Automotive Grade Transformer Driver for Isolated Power Supplies
The NSIP6051-Q1 is an automotive grade push-pull transformer driver specially designed for small size, low-power isolation power supply with low standby power consumption. The periphery of the circuit only requires simple input and output filter capacitors, isolation transformer, and rectifier circuits. Its internal integrated oscillator provides a pair of highprecision complementary signals to drive two N-channel MOSFETs. The internal design of the chip follows a symmetrical structure, which can effectively ensure the high symmetry of the two power MOSFETs and avoid magnetic bias during the working process of the circuit. Ultra-low noise and EMI are achieved by slew rate control of the output switch voltage and through Spread Spectrum Clocking (SSC). The internal protection features include over current protection, under-voltage lockout, thermal shutdown and break-before-make circuitry. The NSIP6051 is available in a small SOT-23 (5) package, and is specified for operation at temperatures from –40°C to 125°C.
Product Features
• Push-pull driver for transformers
• Support 2.25V to 5.5V supply
• Ultra-low EMI
• Over-current protection (OCP)
• Over temperature protection
• Spread spectrum clocking
• Slew-rate control
• Small 5-pin SOT-23 package
• AEC-Q100 Grade 1 Qualified
• RoHS & REACH Compliance
Application
• Isolated interface power supply for I2C, CAN, RS-485, RS-422, RS-232, SPI, Low-Power LAN
• IGBT gate drive power supply
Functional Block Diagram
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