DataSheet.es    


PDF L6228Q Data sheet ( Hoja de datos )

Número de pieza L6228Q
Descripción DMOS driver
Fabricantes STMicroelectronics 
Logotipo STMicroelectronics Logotipo



Hay una vista previa y un enlace de descarga de L6228Q (archivo pdf) en la parte inferior de esta página.


Total 32 Páginas

No Preview Available ! L6228Q Hoja de datos, Descripción, Manual

L6228Q
DMOS driver for bipolar stepper motor
Features
Operating supply voltage from 8 to 52 V
www.DataSheet4U.com2.8A output peak current (1.4 A RMS)
RDS(ON) 0.73 typ. value @ TJ = 25 °C
Operating frequency up to 100 kHz
Non dissipative overcurrent protection
Dual independent constant tOFF PWM
current controllers
Fast/slow decay mode selection
Fast decay quasi-synchronous rectification
Decoding logic for stepper motor full and half
step drive
Cross conduction protection
Thermal shutdown
Under voltage lockout
Integrated fast free wheeling diodes
Applications
Bipolar stepper motor
Figure 1. Block diagram
VFQFPN 5x5 32L
Description
The L6228Q is a DMOS fully integrated stepper
motor driver with non-dissipative overcurrent
protection, realized in multipower-BCD
technology, which combines isolated DMOS
power transistors with CMOS and bipolar circuits
on the same chip. The device includes all the
circuitry needed to drive a two-phase bipolar
stepper motor including: a dual DMOS full bridge,
the constant off time PWM current controller that
performs the chopping regulation and the phase
sequence generator, that generates the stepping
sequence. Available in VFQFPN-32 5x5 package,
the L6228Q features a non-dissipative
overcurrent protection on the high side Power
MOSFETs and thermal shutdown.
VBOOT
VCP
EN
CONTROL
HALF/FULL
CLOCK
RESET
CW/CCW
VBOOT
CHARGE
PUMP
THERMAL
PROTECTION
OCDA
OCDB
STEPPING
SEQUENCE
GENERATION
January 2008
VOLTAGE
REGULATOR
10V 5V
VBOOT
VBOOT
VSA
OVER
CURRENT
DETECTION
GATE
LOGIC
10V
ONE SHOT
MONOSTABLE
OVER
CURRENT
DETECTION
GATE
LOGIC
Rev 1
OUT1A
OUT2A
10V
PWM
MASKING
TIME
+
SENSE
-
COMPARATOR
BRIDGE A
BRIDGE B
D01IN1225
SENSEA
VREFA
RCA
VSB
OUT1B
OUT2B
SENSEB
VREFB
RCB
1/32
www.st.com
32

1 page




L6228Q pdf
L6228Q
2 Pin connection
Figure 2. Pin connection (top view)
www.DataSheet4U.com
Pin connection
Note: 1 The pins 2 to 8 are connected to die PAD.
2 The die PAD must be connected to GND pin.
5/32

5 Page





L6228Q arduino
L6228Q
4 Circuit description
Circuit description
4.1
www.DataSheet4U.com
Power stages and charge pump
The L6228Q integrates two independent Power MOS Full Bridges. Each Power MOS has an
RDS(ON) = 0.73 (typical value @ 25 °C), with intrinsic fast freewheeling diode. Switching
patterns are generated by the PWM Current Controller and the Phase Sequence Generator
(see below). Cross conduction protection is achieved using a dead time (tDT = 1 µs typical
value) between the switch off and switch on of two Power MOSFETs in one leg of a bridge.
Pins VSA and VSB must be connected together to the supply voltage VS. The device
operates with a supply voltage in the range from 8 V to 52 V. It has to be noticed that the
RDS(ON) increases of some percents when the supply voltage is in the range from 8 V to 12 V.
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 voltage VBOOT is obtained
through an internal Oscillator and few external components to realize a charge pump circuit
as shown in Figure 8. The oscillator output (VCP) is a square wave at 600 kHz (typical) with
10V amplitude. Recommended values/part numbers for the charge pump circuit are shown
in Table 6.
Table 6.
Charge pump external components values
CBOOT
CP
RP
D1
D2
220 nF
10 nF
100
1N4148
1N4148
Figure 8. Charge pump circuit
D1
D2
CBOOT
VS
RP
CP
VCP VBOOT
VSA VSB D01IN1328
11/32

11 Page







PáginasTotal 32 Páginas
PDF Descargar[ Datasheet L6228Q.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
L6228DMOS DRIVER FOR BIPOLAR STEPPER MOTORSTMicroelectronics
STMicroelectronics
L6228DDMOS DRIVER FOR BIPOLAR STEPPER MOTORSTMicroelectronics
STMicroelectronics
L6228NDMOS DRIVER FOR BIPOLAR STEPPER MOTORSTMicroelectronics
STMicroelectronics
L6228PDDMOS DRIVER FOR BIPOLAR STEPPER MOTORSTMicroelectronics
STMicroelectronics

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar