Texas Instruments SN6507

Description

The SN6507 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 the 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 scalable Slew Rate Control (SRC) further reduce emissions for ultra-low EMI requirements. The SN6507 is available in a 10-pin HVSSOP DGQ package. The device operation is characterized for a temperature range from –55°C to 125°C.

Features

• Push-pull driver for transformers
• Wide input voltage range: 3 V to 36 V
• 60 V input voltage tolerance
• Duty-cycle control for line regulation
• 0.5 A switches with programmable current limit
• Wide switching frequency range: 150 kHz to 2 MHz
• Allows small-size transformers
• Programmable switching frequency
• External clock synchronization option
• Ultra-low noise and EMI
• Symmetric push-pull topology
• Spread sprectrum clocking
• Pin-configurable slew-rate control
• Protection Features
• Adjustable under voltage lockout (UVLO)
• Programmable over-current protection (OCP)
• Over voltage lockout (OVLO)
• Thermal shutdown (TSD)
• Wide temperature range: –55°C to 125°C
• Programmable soft-start to reduce In-rush current
• 10-Pin HVSSOP (DGQ) package with thermal pad
• Transformers series information:https://www.we-online.com/components/products/media/767110

Typical applications

• Solar Inverters, Protection Relays, Factory Automation, Building Automation
• Medical instruments
• Motor Drives: IGBT and SiC Gate Driver Supplies, Isolated power supply for CAN, RS-485, RS-422, RS-232, SPI, I2C, low-power LAN

More information

• Datasheet
• IC product information