IPM6220EVAL1 Datasheet | Intersil

NS ES I G D W NT R NE D F O LA C EM E E D MEN ED REP b. 2004) D E R Data Sheet EN le Fe NOT EM (Availab R 232 I S L6 ISL6235 June 2001 FN9029 Advanced Triple PWM Only Mode and Dual Linear Power Controller for Portable Applications The ISL6235 provides a highly integrated power control and protection solution for five output voltages required in highperformance notebook PC applications. The IC integrates three fixed frequency pulse-width-modulation (PWM) controllers and two linear regulators along with monitoring and protection circuitry into a single 24 lead SSOP package. The two PWM controllers that regulate the system main 5V and 3.3V voltages are implemented with synchronousrectified buck converters. Synchronous rectification insures high efficiency over a wide range of input voltage and load variation. Efficiency is further enhanced by using the lower MOSFET’s r DS(ON) as the current sense element. Input voltage feed-forward ramp modulation, current-mode control, and internal feed-back pensation provide fast and stable handling of input voltage load transients encountered in advanced portable puter chip sets. The third PWM controller is a boost converter that regulates a resistor selectable output voltage of nominally 12V. Two internal linear regulators provide +5V ALWAYS and +3.3V ALWAYS low current outputs required by the notebook system controller. Features - PWM Only Mode for Reduced Noise at Light Loads - Provides Five Regulated Voltages - +5V ALWAYS - +3.3V ALWAYS - +5V Main - +3.3V Main - +12V - High Efficiency Over Wide Line and Load Range - Synchronous Buck Converters on Main Outputs - No Current-Sense Resistor Required - Uses MOSFET’s r DS(ON) - Optional Current-Sense Resistor for More Precision - Operates Directly From Battery 5.6 to 24V Input - Input Undervoltage Lock-Out (UVLO) - Excellent Dynamic Response - Voltage Feed-Forward and Current-Mode Control - Monitors Output Voltages - Synchronous Converters Operate Out of Phase -...