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ISL6244 Datasheet Multi-phase Pwm Controller

Manufacturer: Intersil (now Renesas)

Overview: ® ISL6244 Data Sheet November 2003 FN9106.1 Multi-Phase PWM Controller The ISL6244 provides core-voltage regulation by driving 2 to 4 interleaved synchronous-rectified buck-converter channels in parallel. Interleaving the channel timing results in increased ripple frequency which reduces input and output ripple currents. The reduction in ripple results in lower component cost, reduced dissipation, and a smaller implementation area. The ISL6244 uses cost and space-saving rDS(ON) sensing for channel current balance, active voltage positioning, and over-current protection. Output voltage is monitored by an internal differential remote sense amplifier. A high-bandwidth error amplifier drives the output voltage to match the programmed 5-bit DAC reference voltage. The resulting compensation signal guides the creation of pulse width modulated (PWM) signals to control companion Intersil MOSFET drivers. The OFS pin allows direct offset of the DAC voltage from 0V to 100mV using a single external resistor. The entire system is trimmed to ensure a system accuracy of ± 1%.

Key Features

  • of this controller IC include Dynamic VIDTM technology allowing seamless on-the-fly VID changing without the need of any external components. Battery “feed-forward” is provided to allow for traditional control schemes over total input voltage variation. Output voltage “droop” or active voltage positioning is optional. When employed, it allows the reduction in size and cost of the output capacitors required to support load transients. A threshold-sensitive enable input allows the use of an extern.

More Datasheets from Intersil (now Renesas)

Part Number Description
ISL6247 A Mobile Multi-Phase PWM Controller
ISL6217 Precision Multi-Phase Buck PWM Controller
ISL6219 Microprocessor CORE Voltage Regulator
ISL6226 Advanced PWM and Linear Power Controller for Portable Applications
ISL6232 High Efficiency System Power Supply Controller
ISL6235 Advanced Triple PWM Only Mode and Dual Linear Power Controller
ISL6257 Highly Integrated Narrow VDC Battery Charger
ISL6263 5-Bit VID Single-Phase Voltage Regulator
ISL6263B 5-Bit VID Single-Phase Voltage Regulator
ISL6265 Multi-Output Controller

ISL6244 Distributor