L6229DTR STMicroelectronics, L6229DTR Datasheet - Page 8
![IC DRIVER 3PHASE DC MOTOR 24SOIC](/photos/6/88/68802/497-24-soic__7_5mm_width__series_sml.jpg)
L6229DTR
Manufacturer Part Number
L6229DTR
Description
IC DRIVER 3PHASE DC MOTOR 24SOIC
Manufacturer
STMicroelectronics
Type
Driverr
Datasheet
1.L6229DTR.pdf
(25 pages)
Specifications of L6229DTR
Applications
DC Motor Driver, Brushless (BLDC), 3 Phase
Number Of Outputs
1
Current - Output
2.8A
Voltage - Supply
12 V ~ 52 V
Operating Temperature
-40°C ~ 150°C
Mounting Type
Surface Mount
Package / Case
24-SOIC (7.5mm Width)
Operating Supply Voltage
8 V to 52 V
Supply Current
1.4 A
Mounting Style
SMD/SMT
For Use With
497-5491 - EVAL BOARD FOR L6229PD SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Load
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-4008-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
L6229DTR
Manufacturer:
STMicroelectronics
Quantity:
1 924
L6229
3
3.1 POWER STAGES and CHARGE PUMP
The L6229 integrates a Three-Phase Bridge, which consists of 6 Power MOSFETs connected as shown on the
Block Diagram. Each Power MOS has an R
diode. Switching patterns are generated by the PWM Current Controller and the Hall Effect Sensor Decoding
Logic (see relative paragraphs). Cross conduction protection is implemented by using a dead time (t
typical value) set by internal timing circuit between the turn off and turn on of two Power MOSFETs in one leg
of a bridge.
Pins VS
Using N-Channel Power MOS for the upper transistors in the bridge requires a gate drive voltage above the
power supply voltage. The Bootstrapped Supply (V
ternal components to realize a charge pump circuit as shown in Figure 6. The oscillator output (pin VCP) is a
square wave at 600KHz (typically) with 10V amplitude. Recommended values/part numbers for the charge
pump circuit are shown in Table 7.
Table 7. Charge Pump External Component Values.
Figure 6. Charge Pump Circuit
3.2 LOGIC INPUTS
Pins FWD/REV, BRAKE, EN, H
ture is shown in Figure 4. Typical value for turn-ON and turn-OFF thresholds are respectively V
V
Pin EN (enable) may be used to implement Overcurrent and Thermal protection by connecting it to the open collector
DIAG output If the protection and an external disable function are both desired, the appropriate connection must be
implemented. When the external signal is from an open collector output, the circuit in Figure 8 can be used . For ex-
ternal circuits that are push pull outputs the circuit in Figure 9 could be used. The resistor R
the range from 2.2KΩ to 180KΩ. Recommended values for R
information for selecting the values can be found in the Overcurrent Protection section.
8/25
th(OFF)
C
C
R
D
D
BOOT
P
P
1
2
CIRCUIT DESCRIPTION
A
= 1.3V.
and VS
B
MUST be connected together to the supply voltage (V
1
, H
VCP
2
and H
D1
R
C
P
P
D2
DS(ON)
3
VBOOT
are TTL/CMOS and µC compatible logic inputs. The internal struc-
= 0.73Ω (typical value @25°C) with intrinsic fast freewheeling
C
BOOT
BOOT
220nF
10nF
100Ω
1N4148
1N4148
) is obtained through an internal oscillator and few ex-
VS
A
EN
VS
and C
B
EN
D01IN1328
are respectively 100KΩ and 5.6nF. More
S
).
V
S
EN
should be chosen in
th(ON)
= 1.8V and
DT
= 1µs