Description:The ISL95712 is fully compliant with AMD Fusion™ SVI 2. 0 and provides a complete solution for microprocessor and graphics processor core power. The ISL95712 controller supports two Voltage Regulators (VRs) for Core and Northbridge outputs. The Core VR can be configured for 4-, 3-, 2-, or 1-phase operation while the Northbridge VR supports 3-, 2- or 1-phase configurations for maximum flexibility. The two VRs share a serial control bus to communicate with the AMD CPU and achieve lower cost and smaller board
Renesas provides a recommended PCB layout guide in their application note AN1995, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize noise.
The output capacitor selection depends on the output voltage, output current, and desired ripple voltage. Renesas recommends using a low-ESR capacitor with a value between 10uF to 22uF for most applications. A more detailed selection guide can be found in the datasheet or by consulting with a Renesas FAE.
The ISL95712HRZ-T is rated for operation up to 105°C ambient temperature, but it's recommended to derate the output current and voltage to ensure reliable operation at high temperatures. Consult the datasheet for thermal derating guidelines.
The ISL95712HRZ-T has built-in OCP and SCP features. To implement these features, connect the OCP pin to a resistor divider network that sets the overcurrent threshold, and connect the SCP pin to a capacitor that sets the short-circuit detection time. Consult the datasheet for detailed implementation guidelines.
The input capacitor value and type depend on the input voltage, input current, and desired ripple voltage. Renesas recommends using a ceramic or film capacitor with a value between 1uF to 10uF for most applications. A more detailed selection guide can be found in the datasheet or by consulting with a Renesas FAE.
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ISL95712HRZ-T Overview
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