CHL8314-02CRT
CHL8314-02CRT Datasheet
Digital Multi-Phase Buck Controller CHL8314
| Part | Datasheet |
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CHL8314-02CRT |
CHL8314-02CRT (pdf) |
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| Digital Multi-Phase Buck Controller CHL8314 • Intel VR11.x compliant Digital PWM Controller • Programmable 1-phase to 4-phase operation • Customized Digital Over-Clocking features an easy-to-use SMBus Gamer command and a Gamer VID control up to 2.3V, Gamer Vmax, VID Override or Track, Digital Load-Line Adjust, Gamer OC/OVP, Gamer OFF pin and Gamer OTP • IR Efficiency Shaping features a Variable Gate Drive and Dynamic Phase Control • 1-phase to 2-phase PSI for Light Loads • Adaptive Transient Algorithm minimizes capacitors • Enables Thermal Phase Balancing • SMBus Fault Indicators OVP, UVP, OCP, OTP • SMBus interface for configuring and monitoring SMBus commands include monitoring input current and power • Compatible with IR ATL Drivers and tri-state drivers • 9 bytes of NVM storage available for customer use • +3.3V supply voltage 0ºC to 85ºC Ambient operation • RoHS Compliant, MSL level 1 package • VR11.x CPU VRD and VRM DDR Memory • High Performance Desktops, Servers and Graphics Cards • Over-clocking and High-Efficiency Application The CHL8314 is a 4-phase digital synchronous buck controller for core regulation of high-performance VR11.1 and VR11.0 platforms. The CHL8314 is fully compliant with VR11.1 including Power Status Indicator PSI and for improved light load efficiency and accurate current output IMON . The CHL8314 includes a customized set of digital overclocking features which require no external components. Gaming applications can use the SMBus interface to place the VRD into “Gamer Mode” to extend VID up to 2.3V with mV resolution. The CHL8314 deploys a number of efficiency shaping features such as variable MOSFET gate drive versus load, programmable PSI modes for optimum light-load along with programmable phase shedding to autonomously add/drop phases versus load. CHL8314 supports NTC temperature sense to report temperature and trigger VR HOT and OTP faults. Digital thermal balancing allows proportional current imbalance between phases. The CHL8314 provides extensive OVP, UVP, OCP, and OTP fault protection. Device and fault configuration parameters are easily defined using the IR Power Designer GUI and stored in on-chip non-volatile memory NVM . The 3-pin SMBus interface can be used to monitor a variety of operating parameters on up to seven CHL8314 based VRs. The controller includes a unique sensorless and lossless input current monitoring capability. BASIC APPLICATION PIN DIAGRAM IRTN1 ISEN1 IRTN2 ISEN2 IRTN3 ISEN3 IRTN4 ISEN4 NC 48 47 46 45 44 43 42 41 40 39 38 37 RCSP 1 RCSM 2 VCC 3 VCPU 4 VRTN 5 SADDR/ GAMER_OFF IMON 7 RRES 8 VINSEN 9 TSEN 10 EN 11 V18A 12 CHL8314 48 Pin 7mmx 7mm QFN TOP VIEW ORDERING INFORMATION CHL8314 CHL8314 T Tape and Reel R Package Type DFN C Operating Temperature Commercial Standard XX Configuration File ID Package QFN Tape & Reel Qty 3000 Part Number CHL8314CRT CHL8314-XXCRT1 Notes “xx” indicates customer specific configuration file. IRTN1 ISEN1 IRTN2 ISEN2 IRTN3 ISEN3 IRTN4 ISEN4 NC 48 47 46 45 44 43 42 41 40 39 38 37 RCSP 1 RCSM 2 VCC 3 VCPU 4 VRTN 5 SADDR/ GAMER_OFF IMON 7 RRES 8 VINSEN 9 TSEN 10 EN 11 V18A 12 CHL8314 48 Pin 7mmx 7mm QFN TOP VIEW 36 VCC 35 NC 34 NC 33 PWM4 32 PWM3 31 PWM2 30 PWM1 29 NC 28 VCC 27 VAR_GATE 26 VR_HOT 25 VR_READY 13 14 15 16 17 18 19 20 21 22 23 24 SALERT# SDA SCL PSI# VID7 VID6 VID5 VID4 VID3 VID2 VID1 VID0 Figure 3 CHL8314 Top View Enlarged 2 October 12, 2011 | FINAL | V1.06 |
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