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SN6501

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Low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies

Data sheet
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Low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies

SN6501

ACTIVE
Data sheet Order now

Product details

Parameters

Rating Catalog Output current (A) 0.35 Vin (Min) (V) 3 Vin (Max) (V) 5.5 Soft start No Operating temperature range (C) -40 to 125 Iout (Max) (A) 0.5 Switching frequency (Min) (kHz) 300 Switching frequency (Max) (kHz) 620 Vout (Max) (V) 11 Switch current limit (Typ) (A) 0.5 Vout (Min) (V) 0 open-in-new Find other Transformer drivers

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Transformer drivers

Features

  • Push-pull driver for small transformers
  • Single 3.3-V or 5-V supply
  • High primary-side current drive:
    • 5-V Supply: 350 mA (Max)
    • 3.3-V Supply: 150 mA (Max)
  • Low ripple on rectified output permits small output capacitors
  • Small 5-Pin SOT-23 Package
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Description

The SN6501 is a monolithic oscillator/power-driver, specifically designed for small form factor, isolated power supplies in isolated interface applications. The device drives a low-profile, center-tapped transformer primary from a 3.3-V or 5-V DC power supply. The secondary can be wound to provide any isolated voltage based on transformer turns ratio.

The SN6501 consists of an oscillator followed by a gate drive circuit that provides the complementary output signals to drive the ground referenced N-channel power switches. The internal logic ensures break-before-make action between the two switches.

The SN6501 is available in a small SOT-23 (5) package, and is specified for operation at temperatures from –40°C to 125°C.

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Technical documentation

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Type Title Date
* Data sheet SN6501 Transformer Driver for Isolated Power Supplies datasheet (Rev. I) Sep. 02, 2020
Application note How to Isolate Signal and Power for an RS-485 System (Rev. C) May 25, 2021
Application note How to Isolate Signal and Power in Isolated CAN Systems (Rev. C) May 25, 2021
Application note How to Isolate Signal and Power for I2C (Rev. B) May 19, 2021
Application note Isolated RS-485 Transceiver Reference Design May 10, 2019
Technical article Top 6 design questions about I2C isolators Mar. 13, 2019
Technical article Top 9 design questions about digital isolators Feb. 04, 2019
Technical article Now that you have isolated your CAN signals, what about power? Jan. 09, 2019
Application note Signal and Power Isolation with 3.3 V / 5 V Input and 12 V / 15 V Output Oct. 17, 2018
Application note Isolated CAN solution by using ISO1050 and SN6501 (Rev. A) Aug. 03, 2018
Technical article Top 7 design questions about isolated RS-485 transceivers Jul. 26, 2018
User guide AMC1311EVM User's Guide Nov. 13, 2017
User guide SN6501 Multi-Transformer EVM User's Guide Nov. 12, 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description

The AMC1300 evaluation module (EVM) is a platform for evaluating the AMC1300, which is a 7-kV reinforced isolation amplifier designed for use in current shunt measuring applications. AMC1300EVM allows the user to explore all the features of the AMC1300.

Features
  • Reinforced isolation amplifier: 7-kV peak, 10-kV surge
  • Fixed gain of 8.2
  • ±250-mV input range
  • Low gain error and drift
  • Extended industrial temperature range
View details
EVALUATION BOARD Download
document-generic User guide
49
Description

The AMC1302 evaluation module (EVM) is a platform for evaluating the AMC1302, which is a 7-kV reinforced isolation amplifier designed for use in current shunt measuring applications. AMC1302EVM allows the user to explore all the features of the AMC1302 device.

Features
  • Reinforced isolation amplifier: 7-kV peak, 10-kV surge
  • Fixed gain of 41
  • ±50-mV input range
  • Low gain error and drift
  • Extended industrial temperature range
View details
EVALUATION BOARD Download
document-generic User guide
49
Description
The AMC1303 devices are 1-bit modulators with an output buffer separated from the input interface circuitry by a silicon dioxide (SiO2) isolation barrier. The isolation barrier provides galvanic isolation of up to 8000 VPEAK. When used in combination with an FPGA or other digital filter, AMC1303 (...)
Features
  • Full-featured evaluation board for the AMC1303 single-channel delta-sigma modulators
  • Configurable AVDD and DVDD power supplies
  • Screw terminals for easy access to analog inputs and digital outputs
View details
EVALUATION BOARD Download
document-generic User guide
49
Description
The AMC1306 devices are 1-bit modulators with an output buffer separated from the input interface circuitry by a silicon dioxide (SiO2) isolation barrier. The isolation barrier provides galvanic isolation of up to 8000 VPEAK. When used in combination with an FPGA or other digital filter, AMC1306 (...)
Features
  • Full-featured evaluation board for the AMC1306 single-channel delta-sigma modulators
  • Configurable AVDD and DVDD power supplies
  • Screw terminals for easy access to analog inputs and digital outputs
View details
EVALUATION BOARD Download
document-generic User guide
49
Description

The AMC1311 device is a high-voltage isolation amplifier with a differential output separated from the input interface circuitry by a silicon dioxide (SiO2) isolation barrier. The isolation barrier provides galvanic isolation of up to 7000 VPEAK.  When used in combination with TLV6001, the (...)

Features
  • Full-featured evaluation board for AMC1311 single-channel isolation amplifier
  • Single-ended output option
  • Screw terminals for easy access to analog inputs and outputs
  • Configurable AVDD and DVDD power supplies
View details
EVALUATION BOARD Download
document-generic User guide
49
Description

The AMC1336 evaluation module (EVM) is a platform for evaluating the AMC1336 device, which is a reinforced isolated delta-sigma modulator for voltage sensing. AMC1336 is a 1-bit modulator with an output buffer separated from the input interface circuitry by a silicon dioxide (SiO2 (...)

Features
  • Full-featured evaluation board for AMC1336 single-channel delta-sigma modulator
  • Configurable AVDD and DVDD power supplies
  • Screw terminals for easy access to analog inputs and digital outputs
View details
EVALUATION BOARD Download
document-generic User guide
49
Description

The ISO224 evaluation module (EVM) is an evaluation platform for ISO224, which is a 7-kV reinforced isolation amplifier designed for use in voltage-measuring applications. ISO224EVM allows the user to explore all the features of the ISO224 device. ISO224EVM also features a bipolar and (...)

Features
  • Reinforced isolation amplifier: 7-kV peak, 10-kV surge
  • Fixed gain of 0.25
  • ±12-V input range
  • Low gain error and drift
  • Extended industrial temperature range
View details
EVALUATION BOARD Download
document-generic User guide
49
Description

The SN6501-Multi-Xfmr EVM is configured with five independent circuits providing options to operate using either a +3.3Vdc or +5.0Vdc input and provides isolated 3.3Vdc or 5.0Vdc outputs. Two of the circuits include LDO's to regulate the output. The five configurations include 3Vdc-to-3Vdc with no (...)

Features
  • Push-Pull Driver for Small Transformers
  • Single 3.3V or 5V Supply
  • High Primary-side Current Drive
  • Low Ripple on Rectified Output
View details
DAUGHTER CARD Download
document-generic User guide
Description

The MSP-ISO Isolation board is an easy-to-use plug-in module that offers galvanic isolation between the Debug and Target circuits for MSP430 LaunchPad developers. This is important in cases where the debug circuitry may adversely affect the quality of analog signal measurements made by the MSP430 (...)

Features
  • Isolating target microcontroller from power and data signals removes influence of emulation  hardware in order to improve analog measurements
  • Galvanic isolation between emulation programming and target sides of supported development boards
  • No directly connected data signals
  • No directly connected  (...)
View details

Software development

SUPPORT SOFTWARE Download
SLLC470.ZIP (205486 KB)

Design tools & simulation

SIMULATION MODEL Download
SLLM173A.ZIP (2 KB) - PSpice Model
SIMULATION MODEL Download
SLLM223.TSC (74 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLLM224.ZIP (13 KB) - TINA-TI Spice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
View details
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI — TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

Reference designs

Many TI reference designs include the SN6501 Use our reference design selection tool to review and identify designs that best match your application and parameters.
View reference designs

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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