L6229Q 데이터 시트보기 (PDF) - STMicroelectronics
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L6229Q Datasheet PDF : 28 Pages
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L6229Q
Pin connection
Table 5.
N°
Pin description
Pin
Type
Function
1, 21
9
11
12
13
14
15
16
17
19
20
22
23
24
25
26
27
28
29
30
31
GND
GND Ground terminals.
TACHO
Open drain Frequency-to-voltage open drain output. Every pulse from pin H1 is shaped
output as a fixed and adjustable length pulse.
RCPULSE
RC pin
RC network pin. A parallel RC network connected between this pin and
ground sets the duration of the monostable pulse used for the frequency-to-
voltage converter.
Half bridge 3 source Pin. This pin must be connected together with pin
SENSEB Power supply SENSEA to power ground through a sensing power resistor. At this pin also
the Inverting Input of the sense comparator is connected.
FWD/REV
Logic input
Selects the direction of the rotation. HIGH logic level sets forward operation,
whereas LOW logic level sets reverse operation.
If not used, it has to be connected to GND or +5 V.
Chip enable. LOW logic level switches OFF all power MOSFETs.
EN
Logic input
If not used, it has to be connected to +5 V.
VREF
Current controller reference voltage.
Logic input
Do not leave this pin open or connect to GND.
BRAKE
Brake input pin. LOW logic level switches ON all high side power MOSFETs,
Logic input implementing the brake function.
If not used, it has to be connected to +5 V.
VBOOT
Supply
voltage
Bootstrap voltage needed for driving the upper power MOSFETs.
OUT3
VSB
VSA
OUT2
VCP
Power output Output half bridge 3.
Power supply
Half bridge 3 power supply voltage. It must be connected to the supply
voltage together with pin VSA.
Power supply
Half bridge 1 and half bridge 2 power supply voltage. It must be connected to
the supply voltage together with pin VSB.
Power output Output half bridge 2.
Output Charge pump oscillator output.
H2
H3
H1
DIAG
Sensor input Single ended hall effect sensor input 2.
Sensor input Single ended hall effect sensor input 3.
Sensor input Single ended hall effect sensor input 1.
Open drain
output
Overcurrent detection and thermal protection pin. An internal open drain
transistor pulls to GND when an overcurrent on one of the high side
MOSFETs is detected or during thermal protection.
SENSEA
RCOFF
Power supply
Half bridge 1 and half bridge 2 source pin. This pin must be connected
together with pin SENSEB to power ground through a sensing power resistor.
RC pin
RC network pin. A parallel RC network connected between this pin and
ground sets the current controller OFF-Time.
OUT1 Power output Output half bridge 1.
Doc ID 15209 Rev 3
7/28
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