LTM4647 30A DC/DC Step-Down Module Regulator FEATURES DESCRIPTION n 4.7V to 15V Input Voltage Range The LTM 4647 is a complete 30A output switching mode n 0.6V to 1.8V Output Voltage Range step-down DC/DC Module (power module) regulator. n 30A DC Output Current Included in the package are the switching controller, power n 1.2% Total DC Output Voltage Error (40C to 125C) FETs, inductor and all supporting components. Operating n High Reliability N + 1 Phase Redundancy Supported over an input voltage range of 4.7V to 15V, the LTM4647 n Internal or External Control Loop Compensation supports an output voltage range of 0.6V to 1.8V, set by n Differential Remote Sense Amplifier for Precision a single external resistor. Only a few input and output Regulation capacitors are needed. n Current Mode Control/Fast Transient Response Its high efficiency design delivers 87% efficiency from 12V n Multiphase Current Sharing Up to 180A input to 1.0V output with 30A continuous load current. n Built-In Temperature Monitoring High switching frequency and a current mode architecture n Selectable Pulse-Skipping, Burst Mode Operation enable a very fast transient response to line and load n Soft-Start/Voltage Tracking changes without sacrificing stability. The device supports n Frequency Synchronization frequency synchronization, programmable multiphase n Output Overvoltage Protection operation, N+1 phase redundancy, and output voltage n Output Overcurrent Foldback Protection tracking for supply rail sequencing. n 9mm 15mm 5.01mm BGA Package Fault protection features include overvoltage and overcur- rent protection. The power module is offered in a space APPLICATIONS saving 9mm 15mm 5.01mm BGA package. The n Telecom, Networking and Industrial Equipment LTM4647 is available with SnPb (BGA) or RoHS compli- n Point-of-Load Regulation ant terminal finish. L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode, Module, LTpowerCAD and PolyPhase are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 12V , 1V , 30A DC/DC Module Regulator IN OUT 1V Efficiency vs Load Current OUT 100 4.7F 1F 6.3V 2.2 95 SV DRV INTV IN CC CC V IN 90 V IN 6V TO 15V 22F HIZB 25V 85 2 FREQ LTM4647 V OUT V 1V OUT 80 43.2k 30A + COMPa V 47pF OSNS COMPb V 75 FB 100F TRACK/SS V OSNS 90.9k 6.3V 0.1F 6 70 5V INPUT* SGND GND 12V INPUT 4647 TA01a 65 PINS NOT USED IN THIS CIRCUIT: 0 5 10 15 20 25 30 CLKOUT, MODE/PLLIN, PGOOD, LOAD CURRENT (A) + PHASMD, PWM, RUN, SW, TEMP , TEMP *5V INPUT SEE FIGURE 24 4647 TA01b 4647fb 1 For more information www.linear.com/LTM4647 EFFICIENCY (%)LTM4647 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW V , SV , HIZB .......................................... 0.3V to 16V IN IN 1 2 3 4 5 6 7 V , ......................................................... 0.3V to 3.5V GND GND RUN GND OUT A CLKOUT INTV , DRV , PGOOD, RUN ..................... 0.3V to 6V CC CC V PWM IN TEST1 + B MODE/PLLIN MODE/PLLIN, TRACK/SS, V , V , OSNS OSNS DRV INTV CC CC C PHASMD CLKOUT, COMPa, COMPb, V , PHASMD, FB TEST2 SV IN FREQ ....................................................0.3V to INTV D FREQ CC GND HIZB V TEMP FB Internal Operating Temperature Range (Note 2).... 40 to E SGND TRACK/SS SW GND + TEMP 125C TEST3 F + V V OSNS OSNS Storage Temperature Range ...................... 55 to 125C G PGOOD GND COMPa Peak Solder Reflow Body Temperature ................. 250C COMPb H + TEMP , TEMP .......................................... 0.3V to 0.8V J V GND OUT K L BGA PACKAGE 77-LEAD (9mm 15mm 5.01mm) T = 125C, = 9.5C/W, = 4C/W, = 6.7C/W, = 4.5C/W J(MAX) JA JCbottom JCtop JB DERIVED FROM 95mm 76mm PCB WITH SIX LAYERS WEIGHT = 2g JA VALUES DETERMINED PER JESD51-12 ORDER INFORMATION