HIP6301.docx

1、HIP6301HIP6301Data Sheet June 2002 FN4765.2Microprocessor CORE Voltage RegulatorMulti-Phase Buck PWM ControllerThe HIP6301 multi-phase PWM control IC together with its companion gate drivers, the HIP6601B, HIP6602B, HIP6603B or HIP6604B and external MOSFETs provides a precision voltage regulation sy

2、stem for advanced microprocessors. Multiphase power conversion is a marked departure from earlier single phase converter configurations previously employed to satisfy the ever increasing current demands of modern microprocessors. Multi-phase convertors, by distributing the power and load current res

3、ults in smaller and lower cost transistors with fewer input and output capacitors. These reductions accrue from the higher effective conversion frequency with higher frequency ripple current due to the phase interleaving process of this topology. For example, a three phase convertor operating at 350

4、kHz will have a ripple frequency of 1.05MHz. Moreover, greater convertor bandwidth of this design results in faster response to load transients.Outstanding features of this controller IC includeprogrammable VID codes from the microprocessor thatrange from 1.100V to 1.850V with a system accuracy of1%

5、. Pull up currents on these VID pins eliminates the neednfor external pull up resistors. In addition “droop”compensation, used to reduce the overshoot or undershootiof the CORE voltage, is easily programmed with a singleresistor.hAnother feature of this controller IC is the PGOOD monitorcircuit whic

6、h is held low until the CORE voltage increases,during its Soft-Start sequence, to within 10% of theprogrammed voltage. Over-voltage, 15% above programmed.CORE voltage, results in the converter shuttingcdown andturning the lower MOSFETs ON to clamp and protect themicroprocessor. Under voltage is also

7、 detected and resultsin PGOOD low if the CORE voltage falls 10% below theprogrammed level. Over-current protection reduces thewregulator current to less than 25%wof the programmed tripvalue. These features provide monitoring and protection forthe microprocessor and power system.wFeaturesMulti-Phase

8、Power ConversionPrecision Channel Current Sharing- Loss Less Current Sampling - Uses rDS(ON) Precision CORE Voltage Regulation- 1% System Accuracy Over Temperature Microprocessor Voltage Identification Input- 5-Bit VID Inputom- 1.100V to 1.850V in 25mV Steps- Programmable “Droop” Voltagec Fast Trans

9、ient Recovery Time.Over Current ProtectionAutomatic Selection of 2, 3, or 4 Phase Operationx High Ripple Frequency, (Channel Frequency) Timesi. . . . . . . . . . . . . . . . . 100kHz to 6MHzNumber ChannelsfOrdering InformationaTEMP. (oC)PACKAGEPKG. NO.PART NUMBERHIP6301CB0 to 7020 Ld SOICM20.3HIP630

10、1CB-T20 Ld SOIC Tape and ReelHIP6301EVAL1Evaluation PlatformPinoutHIP6301 (SOIC)TOP VIEWVID4120VCCVID3219PGOODVID2318PWM4VID1417ISEN4VID0516ISEN1COMP615PWM1FB714PWM2FS/DIS813ISEN2GND912ISEN3VSEN1011PWM31CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Proced

11、ures.1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.Copyright Intersil Americas Inc. 2002. All Rights ReservedHIP6301Block DiagramPGOOD VCCPOWER-ONRESET (POR)VSEN+THREEUVSTATEX 0.9-OVm+LATCHCLOCK ANDSSAWTOOTHFS/ENGENERATORo+-OVP+X1.15-PWMcPW

12、M1-.SOFT-+STARTAND FAULT-iPWMPWM2LOGICf-COMP+a+PWMVID0-PWM3n-VID1VID2D/Ai+PWM4VID3+-PWME/A-VID4-.PHASEFBcCURRENTNUMBERCHANNELDETECTORCORRECTIONwI_TOTISEN1+w+ISEN2 +ISEN3OC+w-ISEN4I_TRIPGND2HIP6301Simplified Power System DiagramSYNCHRONOUSRECTIFIED BUCKVSENCHANNELPWM 1PWM 2SYNCHRONOUSRECTIFIED BUCKCH

13、ANNELmHIP6301MICROPROCESSORPWM 3SYNCHRONOUSRECTIFIED BUCKoPWM 4CHANNELcVIDSYNCHRONOUSRECTIFIED BUCK.CHANNELxFunctional Pin Descriptioniconverter. Pulling this pin to ground disables the converterthree states the PWM outputs. See Figure 10.fVID4120VCCGND (Pin 9)VID3219PGOODBias and reference ground. All signals are referenced to thisVID2318PWM4andpin.VID1417ISEN4nVSEN (Pin 10)VID0516ISEN1iPower good monitor input. Connect to the microprocessor-COMP615PWM1hCORE voltage.FB714PWM2FS/DIS813ISEN2PWM1 (Pin 15), PWM2 (Pin 14), PWM3 (Pin 11) andGND912ISEN3PWM4 (Pin 18)VSEN1011PWM3