MAX17021/MAX17082/MAX17482 19-4372 Rev 2 7/09 Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies General Description Features Single-/Dual-Phase, Quick-PWM Controllers The MAX17021/MAX17082/MAX17482 are 2/1-phase- interleaved Quick-PWM step-down VID power-supply MAX17021 IMVP-6+ (Montevina) controllers for notebook CPUs. True out-of-phase oper- MAX17082/MAX17482 IMVP-6.5 (Calpella) ation reduces input ripple current requirements and 0.5% V Accuracy Over Line, Load, and OUT output- voltage ripple, while easing component selec- Temperature tion and layout difficulties. The Quick-PWM control pro- 7-Bit 0 to 1.50V VID Control vides instantaneous response to fast load-current steps. Active voltage positioning reduces power dissi- Dynamic Phase Selection Optimizes Active/Sleep Efficiency pation and bulk output capacitance requirements and allows ideal positioning compensation for tantalum, Transient Phase Overlap Reduces Output polymer, or ceramic bulk output capacitors. Capacitance Integrated Boost Switches A slew-rate controller allows controlled transitions between VID codes, controlled soft-start and shutdown, and con- Active Voltage Positioning with Adjustable Gain trolled exit from suspend. A thermistor-based temperature Programmable 200kHz to 800kHz Switching sensor provides a programmable thermal-fault output Frequency (VRHOT). A current monitor output (IMON) provides an Accurate Current Balance and Current Limit analog current output proportional to the power consumed Adjustable Slew-Rate Control by the CPU (MAX17082/MAX17482 only). Output under- Power-Good, Clock Enable, and Thermal-Fault voltage, overvoltage (MAX17021/MAX17082 only), and Outputs thermal protection shut the controller down when any of these faults are detected. A voltage-regulator power-OK Phase Current Imbalance Fault Output (PWRGD) output indicates the output is in regulation. Drives Large Synchronous Rectifier MOSFETs Additionally, the MAX17021/MAX17082/MAX17482 fea- 4V to 26V Battery Input-Voltage Range ture true differential current sense and a phase-good Undervoltage and Thermal-Fault Protection (PHASEGD) output that indicates a phase imbalance fault condition. Overvoltage Protection (MAX17021/MAX17082) Soft-Startup and Soft-Shutdown The MAX17021 supports the IMVP-6+ specification while the MAX17082/MAX17482 support the IMVP-6.5 requirements. The MAX17021/MAX17082/MAX17482 Pin Configuration are available in a 5mm x 5mm, 40-pin TQFN package. Applications TOP VIEW IMVP-6+/IMVP-6.5 Core Supply 30 29 28 27 26 25 24 23 22 21 Multiphase CPU Core Supply 31 20 PHASEGD DPRSTP (SLOW) D0 32 19 PWRGD Voltage-Positioned, Step-Down Converters 33 18 D1 CLKEN Notebook/Desktop Computers 34 17 V3P3 D2 Blade Servers 35 16 TON D3 MAX17021 36 15 D4 PSI (MAX17082) 14 D5 37 MAX17482 DPRSLPVR Ordering Information 38 13 SHDN D6 *EP CSP1 39 12 CSP2 PART TEMP RANGE PIN-PACKAGE 40 11 CSN1 CSN2 MAX17021GTL+ -40C to +105C 40 TQFN-EP* + 12 3 4 5 6 7 89 10 MAX17082GTL+ -40C to +105C 40 TQFN-EP* MAX17482GTL+ -40C to +105C 40 TQFN-EP* +Denotes a lead-free(Pb)/RoHS-compliant package. THIN QFN *EP = Exposed pad. () DESIGNATES MAX17082/MAX17482 PIN NAME. 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 N.C. (IMON) DH1 ILIM DL1 TIME V DD V VRHOT CC CCI DL2 FB DH2 FBAC LX2 GNDS BST2Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ABSOLUTE MAXIMUM RATINGS V , V V3P3 to GND ...........................................-0.3V to +6V DL1, DL2 to GND..........................................-0.3V to V + 0.3V CC DD, DD D0D6 to GND..........................................................-0.3V to +6V BST1, BST2 to GND ...............................................-0.3V to +36V PGDIN, DPRSLPVR, PSI to GND..............................-0.3V to +6V BST1, BST2 to V .................................................-0.3V to +30V DD DPRSTP (MAX17021) to GND..................................-0.3V to +6V LX1 to BST1..............................................................-6V to +0.3V SLOW (MAX17082/MAX17482) 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 40-Pin 5mm x 5mm TQFN Up to +70C.....................1778mW FB, FBAC to GND .........................................-0.3V to V + 0.3V (derate above +70C) ............................................22.2mW/C CC TIME, CCI to GND.........................................-0.3V to V + 0.3V Operating Temperature Range .........................-40C to +105C CC IMON to GND (MAX17021/MAX17082)........-0.3V to V + 0.3V Junction Temperature......................................................+150C CC GNDS to GND .......................................................-0.3V to +0.3V Storage Temperature Range .............................-65C to +165C SHDN to GND (Note 1)...........................................-0.3V to +16V Lead Temperature (soldering, 10s) .................................+300C TON to GND ...........................................................-0.3V to +30V 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 MAX17082/MAX17482: CSN1 CSP2 CSN1 FBAC V = 5V MAX17021: DPRSTP = GND T = 0C to +85C, unless otherwise noted. Typical values are at T = +25C.) SLOW A 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 MAX17021 IMVP-6+ 1.194 1.200 1.206 Boot Voltage V V BOOT MAX17082/MAX17482 IMVP-6.5 1.094 1.100 1.106 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 MAX17021/MAX17082/MAX17482