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CS5132

Cherry Semiconductor Corporation
Part Number CS5132
Manufacturer Cherry Semiconductor Corporation
Description Dual Output CPU Buck Controller
Published Mar 24, 2005
Detailed Description CS5132 CS5132 Dual Output CPU Buck Controller Description The CS5132 is a dual output CPU power supply controller. It c...
Datasheet PDF File CS5132 PDF File

CS5132
CS5132

Overview
CS5132 CS5132 Dual Output CPU Buck Controller Description The CS5132 is a dual output CPU power supply controller.
It contains a synchronous dual NFET buck controller utilizing the V2TM control method to achieve the fastest possible transient response and best overall regulation.
The CS5132 also contains a second nonsynchronous NFET buck controller.
These synchronous and non-synchronous buck regulators are designed to power the core and I/O logic of the latest high performance CPUs.
The CS5132 incorporates many additional features required to ensure the proper operation and protection of the CPU and power system.
The CS5132 dual output provides the industryÕs most highly integrated solution, minimizing external component count, total solution size, and cost.
The CS5132 is specifically designed to power IntelÕs Pentium¨ II processor and includes the following features: 5 bit DAC and fixed 1.
23V reference, Power-Good output, hiccup mode overcurrent protection, adaptive voltage positioning, and overvoltage protection.
The CS5132 will operate over an 8.
4V to 14V range and is available in 24 lead surface mount package.
s s s s s s s s s s s C6-C11 1200mF x 6 10V +5V C3-C5 1200mF x 3 10V 23 C2 1mF 20 16 C1 1m F Q1 FS70VSJ-03 L1 1.
2mH Features Synchronous Switching Regulator Controller (VCORE) Dual N-Channel MOSFET Synchronous Buck Design V2 TM Control Topology 200ns Transient Loop Response 5 bit DAC with 1% Tolerance Hiccup Mode Overcurrent Protection 65ns adaptive FET Non-Overlap Time Non-Synchronous Switching Regulator Controller (VI/O) Single N-Channel MOSFET buck design Adjustable Output with 2% Tolerance System Power Management Pentium¨ II System VCORE and VI/O Controlled by a Single IC Application Diagram +12V +12V +5V PCB TRACE (Free Current Sensing Element) 3.
3mW C23-C30 VCC(CORE) VID0 VCC1 VCC2 GATE(H) GATE(L) 13 VID3 VID4 GATE VFFB2 VFFB1 VOUT1 VFB2 COFF2 PWRGD OVP COMP1 22 21 5 4 C15 680pF C14 0.
1mF R9 51W 8 6 C13 0.
1mF COMP2 C12 0.
1mF C22 100pF R8 17...


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