LV8136V SANYO [Sanyo Semicon Device], LV8136V Datasheet - Page 16

• Manufacturer Part Number: LV8136V
• Description: Bi-CMOS IC For Brushless Motor Drive Direct PWM Drive, Quiet Predriver IC
• Manufacturer: SANYO [Sanyo Semicon Device]

Functional Description
• Basic operation of 120-degree ⇔ 150-degree current-carrying switching
°
Example 1 : When the Hall signal has been input with the following logic
Example 2 : When the Hall signal has been input with the following logic
• CTL pin input
• The CTL pin is pulled down by 190kΩ : typ inside the IC. Caution is required when the control input voltage input is
• Bootstrap capacitor initial charging mode
At startup, this IC starts at 120-degree current-carrying. The current-carrying is switched to 150 degrees when the 3-Hall
FG frequency is 6.1Hz (typ) or above and the rising edge of the IN2 signal has been detected twice in succession.
a) Power-saving mode V CTL < V IL (1.0V : typ)
b) Standby mode V IL < V CTL < V IM (2.1V : typ)
c) Drive mode V IM < V CTL < V IH (5.4V : typ)
d) Test mode 8V < V CTL < V CTL max (design target)
subjected to resistance division, for example.
When the mode is switched from the power-saving mode to the standby mode and then to the drive mode, the IC enters
the bootstrap capacitor charging mode (UH, VH, WH pins = L UL, VL, WL pins = H 3.84ms typ) in order to charge the
bootstrap capacitor.
Concerning the Hall signal input sequence
This IC controls the motor rotation direction commands and Hall signal input sequence in order to set the lead angle. If
the motor rotation direction commands and Hall signal input sequence do not conform to what is shown on the timing
chart, the motor is driven by 120-degree current-carrying.
When the CTL pin voltage is lower than V IL (1.0V : typ), the IC enters the power-saving mode, and the following are
set :
• L IN 1 to L IN 3 and H IN 1 to H IN 3 outputs all set to low
• I CC = 0, HB pin = OFF
The power consumption of the IC can now be set to 0, and the power consumption of the Hall element connected to
the HB pin and the output block can also be set to 0.
When the CTL pin voltage is V IL < V CTL < V IM , the IC enters the standby mode. Low is output for the U IN 1 to
U IN 3 outputs and bootstrap charge pulses (2μs pulse width: design target) are output to the L IN 1 to L IN 3 outputs to
prepare for drive start.
When the CTL pin voltage is V IM < V CTL < V IH , the IC enters the drive mode, and the motor is driven at the PWM
duty ratio corresponding to V CTL . When V CTL is increased, the PWM duty ratio increases, and the maximum duty
ratio (*90% : typ) is reached at V IH .
* When the PWM oscillation frequency setting is 17kHz.
When the CTL pin voltage is 8V or higher, the IC enters the test mode, and the motor is driven at the 120-degree
current-carrying and maximum duty ratio.
IN1
IN2
IN3
When F/R pin input is high → 120-degree current-carrying
When F/R pin input is low → 150-degree current-carrying
IN1
IN2
IN3
When F/R pin input is high → 150-degree current-carrying
When F/R pin input is low → 120-degree current-carrying
H
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LV8136V
L
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L
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No.A2005-16/19