NCP5222 ON Semiconductor, NCP5222 Datasheet
NCP5222
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NCP5222 Summary of contents
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... Synchronous Buck Controller for Notebook Power System The NCP5222, a fast−transient−response and high−efficiency dual−channel / two−phase buck controller with built−in gate drivers, provides multifunctional power solutions for notebook power system. 180° interleaved operation between the two channels / phases has a capability of reducing cost of the common input capacitors and improving noise immunity ...
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ICS1 FB1 MP1 4 VIN MP2 5 FB2 6 ICS2 7 Figure 1. Typical Application Diagram for A Dual−Channel Application http://onsemi.com 2 CS1− / Vo1 CS1+ PGND1 21 PGO OD1 20 PGOO D1 ...
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ICS1 1 FB1 2 CO MP1 3 4 VIN MP2 6 FB2 7 ICS2 Figure 2. An Application Diagram for A Two−Phase Application http://onsemi.com 3 CS1− / Vo1 CS1+ PGND1 21 20 PGOO ...
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CS1 CS1−/Vo1 28 DISCHG1 DRVS / Share 2CH Driver for 18 Sharing−FET 2PH Configur ation Detection FB1 2 COMP1 3 ICS1 1 20k G m 20k I CS2 7 CS2 CS2−/Vo2 8 DISCHG2 CS1− ...
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PIN DESCRIPTION Pin No. Symbol 1 ICS1 Current−Sense Output 1. Output of the current−sense amplifier of channel 1. 2 FB1 Feedback 1. Output voltage feedback of channel 1. 3 COMP1 COMP1. Output of the error amplifier of channel 1. 4 ...
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MAXIMUM RATINGS Rating Power Supply Voltages to AGND High−Side Gate Driver Supplies: BST1 to SWN1, BST2 to SWN2 High−Side Gate Driver Voltages: DH1 to SWN1, DH2 to SWN2 Input Supply Voltage Sense Input to AGND Switch Nodes High−Side Gate Drive ...
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ELECTRICAL CHARACTERISTICS Characteristics SUPPLY CURRENT V Quiescent Supply Current in CC power−saving operation V Shutdown Current CC V Quiescent Supply Current in CCP FPWM operation V Quiescent Supply Current in CCP power−saving operation V Shutdown Current CCP BST Quiescent Supply ...
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ELECTRICAL CHARACTERISTICS Characteristics INTERNAL REFERENCE VFB Regulation Voltage SWITCHING FREQUENCY Normal Operation Frequency INTERNAL SOFT−START Soft−Start Time SWITCHING REGULATOR Ramp Offset Voltage Ramp Amplitude Voltage Minimum Ton Minimum Toff VOLTAGE ERROR AMPLIFIER DC Gain Unity Gain Bandwidth Slew Rate Output ...
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ELECTRICAL CHARACTERISTICS Characteristics CONFIGURATION DETECTION Configuration Detection Time Pull−LOW Resistance in Detection Detection Threshold GATE DRIVER DH Pull−HIGH Resistance DH Pull−LOW Resistance DL Pull−HIGH Resistance DL Pull−LOW Resistance Dead Time CONTROL LOGIC EN Logic Input Voltage Threshold for Disable EN ...
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... In this mode, an external MOSFET SSH is employed to connect the two output power rails together, and the pin DRVS of the NCP5222 provides driving signal to SSH. Two filter capacitors CCS1 and CICS2 are connected with two current−sense output pins ICS1 and ICS2, respectively ...
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... W MOSFET per channel connected from CS−/Vo pin to PGND pin, when EN is low or the channel is under any fault condition. Current−Sense Network In the NCP5222, the output current of each channel is sensed differentially. A high gain and low offset−voltage 0.2V 150us ...
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... Protection Output Regulation As shown in Figure 8, with a high gain error amplifier and an accurate internal reference voltage, the NCP5222 regulates average DC value of the output voltage to a design target by error integration function. The output has good accuracy over full−range operation conditions and external component variations ...
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R11 FB1 R14 IFB2 R24 FB2 R21 Figure 10. PWM Output Regulation in Two−Phase Mode In the two−phase operation, the phase 1 has the same output regulation control as what is in the dual−channel operation. The output voltage is R ...
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... EN pin for each channel, respectively. The operation modes can be external preset or on−line programmed. The two channels / phases controlled by the NCP5222 share one input power rail. The both channels / phases operate at a fixed 300 kHz normal switching frequency in ...
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... Thermal protection and input power supply undervoltage lockout; 2. Output overvoltage protection; 3. Output overcurrent protection and output undervoltage protection. Input Power Supply Undervoltage Lock Out (UVLO) The NCP5222 provides UVLO functions for both input power supplies (V and the power stage and IN CC controller itself ...
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... EN CC has toggled states. Thermal Protection The NCP5222 has a thermal shutdown protection to protect the device itself from overheating when the die temperature exceeds 150°C. After the thermal protection is triggered, the fault state can be ended by re−applying when the die temperature drops down below 125° ...
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Figure 12. Layout Guidelines in Two−Phase Mode http://onsemi.com 17 ...
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TYPICAL OPERATING CHARACTERISTICS 0.808 0.806 0.804 0.802 0.8 0.798 0.796 0.794 0.792 −40 − AMBIENT TEMPERATURE (°C) A Figure 13. Reference Voltage V Temperature −40 −20 0 ...
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TYPICAL OPERATING CHARACTERISTICS 4.5 4.4 4.3 4.2 4.1 4 −40 − AMBIENT TEMPERATURE (°C) A Figure 19. V Start Threshold VCCUV+ vs. CC Ambient Temperature 4 3.8 3.6 3.4 3.2 3 −40 −20 0 ...
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TYPICAL OPERATING CHARACTERISTICS 1.055 1.054 1.053 1.052 1.051 1.05 1.049 0 OUTPUT CURRENT (A) O Figure 25. Output Voltage vs. Output Current ...
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TYPICAL OPERATING CHARACTERISTICS Figure 29. Input Voltage Ripple ( 1. 0.56 mH 470 1. ...
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TYPICAL OPERATING CHARACTERISTICS Figure 35. Powerup Operation without Biased Output ( 1. Mode) Figure 37. Power−Down Operation ( Skip Mode) O Figure 39. ...
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TYPICAL OPERATING CHARACTERISTICS Figure 41. Line Transient Response ( 1. 0.56 mH 470 1. ...
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Figure 47. Schematic of Evaluation Board http://onsemi.com 24 ...
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Figure 48. Layout of Evaluation Board http://onsemi.com 25 ...
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... Thick Film Chip Resistors, 100 W, $1%, 0 R18 R19 Thick Film Chip Resistors, 1 kW, $1%, 0 R16 R26 Thick Film Chip Resistors, 3.9 kW, $1%, 0.1 W Package Part Number QFN28 NCP5222MNR2G (4x4 mm) SOT−23 2N7002LT1G SC−70 NTS4001NT1G SO−8 Flat NTMFS4821NT1G Lead SO−8 Flat NTMFS4847NT1G Lead SO−8 Flat ...
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BILL OF MATERIALS FOR EVALUATION BOARD Item Part Reference Description 27 R11 R21 Thick Film Chip Resistors, 5.1 kW, $1%, 0 R15 R25 Thick Film Chip Resistors, 16 kW, $1%, 0 R14 R24 Thick Film Chip ...
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... DIM MIN MAX A 0.80 1.00 A1 0.00 0.05 A3 0.20 REF b 0.15 0.25 D 4.00 BSC D2 2.50 2.70 E 4.00 BSC E2 2.50 2.70 e 0.40 BSC K 0.30 REF L 0.30 0.50 L1 −−− 0.15 RECOMMENDED MOUNTING FOOTPRINT* 4.30 28X 2.71 0.62 1 4.30 28X 0.26 0.40 PITCH DIMENSIONS: MILLIMETERS ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP5222/D ...