L6226QTR STMicroelectronics, L6226QTR Datasheet
L6226QTR
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L6226QTR
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L6226QTR Summary of contents
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Features ■ Operating supply voltage from ■ 2.8 A output peak current (1.4 A DC) 0.73 Ω typ. value @ ■ R DS(on) ■ Operating frequency up to 100 kHz ■ Programmable high side overcurrent detection ...
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Contents Contents 1 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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L6226Q 1 Electrical data 1.1 Absolute maximum ratings Table 1. Absolute maximum ratings Symbol Parameter V Supply voltage S Differential voltage between OUT1 , OUT2 OUT1 , OUT2 B B OCD ,OCD ...
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Electrical data 1.3 Thermal data Table 3. Thermal data Symbol R Thermal resistance junction-ambient max. th(JA) 1. Mounted on a double-layer FR4 PCB with a dissipating copper surface of 0 ground layer connected through 18 via holes ...
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L6226Q 2 Pin connection Figure 2. Pin connection (top view) Note: 1 The pins are connected to die PAD. 2 The die PAD must be connected to GND pin. Doc ID 14335 Rev 5 Pin connection 5/29 ...
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Pin connection Table 4. Pin description N° Pin Type 1, 21 GND GND 9 OUT1B Power output Bridge B output 1. Open drain 11 OCDB output 12 SENSEB Power supply 13 IN1B Logic input 14 IN2B Logic input 15 PROGCLB ...
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L6226Q 3 Electrical characteristics ° unless otherwise specified A 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 temperature J(OFF) ...
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Electrical characteristics 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 I s over threshold R Open drain ON resistance OPDR t OCD turn-on ...
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L6226Q Figure 4. Overcurrent detection timing definition Doc ID 14335 Rev 5 Electrical characteristics 9/29 ...
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Circuit description 4 Circuit description 4.1 Power stages and charge pump The L6226Q 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 ...
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L6226Q 4.2 Logic inputs Pins IN1 , IN2 , IN1 A A logic inputs. The internal structure is shown in thresholds are respectively Vthon = 1.8 V and Vthoff = 1.3 V. Pins EN and EN A connecting them respectively ...
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Circuit description 4.3 Truth table Table 7. Truth table Don't care 2. High Z = High impedance output 4.4 Non-dissipative overcurrent detection and protection An overcurrent detection circuit (OCD) is integrated. ...
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L6226Q values and its magnitude is reported in the bridge when an overcurrent has been detected depends only by C magnitude is reported also used for providing immunity to pin EN against fast transient noises. Therefore EN ...
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Circuit description Figure 10. Overcurrent protection waveforms I OUT I SOVER th(ON) V th(OFF) ON OCD OFF ON BRIDGE OFF t OCD(ON) Figure 11. Output current protection threshold versus ...
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L6226Q Figure 12. t DISABLE 100 100 10 10 Figure 13. t DELAY versus C and 220 k Ω = 220 k Ω ...
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Circuit description 4.5 Thermal protection In addition to the overcurrent detection, the L6226Q integrates a thermal protection for preventing the device destruction in case of junction over temperature. It works sensing the die temperature by means of a sensible element ...
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L6226Q 5 Application information A typical application using L6226Q is shown in application are shown in nF should be placed between the power pins (VS to improve the high frequency filtering on the power supply and reduce high frequency transients ...
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Application information Figure 14. Typical application Note: To reduce the IC thermal resistance, therefore improve the dissipation path, the NC pins can be connected to GND. 18/29 Doc ID 14335 Rev 5 L6226Q ...
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L6226Q 6 Paralleled operation The outputs of the L6226Q 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 wire ...
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Paralleled operation 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 ...
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L6226Q 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 equal ...
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Paralleled operation Figure 17. Paralleling the four half bridges 22/29 Doc ID 14335 Rev 5 L6226Q ...
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L6226Q 7 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 bridge time ● Two ...
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Thermal management 8 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 ...
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L6226Q 9 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. ECOPACK® ...
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Package mechanical data Figure 20. Package dimensions 26/29 Doc ID 14335 Rev 5 L6226Q ...
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... L6226Q 10 Order codes Table 10. Order code Order code L6226Q L6226QTR Package VFQFPN32 5x5x1.0 Doc ID 14335 Rev 5 Order codes Packaging Tube Tape and reel 27/29 ...
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Revision history 11 Revision history Table 11. Document revision history Date 18-Jan-2008 10-Jun-2008 28-Jan-2009 23-Sep-2009 30-Aug-2010 28/29 Revision 1 First release Updated: Figure 14 on page page 21 and Figure 17 on page 22 2 Added: Note 1 on page ...
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... L6226Q 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. ...