Slew Rate Controlled Ultralow Noise Push-Pull DC/DC Controller Features: Greatly Reduced Conducted and Radiated EMI Low Switching Harmonic Content Independent Control of Output Switch Voltage and Current Slew Rates Greatly Reduced Need for External Filters Dual N-Channel MOSFET Drivers 20kHz to 250kHz Oscillator Frequency Easily Synchronized to External Clock Regulates Positive and Negative Voltages Easier Layout Than with Conventional Switchers