IPM6220A
Advanced Triple PWM and Dual Linear Power Controller for Portable Applications
Not Recommended for New Designs.
Recommended Replacement Part ISL6232.
Typical Diagram
Key Features
- 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
- Hysteretic Operation at Light Load
- No Current-Sense Resistor Required
- Uses MOSFET's rDS(ON)
- Optional Current-Sense Resistor for More Precision
- Operates Directly From Battery 5.6 to 22V 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
- Separate Shut-Down Pins for Advanced Configuration and Power Interface (ACPI) Compatibility
- 300kHz Fixed Switching Frequency on Main Outputs
- Thermal Shut-Down Protection
- Pb-free Available
Description
The IPM6220A 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 synchronous-rectified buck converters. Synchronous rectification and hysteretic operation at light loads contribute to high efficiency over a wide range of input voltage and load variation. Efficiency is further enhanced by using the lower MOSFET's rDS(ON) as the current sense element. Input voltage feedforward ramp modulation, current-mode control, and internal feed-back compensation provide fast and stable handling of input voltage load transients encountered in advanced portable computer 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.
Applications
- Mobile PCs
- Hand-Held Portable Instruments
