NCP5392 ON Semiconductor, NCP5392 Datasheet

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... NCP5392 www.DataSheet4U.com 2/3/4-Phase Controller for CPU Applications The NCP5392 provides four−phase buck solution which combines differential voltage sensing, differential phase current sensing, and adaptive voltage positioning to provide accurately regulated power for both Intel and AMD processors. Dual−edge pulse−width modulation (PWM) combined with inductor current sensing reduces system cost by providing the fastest initial response to dynamic load events. Dual− ...

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... PIN CONNECTIONS VID0 3 VID1 4 VID2 5 VID3 NCP5392 6 VID4 2/3/4−Phase Buck Controller 7 (QFN40) VID5 8 VID6 9 VID7 10 ROSC Figure 1. NCP5392 QFN40 Pin Connections (Top View) http://onsemi.com DRVON 28 CS4 27 CS4N 26 CS3 25 CS3N 24 CS2 23 CS2N 22 CS1 21 CS1N ...

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... Droop Amp −2 − Gain = − Gain = − Gain = − + Gain = 6 + − + 4.25 V UVLO GND (FLAG) Figure 2. NCP5392 Block Diagram http://onsemi.com 3 + − + − + − + − + Control, Fault Logic − ILimit and Monitor Circuits IMON DRVON PSI NTC VR_HOT ...

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... VSSN 12V_FILTER +5V C1 PSI RNTC1 NTC RT1 12 IMON IMON CS1P 21 12V_FILTER CS1N CS2P 23 CS2N 32 NCP5392 G3 26 CS3P 25 CS3N CS4P 27 CS4N 29 DRVON 12V_FILTER 11 10 RLIM1 RLIM2 12V_FILTER Figure 3. Application Schematic for Four Phases http://onsemi.com 4 12V_FILTER BST ...

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... VSSN 12V_FILTER +5V C1 PSI RNTC1 NTC RT1 12 IMON IMON CS1P 21 12V_FILTER CS1N CS2P 23 CS2N 32 NCP5392 G3 26 CS3P 25 CS3N CS4P 27 CS4N 29 DRVON 12V_FILTER 11 10 RLIM1 RLIM2 Figure 4. Application Schematic for Three Phases http://onsemi.com 5 12V_FILTER BST Q1 VCC ...

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... VCCP VSSN 12V_FILTER +5V C1 PSI RNTC1 NTC RT1 12 IMON IMON CS1P 21 CS1N CS2P 23 CS2N 32 NCP5392 G3 26 CS3P 25 CS3N CS4P 27 CS4N 29 DRVON 12V_FILTER 11 10 RLIM1 RLIM2 Figure 5. Application Schematic for Two Phases http://onsemi.com 6 12V_FILTER BST Q1 VCC ...

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PIN DESCRIPTIONS www.DataSheet4U.com Pin No. Symbol 1 EN Threshold sensitive input. High = startup, Low = shutdown. 2 VID0 Voltage ID DAC input 3 VID1 Voltage ID DAC input 4 VID2 Voltage ID DAC input 5 VID3 Voltage ID DAC ...

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PIN CONNECTIONS VS. PHASE COUNT www.DataSheet4U.com Number of Phases G4 4 Phase 4 Out 3 Tie to GND 2 Tie to GND MAXIMUM RATINGS ELECTRICAL INFORMATION Pin Symbol COMP V DRP V+ V– DIFFOUT VR_RDY VCC ROSC IMON Output All ...

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ELECTRICAL CHARACTERISTICS www.DataSheet4U.com (Unless otherwise stated: 0°C < T Parameter ERROR AMPLIFIER Input Bias Current (Note 3) Noninverting Voltage Range (Note 3) Input Offset Voltage (Note 3) Open Loop DC Gain Open Loop Unity Gain Bandwidth Open Loop Phase Margin ...

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ELECTRICAL CHARACTERISTICS www.DataSheet4U.com (Unless otherwise stated: 0°C < T Parameter CSSUM AMPLIFIER Current Sense Input to CSSUM Gain Current Sense Input to CSSUM −3 dB Bandwidth Current Sense Input to CSSUM Output Slew Rate Current Summing Amp Output Offset Voltage ...

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ELECTRICAL CHARACTERISTICS www.DataSheet4U.com (Unless otherwise stated: 0°C < T Parameter IMON Output source current (Note 3) Output sink current (Note 3) Maximum Clamp Voltage OSCILLATOR Switching Frequency Range (Note 3) Switching Frequency Accuracy 2− or 4−Phase Switching Frequency Accuracy 3−Phase ...

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ELECTRICAL CHARACTERISTICS www.DataSheet4U.com (Unless otherwise stated: 0°C < T Parameter PWM OUTPUTS Output Impedance – State 2/3/4−PhASE DETECTION Gate Pin Source Current Gate Pin Threshold Voltage Phase Detect Timer DIGITAL SOFT−START Soft−Start Ramp Time VR11 Vboot time ...

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ELECTRICAL CHARACTERISTICS www.DataSheet4U.com (Unless otherwise stated: 0°C < T Parameter OVERVOLTAGE PROTECTION AMD PSI Overvoltage Threshold (Note 3) Delay UNDERVOLTAGE PROTECTION VCC UVLO Start Threshold VCC UVLO Stop Threshold VCC UVLO Hysteresis VR_HOT VR_HOT Upper Voltage Threshold VR_HOT Lower Voltage ...

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Table 1. VRM11 VID Codes www.DataSheet4U.com VID7 VID6 VID5 800 mV 400 mV 200 ...

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Table 1. VRM11 VID Codes www.DataSheet4U.com VID7 VID6 VID5 800 mV 400 mV 200 ...

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Table 1. VRM11 VID Codes www.DataSheet4U.com VID7 VID6 VID5 800 mV 400 mV 200 ...

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Table 1. VRM11 VID Codes www.DataSheet4U.com VID7 VID6 VID5 800 mV 400 mV 200 ...

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Table 2. AMD Processor 6−bit VID Code www.DataSheet4U.com (VID) Codes ID5 ID4 ID3 ID2 ID1 ...

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Table 2. AMD Processor 6−bit VID Code www.DataSheet4U.com (VID) Codes ID5 ID4 ID3 ID2 ID1 ...

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... Intel VR11.1 and AMD CPU power system. NCP5392 has been designed to work with the NCP5359 driver. Remote Output Sensing Amplifier(RSA) A true differential amplifier allows the NCP5392 to ...

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... Typical AMD and VR11 soft−start sequences in are shown in the following graphs (Figure 9 and 10). APPLICATION INFORMATION The NCP5392 demo board for the NCP5392 is available by request configured as a four phase solution with decoupling designed to provide load line under a 100 A step load. ...

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Figure 7. 1 0.5 V Dynamic VID response Figure 8. Dynamic VID Settling Time Rising (CH1: VID1, CH2: DAC, CH3:VCCP) Design Methodology Decoupling the V Pin on the input filter is required as ...

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Calculation Real 0 100 Freq−kHz Figure 11. ROSC vs. Frequency For multiphase controller, the ripple current can be calculated as, Therefore calculate the current limit voltage as below Equation 4, ...

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... T2 )@R ISO2 SUM Inductor Current Sensing Compensation The NCP5392 uses the inductor current sensing method filter is selected to cancel out the impedance from inductor and recover the current information through the yields a nominal LIM2 inductor’s DCR. This is done by matching the RC time ...

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... Voff 1k C4 10.6p 0 Figure 13. NCP5392 Average SPICE Model plus the board impedance 1.9 mW. The actual output filter impedance does not drop to 1.0 mW until the ceramic breaks in at over 375 kHz. The controller must provide some loop gain slightly less than one out to a frequency in excess 300 kHz. At frequencies below where the bulk capacitance ESR breaks with the bulk capacitance, the DC− ...

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... VDRP is externally summed into the feedback network by the resistor RDRP. This introduces an offset which is proportional to the output current thereby forcing a controlled, resistive output impedance. 1mOhm 1000 10000 Frequency Figure 14. NCP5392 Circuit Frequency Response 1 (eq. 10 Bulk Bulk (eq. 11 ...

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... Power Saving Indicator (PSI) and Phase Shedding signal to the VR controller to indicate when the processor low power state. NCP5392 use the status of PSI pin to decide if there is a need to change its operating state to maximize efficiency at light loads. When PSI = 0, the PSI function will be enabled, and VR system will be running at a single phase power saving mode ...

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Figure 19 www.DataSheet4U.com indicates a PSI−on transition from a 3−phase mode to a single phase mode. While staying stable in PSI mode, the PWM signal of phase 1 will vary from a mid−state ...

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... Figure 23. AMD, 1.55 V OVP Event Gate Driver and MOSFET Selection ON Semiconductor provides the NCP5359 as a companion gate driver IC. The NCP5359 driver is optimized to work with a range of MOSFETs commonly used in CPU applications. The NCP5359 provides special functionality including power saving mode operation and is required for high performance dynamic VID operation ...

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V (Gate Driver) UVLO 5 V (Controller) UVLO EN VID DRVON VSP−VSN VR_RDY 5 V (Controller) UVLO EN DRVON VID VSP−VSN VR_RDY SYSTEM TIMING DIAGRAM 3.5 ms Valid VID 1 ms min 1.5 ms 500 ms Figure 24. ...

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Diffout ~ 1.3 V VR_RDY DRVON = High VSP = VID − VDRP VR_RDY DRVON 185 185 mV Figure 26. OVP Shutdown I + 1.3 limit Figure 27. ...

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... MILLIMETERS DIM MIN MAX A 0.80 1.00 A1 0.00 0.05 0.20 REF A3 b 0.18 0.30 D 6.00 BSC D2 4.00 4.20 E 6.00 BSC E2 4.00 4.20 e 0.50 BSC L 0.30 0.50 K 0.20 −−− SOLDERING FOOTPRINT* 6.30 4.20 40X 0.65 1 4.20 40X 36X 0.30 0.50 PITCH DIMENSIONS: MILLIMETERS ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your loca Sales Representative 6.30 NCP5392/D ...