Intersil's processor power products are compliant with Intel/AMD specifications and feature R3/R4 and EAPP modulation schemes for ultra-fast load transient response, accurate current balancing under all load conditions, and excellent stability.
Suitable for VR12.5TM compatible microprocessor core power supplies
Intersil's ISL95816 four-phase buck controller is based on an innovative design that not only meets the requirements of the VR12.5 Intel processor, but also provides the industry's best dynamic transient response. Its wide input voltage range of 4.6V - 19V allows designers to use narrow VDC (DC voltage) or traditional adapters. The new device also offers PWM output for use with external drivers or compatible DrMOS solutions, giving designers greater flexibility.
The ISL95816 uses Intersil's proprietary R3 modulator to provide fast load transient response with minimal output voltage ripple. R3 modulator performance allows the VR12.5 specification to be supported at lower switching frequencies and smaller output capacitors. This results in a solution that is more efficient and has a smaller footprint, helping to reduce material requirements (BOM).
Features and specifications
• Programmable switching frequency provides design flexibility by allowing the use of a wide range of output filters
• Integrated overcurrent, overtemperature and overvoltage/undervoltage protection to prevent power outage
• 0.5V - 2.3V output voltage regulation
Intersil Power Solutions for Intel IMVP8TM CPUs
The ISL95852 is the industry's most integrated Vcore PMIC for the IMVP8 platform. Its 4mm x 4mm size and high switching frequency help to use small external inductors and capacitors to reduce board space by 50% compared to discrete solutions. The ISL95852 integrates control functions, MOSFET drivers, power MOSFETs, and fault monitoring and protection for three synchronous buck switching regulators. These high-efficiency voltage regulators convert system voltages from batteries or AC adapters into three voltages required by core processors, graphics processors, and system agents. The ISL95852's programmable switching frequency is twice that of competing solutions and can be adjusted during load transients up to 1.3MHz.
The ISL95521 is the industry's first hybrid Hybrid Power Boost (HPB) and Narrow VDC (NVDC) battery charger. Its charge current accuracy is 1.2%, four times higher than competing solutions, and extends battery life and supports faster system testing and calibration to help increase production yield. The ISL95521 modular battery charger is pin-configurable in HPB or NVDC mode, eliminating the need to redesign the circuit. Both configurations support 2-cell to 4-cell Li-Ion batteries and system turbo-boost mode, which helps the battery and AC adapter work together to meet system load when the system load's power requirements exceed the AC adapter's support capabilities. Claim. The HPB charger configuration in turbo mode allows the battery to power the system bus, while the NVDC charger quickly turns on the battery BGATE to help the adapter provide system power.
Main features and specifications of the ISL95852 PMIC
· Highly integrated power management IC for Intel IMVP8 CPUs
· Three high frequency integrated FET switching regulators generate core processor, graphics processor and system proxy voltage rails
· Comprehensive overcurrent, overvoltage, undervoltage and overtemperature fault protection, providing alarm signals
· I2C bus allows system fault monitoring, enable control, configurable GPIO and output voltage offset programming
· PROCHOT# and PSYS monitoring functions transfer system power information from the AC adapter or ISL95521 battery charger to the ISL95852 PMIC, digitize it and send it to the CPU
Main features and specifications of the ISL95521 hybrid battery charger
· Can be configured as HPB charger or NVDC charger via pin, enabling AC adapter to provide system power in turbo mode
· Protection features include PROCHOT# and PSYS indicators for system low voltage, adapter overcurrent, battery overcurrent, system overheat, adapter/battery current limit
· SMBus programmable limit setting with adapter/battery current monitor and 1.2% high accuracy to help extend battery life
· NFET can actively control the inrush current to prevent FET damage
· Prevent system crashes and memory loss: When the battery pack is disconnected during turbo and learn mode, the adapter can immediately take over the system load
· 16 switching frequency options from 350kHz to 1MHz help to use smaller, lower cost inductors
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