VOM1271T

**VOM1271** 

Vishay Semiconductors 

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www.vishay.com 

## **Photovoltaic MOSFET Driver with Integrated Fast Turn-Off, Solid-State Relay** 

## **FEATURES** 

- Open circuit voltage at IF = 10 mA, 8.4 V typical 

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1 4<br>Turn<br>Off<br>2 3<br>i179066_6<br>**----- End of picture text -----**<br>


- Short circuit current at IF = 10 mA, 15 μA typical 

- Isolation test voltage 4500 VRMS 

- Logic compatible input 

- High reliability 

- Integrated rapid turn-off circuitry 

- Material categorization: For definitions of compliance please see www.vishay.com/doc?99912 

## **APPLICATIONS** 

## **DESCRIPTION** 

The VOM1271 is a stand-alone optically isolated MOSFET driver. Unlike conventional MOSFET drivers, which require an external power supply to provide VCC and or VDD rails to the driver itself, the VOM1271 obtains all the required current   to drive its internal circuitry from the LED current on the low voltage primary side of the isolation barrier. This saves the designer the space and cost associated with providing one or more external power supplies. The VOM1271 also integrates a turn-off circuit internal to the component itself, thus doing away with the need for additional components in order to increase the overall switching speed by decreasing the turn-off time. These features, combined with a small SOP4 package, provide designers with a small footprint, highly integrated isolated gate driver solution for  a large variety of MOSFET drive applications. 

- High-side driver 

- Solid-state relays 

- Floating power supply 

- Power control 

- Data acquisition 

- ATE 

- Isolated solenoid drivers 

- Isolated high current relay drivers 

- Isolated high voltage relay drivers 

## **AGENCY APPROVALS** 

The safety application model number covering all products in this datasheet is VOM1271. This model number should be used when consulting safety agency documents. 

- UL1577 

- cUL, equivalent to CSA bulletin 5A 

- FIMKO EN 60950-1 

## **SAFETY AGENCY COMPLIANCE** 

Please see document: www.vishay.com/doc?83743 

|**ORDERING INFORMATION**|**ORDERING INFORMATION**|**ORDERING INFORMATION**||
|---|---|---|---|
||**V**<br>**O**<br>**M**<br>**1**<br>**2**<br>**7**<br>**1**<br>**T**<br>PART NUMBER<br>TAPE<br>AND<br>REEL||7.21 mm<br>SOP-4|
|**PACKAGE**||**UL, cUL, FIMKO**||
|SOP-4||VOM1271T||



## **Note** 

- For additional information on the available options refer to option information. The product is available only on tape and reel. 

Rev. 1.6, 07-Jan-14 

Document Number: 83469 

**1** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**VOM1271** 

Vishay Semiconductors 

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www.vishay.com 

|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C,unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C,unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C,unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C,unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C,unless otherwise specified)|
|---|---|---|---|---|
|**PARAMETER**|**TEST CONDITION**|**SYMBOL**|**VALUE**|**UNIT**|
|**SSR**|||||
|LED input ratings continous forward current||IF|50|mA|
|LED input ratings reverse voltage|IR ≤10 μA|VR|5|V|
|Ambient operatingtemperature range||Tamb|- 40 to + 100|°C|
|Storage temperature range||Tstg|- 40 to + 125|°C|
|Pin solderingtemperature(1)|t≤10 s max.|Tsld|260|°C|
|Isolation test voltage<br>between emitter and detector|t = 1 s|VISO|4500|VRMS|



## **Notes** 

- Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute maximum ratings for extended periods of the time can adversely affect reliability. 

- (1) Refer to reflow profile for soldering conditions for surface mounted devices (SOP). 

|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|
|---|---|---|---|---|---|---|
|**PARAMETER**|**TEST CONDITION**|**SYMBOL**|**MIN.**|**TYP.**|**MAX.**|**UNIT**|
|LED forward voltage|IF= 10 mA|VF|1.2|1.4|1.6|V|
|Open circuit voltage|IF= 5 mA|VOC||8.1||V|
||IF= 10 mA|VOC|7.8|8.4||V|
||IF= 20 mA|VOC||8.7||V|
||IF= 30 mA|VOC||8.9||V|
|Short circuit current|IF= 5 mA|ISC||7.0||μA|
||IF= 10 mA|ISC|6.0|15.0||μA|
||IF= 20 mA|ISC||30.0||μA|
||IF= 30 mA|ISC||47.0||μA|



## **Note** 

- Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of engineering evaluations. Typical values are for information only and are not part of the testing requirements. 

|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|
|---|---|---|---|---|---|---|
|**PARAMETER**|**TEST CONDITION**|**SYMBOL**|**MIN.**|**TYP.**|**MAX.**|**UNIT**|
|Turn-on time|CL= 200 pF, IF= 20 mA,<br>PW= 2 ms, duty cycle = 50 %|ton||53||μs|
|Turn-off time||toff||24||μs|



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VOM1271T<br>1 4<br>ton toff<br>200 pF 90 %<br>Turn 10 MΩ VOC, ISC<br>IF OFF<br>10 %<br>Output<br>2 3<br> Fig. 1 - ton, toff Test Circuit and Waveforms<br>**----- End of picture text -----**<br>


Rev. 1.6, 07-Jan-14 

Document Number: 83469 

**2** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**VOM1271** 

Vishay Semiconductors 

**==> picture [59 x 48] intentionally omitted <==**

www.vishay.com 

|**SAFETY AND INSULATION RATINGS**|**SAFETY AND INSULATION RATINGS**|**SAFETY AND INSULATION RATINGS**|**SAFETY AND INSULATION RATINGS**|**SAFETY AND INSULATION RATINGS**|**SAFETY AND INSULATION RATINGS**|**SAFETY AND INSULATION RATINGS**|
|---|---|---|---|---|---|---|
|**PARAMETER**|**TEST CONDITION**|**SYMBOL**|**MIN.**|**TYP.**|**MAX.**|**UNIT**|
|Climatic classification (accordingto IEC 68 part 1)|IEC 68 part 1|||40/100/21|||
|Comparative trackingindex|Insulationgroup IIIa|CTI|175||399||
|Transient overvoltage||VIOTM|||6000|V|
|Recurringpeak voltage||VIORM|||630|V|
|Package safety power||PSO|||350|mW|
|Package safety current||ISI|||150|mA|
|Package safety temperature||TSI|||175|°C|
|Creepage distance|||5|||mm|
|Clearance distance|||5|||mm|



## **TYPICAL CHARACTERISTICS** (Tamb = 25 °C, unless otherwise specified) 

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10<br>9 R L = 1 MΩ<br>8<br>7<br>6<br>RL = 500 kΩ<br>5<br>4<br>3<br>2<br>1<br>0<br>0 5 10 15 20 25 30 35 40 45 50<br>IF (mA)<br> (V)<br>F<br> vs. I<br>OC<br>V<br>**----- End of picture text -----**<br>


Fig. 2 - Output Open Circuit Voltage vs. LED Current 

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60<br>50<br>IF = 30 mA<br>40<br>30<br>20<br>IF = 10 mA<br>10<br>IF = 5 mA<br>0<br>- 40 - 20 0 20 40 60 80 100<br>Ambient Temperature (°C)<br> (μA)<br>ISC<br>**----- End of picture text -----**<br>


Fig. 3 - Output Short-Circuit Current vs. Ambient Temperature 

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12<br>11<br>10<br>9 I F  = 10 mA<br>8 I F  = 30 mA<br>7<br>6 IF = 5 mA<br>5<br>4<br>- 40 - 20 0 20 40 60 80 100<br>Ambient Temperature (°C)<br>600<br>500<br>400<br>300<br>200<br>ton<br>100<br>toff<br>0<br>0 5 10 15 20 25 30 35 40 45 50<br>IF (mA)<br> (V)<br>OC<br>V<br> (μs)<br>off<br>, t<br>ton<br>**----- End of picture text -----**<br>


Fig. 4 - Output Open Circuit Voltage vs. Ambient Temperature 

Fig. 5 - ton, toff vs. LED Current 

Rev. 1.6, 07-Jan-14 

Document Number: 83469 

**3** For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**VOM1271** 

www.vishay.com 

Vishay Semiconductors 

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2.0<br>1.8<br>1.6<br>1.4<br>1.2<br>1.0<br>0.8<br>0 °C<br>0.6<br>0.4<br>0.2<br>100 °C<br>0<br>20 21 22 23 24 25<br>VR (V)<br> (μA)<br>IR<br>**----- End of picture text -----**<br>


Fig. 6 - LED Reverse Current vs. Reverse Voltage 

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80<br>70  I F = 45 mA<br>60<br>IF = 35 mA<br>50<br>40  I F  = 25 mA<br>30<br>IF = 15 mA<br>20<br>10  I F  = 5 mA<br>0<br>0  1  2  3  4  5  6  7  8  9  10<br>VOC - Open Circuit Output Voltage (V)<br> Fig. 8 - Short Circuit Output Current vs.<br>Open Circuit Output Voltage<br> - Short Circuit Output Current (μA)<br>ISC<br>**----- End of picture text -----**<br>


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1.6<br>0 °C<br>1.5<br>25 °C<br>1.4<br>1.3 100 °C<br>1.2<br>1.1<br>1.0<br>0 5 10 15 20 25 30 35 40 45 50<br>IF (mA)<br> (V)<br>F<br>V<br>**----- End of picture text -----**<br>


Fig. 7 - LED Forward Voltage vs. LED Forward Current 

## **APPLICATION DESCRIPTION** 

Figure 8 illustrates a standard isolated MOSFET driver such as Vishay’s VO1263. Though these parts are generally capable of supplying higher output current, they lack integrated fast turn-off circuitry. Thus, if high turn-off speed is required. external circuitry needs to be provided, as illustrated in figure one. 

Figure 9 illustrates the ability to do away with external turn-off circuitry with the VOM1271, by taking advantage of the VOM1271’s integrated turn-off circuitry. 

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2 MΩ<br>+<br>Channel 1 P-channel Switch 1<br>control – JFET N-channel<br>MOSFETs<br>**----- End of picture text -----**<br>


Fig. 9 - Typical MOSFET Driver Application without Integrated Fast Turn-Off 

Rev. 1.6, 07-Jan-14 

Document Number: 83469 

**4** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**VOM1271** 

Vishay Semiconductors 

**==> picture [59 x 48] intentionally omitted <==**

www.vishay.com 

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VOM1271 4 VOM1271 4<br>1 + 1 +<br>TURN TURN<br>OFF OFF<br>2 - 3 2 - 3<br>Bidirectional MOSFET Driver Application  Single MOSFET Driver Application<br>**----- End of picture text -----**<br>


Fig. 10 - Typical MOSFET Driver Applications with Integrated Fast Turn-Off 

## **PACKAGE DIMENSIONS** in millimeters 

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## **PACKAGE MARKING** (example) 

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M1271<br>V YWW<br>68<br>Pin One Dimple<br>**----- End of picture text -----**<br>


Rev. 1.6, 07-Jan-14 

Document Number: 83469 

**5** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**VOM1271** 

Vishay Semiconductors 

**==> picture [59 x 48] intentionally omitted <==**

www.vishay.com 

## **TAPE AND REEL PACKAGING** 

Dimensions in millimeters 

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ESD sticker<br>Tape slot<br>in core<br>Regular, special<br>or bar code label<br>17999<br>**----- End of picture text -----**<br>


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330<br>(13")<br>**----- End of picture text -----**<br>


Fig. 11 - Tape and Reel Shipping Medium (EIA-481, revision A, and IEC 60286), 2000 units per reel 

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1.50 ± 0.1<br>2.00 ± 0.05 4.00 ± 0.1<br>1.75 ± 0.1<br>5.50<br>± 0.05<br>7.33 2 1<br>± 0.1 3 4<br>+ 0.3<br>12.00 - 0.1<br>8° 8.00 ± 0.1 1.50 ± 0.25<br>2.66 ± 0.1 4.72 ± 0.1<br>22646<br>**----- End of picture text -----**<br>


Fig. 12 - Tape Dimensions 

Rev. 1.6, 07-Jan-14 

Document Number: 83469 

**6** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**Legal Disclaimer Notice** Vishay 

www.vishay.com 

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## **Disclaimer** 

ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 

Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. 

Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product.  To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. 

Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical requirements that are often placed on Vishay products in generic applications.  Such statements are not binding statements about the suitability of products for a particular application.  It is the customer’s responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application.  Parameters provided in datasheets and/or specifications may vary in different applications and performance may vary over time.  All operating parameters, including typical parameters, must be validated for each customer application by the customer’s technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein. 

Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the Vishay product could result in personal injury or death. Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk.  Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. 

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay.  Product names and markings noted herein may be trademarks of their respective owners. 

## **Material Category Policy** 

**Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (EEE) - recast, unless otherwise specified as non-compliant.** 

**Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.** 

**Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free requirements as per JEDEC JS709A standards.  Please note that some Vishay documentation may still make reference to the IEC 61249-2-21 definition.  We confirm that all the products identified as being compliant to IEC 61249-2-21 conform to JEDEC JS709A standards.** 

Revision: 02-Oct-12 

Document Number: 91000 

**1**