Product details

Rating Automotive Iout (typ) (A) 0.5 Vin (min) (V) 3 Vin (max) (V) 36 Features Enable, Duty-cycle control, Spread spectrum clocking, Slew-rate control, Short-circuit protection, Programmable over-current protection, Thermal shutdown Soft start Yes Operating temperature range (°C) -55 to 125 TI functional safety category Functional Safety-Capable Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2000 Switch current limit (typ) (A) 1.3
Rating Automotive Iout (typ) (A) 0.5 Vin (min) (V) 3 Vin (max) (V) 36 Features Enable, Duty-cycle control, Spread spectrum clocking, Slew-rate control, Short-circuit protection, Programmable over-current protection, Thermal shutdown Soft start Yes Operating temperature range (°C) -55 to 125 TI functional safety category Functional Safety-Capable Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2000 Switch current limit (typ) (A) 1.3
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9

SN6507-Q1 has an internal oscillator to set the switching frequency of the power stage. As the two power switches are out of phase, the oscillator frequency is twice of the actual switching frequency of each power switch. The duty cycle is fixed with 70 ns deadtime to avoid shoot-through. The duty cycle is changeable if duty cycle feature is enabled. Please refer to Section 8.3.3.

SN6507-Q1 has a wide switching frequency range from 100 kHz up to 2 MHz, which is pin-programmable through a resistor (RCLK) to GND. Below table lists the value of RCLK to achieve certain operating frequencies (fSW). The choice of switching frequency is a trade-off between power efficiency and size of capacitive and inductive components. For example, when operating at higher switching frequency, the size of the transformer and inductor is reduced, resulting in a smaller design footprint and lower cost. However, higher frequency increases switching losses and consequently degrades the overall power supply efficiency.

Figure 8-6 can also be used to estimate the programmable switching frequency, fSW, using an external resistor value, RCLK, where RCLK is in kΩ and fSW is in kHz:

If CLK pin is shorted to GND, the part switches at its default frequency, FSW. CLK pin floating is not a valid state of operation and will cause the part to stop switching until an external clock signal is present.

SN6507-Q1 has an internal oscillator to set the switching frequency of the power stage. As the two power switches are out of phase, the oscillator frequency is twice of the actual switching frequency of each power switch. The duty cycle is fixed with 70 ns deadtime to avoid shoot-through. The duty cycle is changeable if duty cycle feature is enabled. Please refer to Section 8.3.3.

SN6507-Q1 has a wide switching frequency range from 100 kHz up to 2 MHz, which is pin-programmable through a resistor (RCLK) to GND. Below table lists the value of RCLK to achieve certain operating frequencies (fSW). The choice of switching frequency is a trade-off between power efficiency and size of capacitive and inductive components. For example, when operating at higher switching frequency, the size of the transformer and inductor is reduced, resulting in a smaller design footprint and lower cost. However, higher frequency increases switching losses and consequently degrades the overall power supply efficiency.

Figure 8-6 can also be used to estimate the programmable switching frequency, fSW, using an external resistor value, RCLK, where RCLK is in kΩ and fSW is in kHz:

If CLK pin is shorted to GND, the part switches at its default frequency, FSW. CLK pin floating is not a valid state of operation and will cause the part to stop switching until an external clock signal is present.

The SN6507 -Q1 is a high voltage, high frequency push-pull transformer driver providing isolated power in a small solution size. The device comes with the push-pull topology’s benefits of simplicity, low EMI, and flux cancellation to prevent transformer saturation. Further space savings are achieved through duty-cycle control, which reduces component count for wide-input ranges, and by selecting a high switching frequency, reducing the size of the transformer.

The device integrates a controller and two 0.5-A NMOS power switches that switch out of phase. Its input operating range is programmed with precision undervoltage lockouts. The device is protected from fault conditions by over-current protection (OCP), adjustable under-voltage lockout (UVLO), over voltage lockout (OVLO), thermal shutdown (TSD), and break-before-make circuitry.

The programmable Soft Start (SS) minimizes inrush currents and provides power supply sequencing for critical power up requirements. Spread Spectrum Clocking (SSC) and pin-configurable Slew Rate Control (SRC) further reduces radiated and conducted emissions for ultra-low EMI requirements.

The SN6507 -Q1 is available in a 10-pin HVSSOP DGQ package. The device operation is characterized for a temperature range from –55°C to 125°C.

The SN6507 -Q1 is a high voltage, high frequency push-pull transformer driver providing isolated power in a small solution size. The device comes with the push-pull topology’s benefits of simplicity, low EMI, and flux cancellation to prevent transformer saturation. Further space savings are achieved through duty-cycle control, which reduces component count for wide-input ranges, and by selecting a high switching frequency, reducing the size of the transformer.

The device integrates a controller and two 0.5-A NMOS power switches that switch out of phase. Its input operating range is programmed with precision undervoltage lockouts. The device is protected from fault conditions by over-current protection (OCP), adjustable under-voltage lockout (UVLO), over voltage lockout (OVLO), thermal shutdown (TSD), and break-before-make circuitry.

The programmable Soft Start (SS) minimizes inrush currents and provides power supply sequencing for critical power up requirements. Spread Spectrum Clocking (SSC) and pin-configurable Slew Rate Control (SRC) further reduces radiated and conducted emissions for ultra-low EMI requirements.

The SN6507 -Q1 is available in a 10-pin HVSSOP DGQ package. The device operation is characterized for a temperature range from –55°C to 125°C.

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
SN6501-Q1 ACTIVE Automotive low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies Transformer driver with smaller package
SN6505A-Q1 ACTIVE Automotive, low-noise, 1-A, 160-kHz transformer driver with soft start for isolated power supplies Transformer driver with higher output current
SN6505B-Q1 ACTIVE Automotive, low-noise, 1-A, 420-kHz transformer driver with soft start for isolated power supplies Transformer driver with higher output current

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet SN6507-Q1 Low-Emissions, 36-V Push-Pull Transformer Driver with Duty Cyle Control for Isolated Power Supplies datasheet PDF | HTML 15 Feb 2021
Functional safety information SN6507-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 16 May 2022
Application note How to Reduce Emissions in Push-Pull Isolated Power Supplies (Rev. A) PDF | HTML 05 Oct 2021

Design & development

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

Evaluation board

SN6507DGQEVM — SN6507 evaluation module for low-emissions, 500-mA push-pull isolated power supplies

SN6507DGQEVM allows users to evaluate the performance and features of the SN6507 push-pull isolation transformer driver in an isolated power supply application.

User guide: PDF | HTML
Not available on TI.com
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
User guide: PDF
Reference designs

PMP31182 — Isolated bias power supply reference designs using four different topologies

This reference design showcases four isolated bias power supply designs using different topologies as PSR flyback, push-pull, LLC resonant and isolated DCDC module. These topologies provide specific benefits but at the same time come with trade-offs. An ample comparison of these topologies is done (...)
Test report: PDF
Reference designs

PMP41078 — High-voltage to low-voltage DC-DC converter reference design with GaN HEMT

This reference design describes a 3.5kW highvoltage to low-voltage DC-DC converter with 650V Gallium nitride (GaN) high-electron mobility transistors (HEMT). Using LMG3522R030 as primary switches makes the converter work at a high switching frequency. In this design, the converter uses a smaller (...)
Test report: PDF
Package Pins CAD symbols, footprints & 3D models
HVSSOP (DGQ) 10 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos