SN6501-Q1

www.ti.com

SLLSEF3 – JUNE 2013

Transformer Driver for Isolated Power Supplies

Check for Samples: SN6501-Q1

1

FEATURES

APPLICATIONS

•

Qualified for Automotive Applications

•

Isolated Interface Power Supply for CAN, SPI,

I2C, Digital IO, Analog IO (ADC and DAC) and

•

AEC-Q100 Qualified With the Following

RS-485

Results

•

Isolated Output Supply up to 30 V

–

Device Temperature Grade 1: –40ºC to

125ºC Ambient Operating Temperature

•

Isolated Bipolar Output Supply up to ±15 V

Range

DESCRIPTION

–

Device HBM ESD Classification Level H2

The SN6501-Q1 is a monolithic oscillator/power-

–

Device CDM ESD Classification Level C4B

driver, specifically designed for small form factor,

•

Push-Pull Driver for Small Transformers

isolated

power

supplies

in

isolated

interface

•

Single 3.3 V or 5 V Supply

applications. It drives a low-profile, center-tapped

transformer primary from a 3.3 V or 5 V DC power

•

High Primary-Side Current Drive:

supply. The secondary can be wound to provide any

–

5 V Supply: 350 mA (max)

isolated voltage based on transformer turns ratio.

–

3.3 V Supply: 150 mA (max)

The SN6501-Q1 consists of an oscillator followed by

•

Low Ripple on Rectified Output Permits Small

a gate drive circuit that provides the complementary

Output Capacitors

output signals to drive the ground referenced N-

channel power switches. The internal logic ensures

•

Small 5-pin SOT23 Package

break-before-make action between the two switches.

The device is available in a small SOT23-5 package,

and is specified for operation at temperatures from

–40°C to 125°C.

Figure 1. Typical Operating Circuit

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.