive conditions. The IC can
Note 2: The following formula shows the detection current: I
Note 3: With the combination of Cos and R
Note 4: When using the IC, some adjustment is required in accordance with the use environment. When mounting,
Note 5: The FG pin is open drain. Note that when the FG pin is connected to a power supply with a voltage higher
Note 6: If noise is detected on the Hall signal pin, add a CR filter.
(1)
(2)
(3)
(4)
(5)
C
1
, C
Part
R
C
R
C
C
R
operate at above the V
greater than or equal to 13.5 V to keep the power dissipation small. The capacitor is biased by V
must be sufficiently derated for it.
Do not exceed a detection current of 1 A when using the IC.
intrinsic error factor is around 10%.
The PWM frequency is broadly expressed by the following formula. (In this case, the stray capacitance of
the printed circuit board needs to be considered.)
f
R
small it exceeds the current capacity of the IC internal circuits and the triangular wave distorts. Set R
at least 9 kΩ.
place as close to the base of the IC leads as possible to improve the noise elimination.
than or equal to the V
the FG pin, connect to the GND.
(recommended 0.1-μF capacitor and 1-kΩ resistor)
PWM
2
1
4
2
5
6
3
When switching the power supply to the circuit on/off, ensure that V
off). At that time, either the V
switched off as described above, the IC may be destroyed if the current regeneration route to the V
power supply is blocked when the V
still running.
The IC has a forward/reverse rotation control pin (F/R). To change the rotation direction, switch the
F/R pin after ensuring that the motor has stopped and that the V
1.1 V. If the F/R pin is switched while the motor is rotating, the following malfunctions may occur.
The IS pin connecting the current detection resistor is connected to a comparator in the IC and also
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, use care in handling the IC and guard
against surge voltage in its application environment.
The triangular wave oscillator circuit, with externally connected C
discharges minute amounts of current. Therefore, subjecting the IC to noise when mounting it on the
board may distort the triangular wave or cause malfunction. To avoid this, attach external parts to
the base of the IC leads or isolate them from any tracks or wiring that carry large current.
The PWM of this IC is controlled by the on/off state of the high-side IGBT.
REF
, C
3
A shoot-through current may flow between the upper arm and lower arm in the output stage
(IGBT) at that moment when the motor is switched.
An over current may flow into the area where the over current protection circuit cannot detect it.
= 0.65 ÷ {Cos × (R
creates the reference current of the PWM triangular wave charge/discharge circuit. If R
Recommended Value
10 V/1000 pF ± 5%
0.62 Ω ± 1% (1 W)
25 V/2.2 μF
27 kΩ ± 5%
10 V/0.1 μF
25 V/10 μF
CC
5.1 kΩ
BS
REF
, a protection circuit is triggered so that the current flows continuously. If not using
undervoltage level, however, it is recommended that the capacitor voltage be
+ 4.25 kΩ)} [Hz]
CC
REF
or the V
BB
shown in the table, the PWM frequency is around 20 kHz. The IC
Bootstrap capacitor
Current detection
PWM frequency setup
PWM frequency setup
Control power supply stability
V
FG pin pull-up resistor
REG
line is disconnected by a relay or similar while the motor is
BB
10
power supply stability
can be turned on/off first. Note that if the power supply is
Purpose
O
= V
R
÷ RIS (V
R
S
Remarks
= 0.5 V typ.)
OS
(Note 1)
(Note 2)
(Note 3)
(Note 3)
(Note 4)
(Note 4)
(Note 5)
voltage is lower than or equal to
S
and R
< VV
S
REF
OFF (all IGBT outputs
, charges and
TPD4102K
2004-07-07
REF
CC
is set too
and
REF
BB
to