NCP5215

NCP5215 Dual Synchronous Buck Controller for Notebook Power System The NCP5215, a high−efficiency and fast−transient−response dual−channel buck controller, provides a multifunctional power solution for notebook power system. 180o interleaved operation function between the two channels has capabilities of reducing the common input capacitor requirement and improving noise immunity. Adaptive−Voltage−Positioning (AVP) control reduces the requirement of output filter capacitors. Programmable power−saving operation ensures high efficiency over entire load range. Input feedforward voltage−mode control is employed to deal with wide input voltage range. Transient−Response−Enhancement (TRE) control for the both channels enables fast transient response. Features Wide Input Voltage Range: 4.5 V to 24 V Adjustable Output Voltage Range: 0.8 V to 3.0 V Selectable Nominal Fixed Switching Frequency: 200 kHz, 300 kHz, and 400 kHz 180° Interleaved Operation Function between the Two Channels Programmable Adaptive−Voltage−Positioning (AVP) Operation Programmable Transient−Response−Enhancement (TRE) Control Power Saving Operation under Light Load Condition Input Feedforward Voltage Mode Control Resistive or Inductor’s DCR Current Sensing 1% Internal 0.8 V Reference External Soft−Start Operation Output Discharge and Soft−Stop Built−in Gate Drivers Input Supplies Undervoltage Lockout Output Overvoltage and Undervoltage Protections Accurate Overcurrent Protection T...