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PDF L6229PDTR Data sheet ( Hoja de datos )

Número de pieza L6229PDTR
Descripción DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR
Fabricantes STMicroelectronics 
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No Preview Available ! L6229PDTR Hoja de datos, Descripción, Manual

L6229
DMOS DRIVER FOR
THREE-PHASE BRUSHLESS DC MOTOR
1 FEATURES
OPERATING SUPPLY VOLTAGE FROM 8 TO
52V
2.8A OUTPUT PEAK CURRENT (1.4A DC)
RDS(ON) 0.73TYP. VALUE @ Tj = 25 °C
OPERATING FREQUENCY UP TO 100KHz
NON DISSIPATIVE OVERCURRENT
DETECTION AND PROTECTION
DIAGNOSTIC OUTPUT
CONSTANT tOFF PWM CURRENT
CONTROLLER
SLOW DECAY SYNCHR. RECTIFICATION
60° & 120° HALL EFFECT DECODING LOGIC
BRAKE FUNCTION
TACHO OUTPUT FOR SPEED LOOP
CROSS CONDUCTION PROTECTION
THERMAL SHUTDOWN
UNDERVOLTAGE LOCKOUT
INTEGRATED FAST FREEWEELING DIODES
2 DESCRIPTION
The L6229 is a DMOS Fully Integrated Three-Phase
Motor Driver with Overcurrent Protection.
Realized in MultiPower-BCD technology, the device
combines isolated DMOS Power Transistors with
CMOS and bipolar circuits on the same chip.
The device includes all the circuitry needed to drive a
three-phase BLDC motor including: a three-phase
DMOS Bridge, a constant off time PWM Current Con-
troller and the decoding logic for single ended hall
sensors that generates the required sequence for the
power stage.
Available in PowerDIP24 (20+2+2), PowerSO36 and
SO24 (20+2+2) packages, the L6229 features a non-
Figure 1. Package
PowerDIP24
(20+2+2)
PowerSO36
SO24
(20+2+2)
Table 1. Order Codes
Part Number
Package
L6229N
L6229PD
L6229PDTR
PowerDIP24
PowerSO36
PowerSO36 in Tape & Reel
L6229D
SO24
L6229DTR
SO24 in Tape & Reel
dissipative overcurrent protection on the high side
Power MOSFETs and thermal shutdown.
October 2004
Rev. 3
1/25

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L6229PDTR pdf
L6229
Table 5. Pin Description (continued)
PACKAGE
SO24/
PowerDIP24
PowerSO36
PIN #
PIN #
10 25
11 26
12 27
13 28
14 29
15 30
16 32
17 33
20 4
21 5
22 7
23 8
24 9
Name
Type
Function
SENSEB
FWD/REV
EN
VREF
BRAKE
VBOOT
OUT3
VSB
VSA
OUT2
VCP
H2
H3
Power Supply
Half Bridge 3 Source Pin. This pin must be connected
together with pin SENSEA to Power Ground through a
sensing power resistor. At this pin also the Inverting
Input of the Sense Comparator is connected.
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 +5V..
Logic Input
Chip Enable. LOW logic level switches OFF all Power
MOSFETs.
If not used, it has to be connected to +5V.
Logic Input Current Controller Reference Voltage.
Do not leave this pin open or connect to GND.
Logic Input
Brake Input pin. LOW logic level switches ON all High
Side Power MOSFETs, implementing the Brake
Function.
If not used, it has to be connected to +5V.
Supply Voltage Bootstrap Voltage needed for driving the upper Power
MOSFETs.
Power Output Output 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 2.
Output Charge Pump Oscillator Output.
Sensor Input Single Ended Hall Effect Sensor Input 2.
Sensor Input Single Ended Hall Effect Sensor Input 3.
Table 6. Electrical Characteristics
(VS = 48V , Tamb = 25 °C , unless otherwise specified)
Symbol
Parameter
Test Conditions
VSth(ON) Turn ON threshold
VSth(OFF) Turn OFF threshold
IS Quiescent Supply Current
All Bridges OFF;
Tj = -25 to 125°C (6)
TJ(OFF) Thermal Shutdown Temperature
Output DMOS Transistors
RDS(ON) High-Side + Low-Side Switch ON
Resistance
Tj = 25 °C
Tj =125 °C (7)
IDSS Leakage Current
EN = Low; OUT = VCC
EN = Low; OUT = GND
Min Typ Max Unit
5.8 6.3 6.8
V
5 5.5 6
V
5 10 mA
165 °C
1.47
2.35
1.69
2.70
2 mA
-0.3 mA
5/25

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L6229PDTR arduino
L6229
Figure 12 shows the magnitude of the Off Time tOFF versus COFF and ROFF values. It can be approximately
calculated from the equations:
tRCFALL = 0.6 · ROFF · COFF
tOFF = tRCFALL + tDT = 0.6 · ROFF · COFF + tDT
where ROFF and COFF are the external component values and tDT is the internally generated Dead Time with:
20KΩ ≤ ROFF 100K
0.47nF COFF 100nF
tDT = 1µs (typical value)
Therefore:
tOFF(MIN) = 6.6µs
tOFF(MAX) = 6ms
These values allow a sufficient range of tOFF to implement the drive circuit for most motors.
The capacitor value chosen for COFF also affects the Rise Time tRCRISE of the voltage at the pin RCOFF. The
Rise Time tRCRISE will only be an issue if the capacitor is not completely charged before the next time the
monostable is triggered. Therefore, the On Time tON, which depends by motors and supply parameters, has to
be bigger than tRCRISE for allowing a good current regulation by the PWM stage. Furthermore, the On Time tON
can not be smaller than the minimum on time tON(MIN).
tON > tON(MIN) = 2.5µs (typ. value)
tON
>
tRCRISE
tDT
tRCRISE = 600 · COFF
Figure 13 shows the lower limit for the On Time tON for having a good PWM current regulation capacity. It has
to be said that tON is always bigger than tON(MIN) because the device imposes this condition, but it can be smaller
than tRCRISE - tDT. In this last case the device continues to work but the Off Time tOFF is not more constant.
So, small COFF value gives more flexibility for the applications (allows smaller On Time and, therefore, higher
switching frequency), but, the smaller is the value for COFF, the more influential will be the noises on the circuit
performance.
Figure 12. tOFF versus COFF and ROFF.
1 .104
1 .103
100
Roff = 100k
Roff = 47k
Roff = 20k
10
1
0.1
1 10
Coff [nF]
100
11/25

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