IC DRVR DUAL FULL BRDG 24-PWRDIP

L6226N

Manufacturer Part NumberL6226N
DescriptionIC DRVR DUAL FULL BRDG 24-PWRDIP
ManufacturerSTMicroelectronics
TypeH Bridge
L6226N datasheet
 


Specifications of L6226N

Input TypeNon-InvertingNumber Of Outputs4
On-state Resistance730 mOhmCurrent - Output / Channel1.4A
Current - Peak Output2.8AVoltage - Supply8 V ~ 52 V
Operating Temperature-25°C ~ 125°CMounting TypeThrough Hole
Package / Case24-DIP (0.300", 7.62mm)Operating Supply Voltage8 V to 52 V
Supply Current10 mAMounting StyleThrough Hole
For Use With497-6816 - EVAL BOARD FOR L6226QLead Free Status / RoHS StatusLead free / RoHS Compliant
Other names497-5346-5
L6226N
  
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
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Page 1/31

Download datasheet (526Kb)Embed
Next
Features
Operating supply voltage from 8 to 52 V
2.8 A output peak current (1.4 A DC)
0.73 Ω typ. value @ T
R
DS(on)
Operating frequency up to 100 kHz
Programmable high side overcurrent detection
and protection
Diagnostic output
Paralleled operation
Cross conduction protection
Thermal shutdown
Undervoltage lockout
Integrated fast free wheeling diodes
Applications
Bipolar stepper motor
Dual or quad DC motor
Figure 1.
Block diagram
October 2009
DMOS dual full bridge driver
= 25 °C
J
Description
The L6226 is a DMOS dual full bridge designed
for motor control applications, realized in
MultiPower-BCD technology, which combines
isolated DMOS power transistors with CMOS and
bipolar circuits on the same chip. Available in
PowerDIP24 (20+2+2), PowerSO36 and SO24
(20+2+2) packages, the L6226 features thermal
shutdown and a non-dissipative overcurrent
detection on the high side power MOSFETs plus
a diagnostic output that can be easily used to
implement the overcurrent protection.
Doc ID 9452 Rev 4
L6226
1/31
www.st.com
31

L6226N Summary of contents

  • Page 1

    Features ■ Operating supply voltage from ■ 2.8 A output peak current (1.4 A DC) 0.73 Ω typ. value @ T ■ R DS(on) ■ Operating frequency up to 100 kHz ■ Programmable high side overcurrent ...

  • Page 2

    Contents Contents 1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 3

    L6226 1 Maximum ratings 1.1 Absolute maximum ratings Table 1. Absolute maximum ratings Symbol V Supply voltage S Differen and VS SENSE OCD , A OCD pins voltage range OCD B PROGCL , A PROGCL pins ...

  • Page 4

    Maximum ratings 1.3 Thermal data Table 3. Thermal data Symbol Maximum thermal resistance junction-pins R th-j-pins Maximum thermal resistance junction-case R th-j-case R Maximum thermal resistance junction-am th-j-amb1 R Maximum thermal resistance junction-amb th-j-amb1 R Maximum thermal resistance junction-am th-j-amb1 ...

  • Page 5

    L6226 2 Pin connections Figure 2. Pin connections 1. The slug is internally connected to pins 1,18,19 and 36 (GND pins). Table 4. Pin description Pin n. SO24/ PowerSO36 PowerDIP24 18 ...

  • Page 6

    Pin connections Table 4. Pin description (continued) Pin n. SO24/ PowerSO36 PowerDIP24 6/31 Name Type Open drain 24 OCDB output Power 25 SENSEB supply 26 IN1B Logic input ...

  • Page 7

    L6226 Table 4. Pin description (continued) Pin n. SO24/ PowerSO36 PowerDIP24 23 24 Name Type 8 ENA Logic input 9 PROGCLA R Pin Doc ID 9452 Rev 4 Pin connections Function Bridge A enable. LOW logic level switches OFF all ...

  • Page 8

    Electrical characteristics 3 Electrical characteristics ° unless otherwise specified A S Table 5. Electrical characteristics Symbol Parameter V Turn-on threshold Sth(ON) V Turn-off threshold Sth(OFF) I Quiescent supply current S T Thermal shutdown ...

  • Page 9

    L6226 Table 5. Electrical characteristics (continued) Symbol Parameter t Dead time protection dt f Charge pump frequency CP Over current detection Input supply over current detection Is over threshold ROPDR Open drain ON resistance t OCD turn-on delay time OCD(ON) ...

  • Page 10

    Electrical characteristics Figure 4. Overcurrent detection timing definition 10/31 Doc ID 9452 Rev 4 L6226 ...

  • Page 11

    L6226 4 Circuit description 4.1 Power stages and charge pump The L6226 integrates two independent Power MOS full bridges. Each Power MOS has an = 0.73 Ω (typical value @ 25 °C), with intrinsic fast freewheeling diode. Cross R DSon ...

  • Page 12

    Circuit description Figure 6. Logic inputs internal structure Figure 7. ENA and ENB pins open collector driving Figure 8. ENA and ENB pins push-pull driving Table 7. Truth table Don't care 2. High ...

  • Page 13

    L6226 4.3 Non-dissipative overcurrent detection and protection An overcurrent detection circuit (OCD) is integrated. This circuit can be used to provides protection against a short circuit to ground or between two phases of the bridge as well as a roughly ...

  • Page 14

    Circuit description Figure 9. Overcurrent protection simplified schematic Figure 10. Overcurrent protection waveforms 14/31 Doc ID 9452 Rev 4 L6226 ...

  • Page 15

    L6226 Figure 11. Output current protection threshold versus R Figure 12. t DISABLE versus C and Doc ID 9452 Rev 4 Circuit description value CL 15/31 ...

  • Page 16

    Circuit description Figure 13. t DELAY 4.4 Thermal protection In addition to the overcurrent detection, the L6226 integrates a thermal protection for preventing the device destruction in case of junction over temperature. It works sensing the die temperature by means ...

  • Page 17

    L6226 5 Application information A typical application using L6226 is shown in application are shown in 200 nF should be placed between the power pins (VS L6226 to improve the high frequency filtering on the power supply and reduce high ...

  • Page 18

    Paralleled operation 6 Paralleled operation The outputs of the L6226 can be paralleled to increase the output current capability or reduce the power dissipation in the device at a given current level. It must be noted, however, that the internal ...

  • Page 19

    L6226 Figure 15. Parallel connection for higher current To operate the device in parallel and maintain a lower over current threshold, half bridge 1 and the half bridge 2 of the bridge A can be connected in parallel and the ...

  • Page 20

    Paralleled operation Figure 16. Parallel connection with lower overcurrent threshold It is also possible to parallel the four half bridges to obtain a simple half bridge as shown in Figure 17. In this configuration the, the over current threshold is ...

  • Page 21

    L6226 Figure 17. Paralleling the four half bridges 6.1 Output current capability and IC power dissipation In Figure 18 and and the IC power dissipation using PWM current control driving two loads, for two different driving types: ● One Full ...

  • Page 22

    Paralleled operation Figure 19. IC power dissipation versus output current with two full bridges ON at the same time 22/31 Doc ID 9452 Rev 4 L6226 ...

  • Page 23

    L6226 7 Thermal management In most applications the power dissipation in the IC is the main factor that sets the maximum current that can be deliver by the device in a safe operating condition. Therefore, it has to be taken ...

  • Page 24

    Thermal management Figure 22. PowerDIP24 junction-amb. thermal resistance vs on-board copper area Figure 23. SO24 junction-ambient thermal resistance versus on-board copper area 24/31 Doc ID 9452 Rev 4 L6226 ...

  • Page 25

    L6226 8 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ...

  • Page 26

    Package mechanical data Figure 24. PowerSO36 mechanical data 26/31 Doc ID 9452 Rev 4 L6226 ...

  • Page 27

    L6226 Table 10. Powerdip 24 mechanical data Dim Figure 25. Powerdip 24 mechanical data Databook (mm.) Min Typ. 0.38 3.3 0.41 0.46 1.4 1.52 0.2 0.25 31.62 ...

  • Page 28

    Package mechanical data DIM ddd 28/31 SO-24 MECHANICAL DATA mm. MIN. TYP MAX. 2.35 2.65 0.1 0.30 0.33 0.51 0.23 0.32 15.20 15.60 7.4 7.6 1.27 10.00 10.65 0.25 ...

  • Page 29

    ... L6226 9 Ordering codes Table 11. Ordering information Order codes L6226N L6226PD L6226D Package PowerDIP24 PowerSO36 SO24 Doc ID 9452 Rev 4 Ordering codes Packing Tube 29/31 ...

  • Page 30

    Revision history 10 Revision history Table 12. Document revision history Date Sep-2003 04-Mar-2008 29-Sep-2009 21-Oct-2009 30/31 Revision 1 Initial release 2 Minor revision due to revalidation process, no content change 3 Updated Table 1 on page 3 4 Updated Figure ...

  • Page 31

    ... L6226 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...