MAX17582 19-4821 Rev 0 7/09 Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies General Description Features Single-/Dual-Phase, Quick-PWM Controller The MAX17582 is a 2-/1-phase-interleaved Quick- PWM step-down VID power-supply controller for 8mV V Accuracy Over Line, Load, and OUT Temperature notebook CPUs. True out-of-phase operation reduces input-ripple-current requirements and output-voltage 7-Bit 0 to 1.50V VID Control ripple, while easing component selection and layout dif- Dynamic Phase Selection Optimizes Active/Sleep ficulties. The Quick-PWM control provides instanta- Efficiency neous response to fast load-current steps. Active Transient Phase Overlap Reduces Output voltage positioning reduces power dissipation and bulk Capacitance output capacitance requirements and allows ideal posi- Integrated Boost Switches tioning compensation for tantalum, polymer, or ceramic Active Voltage Positioning with Adjustable Gain bulk output capacitors. Programmable 200kHz to 800kHz Switching A slew-rate controller allows controlled transitions among Frequency VID codes, controlled soft-start and shutdown, and con- Accurate Current Balance and Current Limit trolled exit from suspend. A thermistor-based temperature Adjustable Slew-Rate Control sensor provides a programmable thermal-fault output Power-Good, Clock Enable, and Thermal-Fault (VRHOT). A current-monitor output (IMON) provides an Outputs analog current output proportional to the power consumed Phase Current Imbalance Fault Output by the CPU. The MAX17582 includes output undervolt- age and thermal protection. When any of these protec- Drives Large Synchronous Rectifier MOSFETs tion features detect a fault, the controller shuts down. A 4V to 26V Battery Input-Voltage Range voltage-regulator power-OK (PWRGD) output indicates Undervoltage and Thermal-Fault Protection the output is in regulation. Additionally, the MAX17582 IMVP-6.5 Power Sequencing and Timing features true differential current sense and a phase-good Compliant (PHASEGD) output that indicates a phase imbalance Soft-Startup and Soft-Shutdown fault condition. The MAX17582 implements the Intel IMVP-6.5 VID code set. The MAX17582 is available in a 6mm x 6mm, 48-pin TQFN package. Pin Configuration Applications TOP VIEW IMVP-6.5 Core Supply 36 35 34 33 32 31 30 29 28 27 26 25 Multiphase CPU Core Supply N.C. 37 24 N.C. Voltage-Positioned, Step-Down Converters SLOW 38 23 PHASEGD Notebook/Desktop Computers D0 39 22 PWRGD D1 40 21 CLKEN Blade Servers D2 41 20 V3P3 D3 42 19 TON Ordering Information MAX17582 43 18 D4 PSI PART TEMP RANGE PIN-PACKAGE 44 17 D5 DPRSLPVR MAX17582GTM+ -40C to +105C 48 TQFN-EP* 45 16 D6 SHDN 46 15 +Denotes a lead(Pb)-free/RoHS-compliant package. CSP1 CSP2 *EP GND *EP = Exposed pad. 47 14 GND + GND 48 13 CSN1 CSN2 1 2 34 5 67 89 10 11 12 THIN QFN (6mm x 6mm) Quick-PWM is a trademark of Maxim Integrated Products, Inc. *EXPOSED PAD. CONNECTED TO GND. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE PGDIN BST1 THRM LX1 IMON DH1 ILIM PGND1 TIME DL1 GND V DD V VRHOT CC CCI DL2 FB PGND2 FBAC DH2 GNDS LX2 N.C. BST2Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies ABSOLUTE MAXIMUM RATINGS V , V V3P3 to GND ...........................................-0.3V to +6V BST1, BST2 to GND ...............................................-0.3V to +36V CC DD, D0D6 to GND..........................................................-0.3V to +6V BST1, BST2 to V .................................................-0.3V to +30V DD PGDIN, DPRSLPVR, PSI to GND..............................-0.3V to +6V LX1 to BST1..............................................................-6V to +0.3V SLOW to GND ..........................................................-0.3V to +6V LX2 to BST2..............................................................-6V to +0.3V CSP1, CSP2, CSN1, CSN2 to GND..........................-0.3V to +6V DH1 to LX1 ..............................................(-0.3V to V ) + 0.3V BST1 THRM, ILIM, PHASEGD to GND...............................-0.3V to +6V DH2 to LX2 ..............................................(-0.3V to V ) + 0.3V BST2 PWRGD, VRHOT to GND .........................................-0.3V to +6V Continuous Power Dissipation CLKEN to GND.........................................(-0.3V to V3P3) + 0.3V 6mm x 6mm, 48-Pin TQFN Up to +70C ...................2105mW FB, FBAC to GND.......................................(-0.3V to V ) + 0.3V (derate above +70C) ...........................................26.3mW/C CC TIME, IMON, CCI to GND...........................(-0.3V to V ) + 0.3V Operating Temperature Range .........................-40C to +105C CC PGND, GNDS to GND ...........................................-0.3V to +0.3V Junction Temperature......................................................+150C SHDN to GND (Note 1)...........................................-0.3V to +16V Storage Temperature Range .............................-65C to +165C TON to GND ...........................................................-0.3V to +30V Lead Temperature (soldering, 10s) .................................+300C DL1, DL2 to GND .......................................-0.3V to (V + 0.3V) DD Note 1: SHDN might be forced to 12V for the purpose of debugging prototype boards using the no-fault test mode, which disables fault protection and overlapping operation. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (Circuit of Figure 1, V = 10V, V = V = V = V = V = V = 5V, V3P3 = 3.3V, DPRSLPVR = GNDS = GND, V IN CC DD SHDN PGDIN PSI ILIM CSP1 = V = V = V = 1.0000V, FB = FBAC, R = 3.57k from FBAC to CSN1, D6D0 = 0101000 V = 5V T = 0C FBAC A CSN1 CSP2 CSN1 SLOW to +85C, unless otherwise noted. Typical values are at T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS PWM CONTROLLER V , V 4.5 5.5 CC DD Input-Voltage Range V V3P3 3.0 3.6 DAC codes from 0.8125V Measured at FB -0.5 +0.5 % to 1.5000V with respect to DC Output-Voltage GNDS DAC codes from 0.3750V V -7 +7 OUT Accuracy includes load- to 0.8000V mV regulation error DAC codes from 0 to (Note 2) -20 +20 0.3625V Boot Voltage V 1.094 1.100 1.106 V BOOT Line Regulation Error V = 4.5V to 5.5V, V = 4.5V to 26V 0.1 % CC IN FB Input Bias Current T = +25C -0.1 +0.1 A A GNDS Input Range -200 +200 mV GNDS Gain A V / V 0.97 1.00 1.03 V/V GNDS OUT GNDS GNDS Input Bias Current I T = +25C -0.5 +0.5 A GNDS A TIME Regulation Voltage V R = 71.5k 1.985 2.000 2.015 V TIME TIME 2 MAX17582