E-L6219DSATR

Manufacturer Part NumberE-L6219DSATR
DescriptionStepper motor driver for automotive range
ManufacturerSTMICROELECTRONICS [STMicroelectronics]
E-L6219DSATR datasheet
 
1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
9
Page 9
10
Page 10
11
12
13
14
15
Page 1/15

Download datasheet (189Kb)Embed
Next
Features
Able to drive both windings of bipolar stepper
motor
Output current up to 750 mA each winding
Wide voltage range: 10 V to 46 V
Half-step, full-step and microstepping mode
Built-in protection diodes
Internal PWM current control
Low output saturation voltage
Designed for unstabilized motor supply voltage
Internal thermal shutdown
Description
The L6219DSA is a bipolar monolithic integrated
circuits intended to control and drive both winding
of a bipolar stepper motor or bidirectionally control
two DC motors.
The L6219DSA with a few external components
form a complete control and drive circuit for LS-
TTL or microprocessor controlled stepper motor
system. The power stage is a dual full bridge
capable of sustaining 46 V and including four
diodes for current recirculation.
Table 1.
Device summary
Order code
E-L6219DSA
E-L6219DSATR
April 2008
Stepper motor driver for automotive range
A cross conduction protection is provided to avoid
simultaneous cross conduction during switching
current direction.
An internal pulse-width-modulation (PWM)
controls the output current to 750 mA with peak
startup current up to 1 A.
Wide range of current control from 750 mA (each
bridge) is permitted by means of two logic inputs
and an external voltage reference. A phase input
to each bridge determines the load current
direction. A thermal protection circuitry disables
the outputs if the chip temperature exceeds safe
operating limits.
Package
SO24
SO24
Rev 2
L6219DSA
SO24 (20+2+2)
Packing
Tube
Tape & reel
1/15
www.st.com
1

E-L6219DSATR Summary of contents

  • Page 1

    ... The power stage is a dual full bridge capable of sustaining 46 V and including four diodes for current recirculation. Table 1. Device summary Order code E-L6219DSA E-L6219DSATR April 2008 Stepper motor driver for automotive range A cross conduction protection is provided to avoid simultaneous cross conduction during switching current direction. An internal pulse-width-modulation (PWM) controls the output current to 750 mA with peak startup current ...

  • Page 2

    ... Contents Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.1 Input logic (I0 and I1 2.2 Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.3 Current sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 Single-pulse generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.5 Output stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.6 VS, VSS, VRef . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2/15 L6219DSA ...

  • Page 3

    ... L6219DSA List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. Absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 3. Pin functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 4. Thermal data Table 5. Electrical characteristcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 6. Current levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 7. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 List of tables 3/15 ...

  • Page 4

    ... List of figures List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. SO24 pins connection (top view Figure 3. Timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 4. Principle operating sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 5. Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 6. SO24 mechanical data and package dimensions 4/15 L6219DSA ...

  • Page 5

    ... sense stg Description Supply voltage Output current (peak) Output current (continuous) Logic supply voltage Logic input voltage range Sense output voltage Junction temperature Operating temperature range Storage temperature range Block diagram Value Unit 50 V ±1 A ±0. ...

  • Page 6

    ... Ground printed circuit copper Input 0 See Input 1 (pins 9, 17) These pins and pins 8, 20 (input 0) are logic inputs which select the outputs of the comparators to set the current Input 1 level. Current also depends on the sensing resistor and reference voltage. See functional description ...

  • Page 7

    ... Logic supply Supply voltage input for logic circuitry Load supply Supply voltage input for the output stages OUT 1 A and OUT guaranteed up to 1.5 KV (human body SS Description Block diagram Description ) PDIP max. 18 (1) max. 75 off Unit ° ...

  • Page 8

    ... Test condition or OUT ) Sink driver, I Sink driver, I Source driver, I Source driver, I High stage I Low stage I Both bridges ON, no load Both bridges OFF All inputs All inputs Operating 0 load 2 load ...

  • Page 9

    ... I winding 2. The current can also be switched off completely. 2.1 Input logic (I The current level in the motor winding is selected with these inputs. (See the logic inputs is left open, the circuit will treat it has a high level input. Table 6. Current levels ...

  • Page 10

    ... Single-pulse generator The pulse generator is a monostable triggered on the positive going edge of the comparator output. The monostable output is high during the pulse time, toff, which is determined by the time components R The single pulse switches off the power feed to the motor winding, causing the winding current to decrease during t 2 ...

  • Page 11

    ... L6219DSA Internal circuitry is added in order to increase the accuracy of the motor current particularly with low current levels. 2 Ref The circuit will stand any order of turn-on or turn-off the supply voltages V dV/dt values are then assumed. Preferably, V should be tracking V Ref during power-on and power-off if V ...

  • Page 12

    ... Also, some stepper motors have such high core losses that they are not suited for switch mode current regulation. Unused inputs should be connected to proper voltage levels in order to get the highest noise immunity. As the circuit operates with switch mode current regulation, interference generation problems might arise in some applications ...

  • Page 13

    ... In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ...

  • Page 14

    ... Revision history 5 Revision history Table 7. Document revision history Date 12-Nov-1998 29-Apr-2008 14/15 Revision 1 First Issue 2 Document reformatted. L6219DSA Changes ...

  • Page 15

    ... The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America Please Read Carefully: © ...