Evaluates: MAX17021 19-4511 Rev 0 3/09 MAX17021 Evaluation Kit General Description Features Dual-Phase, Fast-Response Interleaved, The MAX17021 evaluation kit (EV kit) demonstrates the Quick-PWM high-power, dynamically adjustable, multiphase IMVP-6.5+ notebook CPU application circuit. This Intel IMVP-6+ Code-Set Compliant DC-DC converter steps down high-voltage batteries (Montevina Socket Configuration) and/or AC adapters, generating a precision, low-volt- Dynamic Phase Selection Optimizes age CPU core V rail. The MAX17021 EV kit meets the CC Active/Sleep Efficiency Intel mobile IMVP-6+ CPUs transient voltage specifica- Transient Phase Overlap Reduces Output tion, power-good signaling, voltage regulator thermal Capacitance monitoring (VRHOT), and power-good output (PWRGD). The MAX17021 kit consists of the MAX17021 Active Voltage Positioning with Adjustable Gain 2-phase interleaved Quick-PWM step-down con- High Speed, Accuracy, and Efficiency troller. The MAX17021 kit includes active voltage posi- Low-Bulk Output Capacitor Count tioning with adjustable gain, reducing power dissipation 7V to 24V Input-Voltage Range and bulk output capacitance requirements. A slew-rate controller allows controlled transitions between VID 0 to 1.5000V Output-Voltage Range (7-Bit DAC) codes, controlled soft-start and shutdown, and con- 60A Peak Load-Current Capability (30A Each Phase) trolled exit suspend voltage. Precision slew-rate control Accurate Current Balance and Current Limit provides just-in-time arrival at the new DAC setting, minimizing surge currents to and from the battery. 300kHz Switching Frequency (per Phase) Two dedicated system inputs (PSI and DPRSLPVR) Power-Good (PWRGD) and Phase-Good dynamically select the operating mode and number of (PHASEGD) Outputs and Indicators active phases, optimizing the overall efficiency during Clock Enable (CLKEN) and Thermal Fault (VRHOT) the CPUs active and sleep states. Outputs and Indicators The MAX17021 includes latched output undervoltage- Output Overvoltage and Undervoltage Fault fault protection, overvoltage-fault protection, and ther- Protections mal-overload protection. It also includes a voltage regu- 40-Pin Thin QFN Package with Exposed Pad lator power-good (PWRGD) output, a clock enable Lead(Pb)-Free and RoHS Compliant (CLKEN) output, and a phase-good (PHASEGD) output. Fully Assembled and Tested This fully assembled and tested circuit board provides a digitally adjustable 0 to 1.5000V output voltage (7-bit on-board DAC) from a 7V to 24V battery input range. Ordering Information Each phase is designed for a 20A thermal design cur- rent, and delivers up to 30A peak output current for a PART TYPE total of 60A. The EV kit operates at 300kHz switching MAX17021EVKIT+ EV Kit frequency (per phase) and has superior line- and load- +Denotes lead(Pb)-free and RoHS compliant. transient response. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 10F 20%, 25V X5R ceramic CLKEN, capacitors (1210) DPRSLPVR, Murata GRM32DR61E106KA12L GND SENSE, C1C4 4 TDK C3225X7R1E106M PGDIN, 11 Test points AVX 12103D106M PHASEGD, PSI, Taiyo Yuden TMK325BJ106MM PWRGD, V3P3, KEMET C1210C106M3RAC VOUT SENSE, VRHOT, VR ON Quick-PWM is a trademark of Maxim Integrated Products, Inc. Maxim Integrated Products 1 For information on other Maxim products, visit Maxims website at www.maxim-ic.com.MAX17021 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 330F, 2V, 4.5m low-ESR polymer 0.36H, 36A, 0.82m power capacitors (D case) inductors C5C8 4 Panasonic EEFSX0D331E4 or L1, L2 2 Panasonic ETQP4LR36ZFJ NEC TOKIN PSGV0E337M4.5 NEC TOKIN MPC1055LR36 TOKO FDUE1040D-R36M KEMET T520V337M2R5ATE4R5 n-channel MOSFETs (PowerPAK 8 SO) Not installed, ceramic capacitor C9 0 N1, N2 2 Fairchild FDS6298 (8 SO) (0805) Vishay (Siliconix) SI4386DY 1F 10%, 16V X5R ceramic n-channel MOSFETs (PowerPAK 8 SO) capacitors (0603) N3N6 4 Fairchild FDS8670 (8 SO) C10, C11 2 TDK C1608X5R1C105K Vishay (Siliconix) SI4626ADY Taiyo Yuden EMK107BJ683MA Not installed, n-channel MOSFET Murata GRM188R61C105K N7 0 (D-PAK) Not installed, ceramic capacitors Not installed, n-channel MOSFETs (0603) N8, N9 0 C12, C20C27 0 (PowerPAK 8 SO) C12, C20C26 are open C27 is short (PC trace) R1, R15, R16, 5 10 5% resistors (0603) R43, R44 0.22F 20%, 10V X7R ceramic capacitors (0603) R2 1 59k 1% resistor (0603) C13C16, C28, Murata GRM188R71A224K R3 1 12.1k 1% resistor (0603) 6 C29 Taiyo Yuden LMK107BJ224MA R4 1 200k 1% resistor (0603) TDK C1608X7R1C224M R5, R6 2 0 resistors (0603) AVX 06033D224KAT R7, R11 2 1.21k 1% resistors (0603) 1000pF 10%, 50V X7R ceramic R8, R12 2 1.50k 1% resistors (0603) capacitors (0603) R9, R13 2 20k 1% resistors (0603) C17, C18, C19 3 TDK C1608X7R1H102K or Murata GRM188R71H102K or 10k 1% NTC thermistors, equivalent = 3380 (0603) R10, R14 2 Murata NCP18XH103F03RB 10F 20%, 6.3V X5R ceramic TDK NTCG163JH103F capacitors (0805) C30C39, 14 TDK C2012X5R0J106M or R17 1 4.32k 1% resistor (0603) C62C65 Taiyo Yuden AMK212BJ106MG Not installed, resistors (0603) R18, R24, R33, AVX 08056D106MAT 0 R18, R24, and R33 are open R34 R34, R35, and R35 are short (PC trace) 22F, 6.3V X5R ceramic capacitors (0805) R19 1 51 5% resistor (0603) C40C49 10 TDK C2012X5R0J226MT R20 0 Not installed, 1W resistor (2512) Taiyo Yuden JMK212BJ226MG R21, R22, R23, 4 1k 5% resistors (0603) 3A, 30V Schottky diodes R30 D1, D2 2 Nihon EC31QS03L R25 1 13k 1% resistor (0603) Central Semi CMSH3-40M 100k 5% NTC thermistor, LEDs, green clear SMD (0805) = 4250 (0603) D3D6 4 LITE-ON Electronics LTST-C170GKT R26 1 Murata NCP18WF104J03RB Digi-Key 160-1179-1-ND TDK NTCG163JF104J (0402) or JU1 0 Not installed, 3-pin header Panasonic ERT-J1VR104J 2 Evaluates: MAX17021