IR3088AMPBF
IR3088AMPBF Datasheet
IR3088APbF
| Part | Datasheet |
|---|---|
IR3088AMPBF |
IR3088AMPBF (pdf) |
| Related Parts | Information |
|---|---|
IR3088AMTRPBF |
IR3088AMTRPBF |
IR3088MPBF |
IR3088MPBF |
| PDF Datasheet Preview |
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| IR3088APbF DATA SHEET XPHASETM PHASE IC WITH FAULT AND OVERTEMP DETECT The IR3088A Phase IC combined with an IR XPhaseTM Control IC provides a full featured and flexible way to implement power solutions for the latest high performance CPUs and ASICs. The “Control” IC provides overall system control and interfaces with any number of “Phase” ICs which each drive and monitor a single phase of a multiphase converter. The XPhaseTM architecture results in a power supply that is smaller, less expensive, and easier to design while providing higher efficiency than conventional approaches. The IR3088A is intended for the following application conditions • Excessive impedance between converter and load • Output voltage exceeding the control IC reference/VID voltage is desired • 2.5A Average Gate Drive Current • Loss-Less Inductor Current Sense • Internal Inductor DCR Temperature Compensation • Programmable Phase Delay • Programmable Feed-Forward Voltage Mode PWM Ramp • Sub 100ns Minimum Pulse Width supports 1MHz per-phase operation • Current Sense Amplifier drives a single wire Average Current Share Bus • Current Share Amplifier reduces PWM Ramp slope to ensure sharing between phases • Body BrakingTM disables Synchronous MOSFET for improved transient response and prevents negative output voltage at converter turn-off • Phase Fault Detection • Programmable Phase Over-Temperature Detection • Control FET driver’s 25V input voltage capability simplifies boot-strap supply design • Small thermally enhanced 20L MLPQ package APPLICATION CIRCUIT VGATE 12V PHASE FAULT VRHOT DAC BIAS 5 Wire Analog Bus RAMP From Control IC ISHARE RPHASE2 RPHASE1 RCS- RBIASIN 20k CCS- CCS+ RCS+ BIASIN 20 DACIN 19 PHSFLT 18 CSIN- 17 CSIN+ 16 DBST CBST 1 RMPIN+ VCCH 15 2 RMPIN- IR3088A GATEH 14 3 HOTSET PHASE PGND 13 IC 4 VRHOT GATEL 12 5 ISHARE VCCL 11 6 SCOMP 7 EAIN 8 PWMRMP 9 LGND 10 VCC CSCOMP RVCC RPWMRMP CVCCL CVCC CPWMRMP RPHASE3 Page 1 of 33 May 18, 2009 ORDERING INFORMATION IR3088APbF * Samples only Device IR3088AMTR * IR3088AM Order Quantity 3000 100 piece strips ABSOLUTE MAXIMUM RATINGS Operating Junction Storage Temperature to 150oC ESD Class 1C JEDEC standard PIN # 1 2 3 4 5 6 7 8 9 10 11 16 17 18 19 20 PIN NAME RMPIN+ RMPINHOTSET VRHOT ISHARE SCOMP EAIN PWMRMP LGND VCC VCCL GATEL PGND GATEH VCCH CSIN+ CSINPHSFLT DACIN BIASIN VMAX 20V n/a 24V 27V 0.3V VMIN -0.3V -0.3V -0.3V -0.3V -0.3V -0.3V -0.3V -0.3V n/a -0.3V -0.3V -0.3V DC, -2V for 100ns -0.3V -0.3V DC, -2V for 100ns -0.3V -0.3V -0.3V -0.3V -0.3V -0.3V ISOURCE 1mA 5mA 1mA 50mA n/a n/a 3A for 100ns, 200mA DC 3A for 100ns, 200mA DC 3A for 100ns, 200mA DC n/a ISINK 1mA 30mA 5mA 1mA 20mA n/a 50mA 3A for 100ns, 200mA DC 3A for 100ns, 200mA DC n/a 3A for 100ns, 200mA DC 3A for 100ns, 200mA DC 1mA 20mA 1mA Page 2 of 33 May 18, 2009 IR3088APbF ELECTRICAL SPECIFICATIONS Unless otherwise specified, these specifications apply over 8.4V VCC 14V, 6V VCCH 25V, 6V VCCL 14V, 0 oC TJ 125 oC, CGATEH = 3.3nF, CGATEL = 6.8nF PARAMETER Gate Drivers GATEH Rise Time GATEH Fall Time GATEL Rise Time GATEL Fall Time GATEL low to GATEH high delay GATEH low to GATEL high delay Disable Pull-Down Current |
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