LTM4633 - Triple 10A Step-Down DC/DC µModule Regulator

1 LTM463314633fFor more information applicaTion FeaTuresDescripTionTriple 10A Step-Down DC/DC Module Regulator The LT M 4633 Module (micromodule) Regulator com-bines three complete 10A switching mode DC/DC con-verters into one small package. Included in the package are the switching controllers, power FETs, inductors, and most support components. The LTM4633 s three regula-tors operate from to 16V input rail(s) or to 16V with an external 5V bias. The VOUT1 and VOUT2 output range is to , while the VOUT3 output range is to Each output is set by one external switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The device supports frequency synchronization, multiphase parallel operation of VOUT1 and VOUT2, soft-start and output voltage tracking for supply rail protection features include overvoltage protection, overcurrent protection and temperature monitoring.

2 The power module is offered in a space saving, thermally enhanced 15mm 15mm BGA package. The LTM4633 is RoHS compliant with Pb-free Input to , and Output RegulatorEfficiency vs Load CurrentapplicaTionsn Three Independent 10A DC Output Current Regulator Channelsn Input Voltage Range: to 16V n to 16V with External 5V Biasn VOUT1,2 Voltage Range: to VOUT3 Voltage Range: to Maximum Total DC Output Errorn Current Mode Control/Fast Transient Responsen Frequency Synchronizationn Output Overvoltage and Overcurrent Protectionn Multiphase Operation with Current Sharing on VOUT1 and VOUT2n General Purpose Temperature Monitorsn Soft-Start/Voltage Trackingn Power Good Monitorsn 15mm 15mm BGA Packagen Telecom, Networking and Industrial Equipmentn High Density Point of Load RegulationL, LT, LTC, LTM, Module, PolyPhase, Burst Mode, Linear Technology and the Linear logo are registered trademarks and PowerPath and LTpowerCAD are trademarks of Linear Technology Corporation.

3 All other trademarks are the property of their respective owners. Protected by Patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066, 6580258 and 8163643. Other patents TA01aGNDMODE/PLLINSGNDVIN112 VINVIN2 VIN3 LTM4633 INTVCCEXTVCCFREQ/PLLLPFLOAD CURRENT (A)0 EFFICIENCY (%)85909584633 TA01b807570123456791012 VIN, OUTPUT12 VIN, OUTPUT12 VIN, 1V OUTPUTLTM463324633fFor more information conFiguraTionabsoluTe MaxiMuM raTingsCNTL_PWR .. to 18 VVIN1, VIN2, VIN3 .. to 18 VVOUT1, VOUT2 .. to .. to Voltage (SW1, SW2 and SW3) .. 1V to 18 VMODE/PLLIN, TK/SS1, TK/SS2, TK/SS3, FREQ/PLLLPF, VFB1, VFB2, VFB3 .. to INTVCCCOMP1, COMP2, COMP3 (Note 6) .. to INTVCCRUN1, RUN2, RUN3, INTVCC, EXTVCC, PGOOD12, PGOOD3 .. to 6 VTEMP1, TEMP2.

4 To Peak Output Current ..75mAOperating Junction Temperature Range(Note 2) .. 55 C to 125 CStorage Temperature Range .. 55 C to 125 CPeak Solder Reflow Body Temperature ..245 C(Note 1)1 ABCDEFSW3 TEMP2 GHJKLMGNDTKSS2TK/SS1TK/SS3 VFB3 VFB2 VFB1 FREQ/PLLLPFSGNDVIN1SW1SW2 VIN2 VIN3 VOUT3 TOP VIEWBGA PACKAGE 144 LEAD (15mm 15mm )VOUT2 VOUT1 GNDGNDCOMP3 COMP2 COMP1 PGOOD12 PGOOD3 EXTVCCGNDGNDGNDGNDGND23456789101112 TEMP1 INTVCCCNTL_PWRMODE/PLLINRUN1 RUN2 RUN3 TJMAX = 125 C, JA = C/W, JCbottom = 4 C/W, JCtop = 5 C/W JA DERIVED FROM 95mm 76mm PCB WITH 4-LAYER, WEIGHT = VALUES DETERMINED PER JESD 51-12orDer inForMaTionLEAD FREE FINISHTRAYPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGE (NOTE 2)LTM4633EY#PBFLTM4633EY#PBFLTM4633Y144- Lead (15mm 15mm ) BGA 40 C to 125 CLTM4633IY#PBFLTM4633IY#PBFLTM4633Y144-L ead (15mm 15mm ) BGA 40 C to 125 CLTM4633 MPY#PBFLTM4633 MPY#PBFLTM4633Y144-Lead (15mm 15mm )

5 BGA 55 C to 125 CConsult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping more information on lead free part marking, go to: This product is only offered in trays. For more information go to: more information characTerisTics The l denotes the specifications which apply over the specified internal operating temperature range (Note 2), otherwise specifications are at TA = 25 C. VIN = 12V, per the typical application for each Regulator DC Voltage CNTL_PWR Powered from Separate Supply (5V to 16V Range) Powered Tied to VIN (RANGE)Output Voltage Range VOUT1, VOUT2 Output Voltage Range VOUT3 l VVOUT(DC)Output Voltage, Total Variation with Line and Load, VOUT1, VOUT2, VOUT3 CIN = 22 F 3, COUT = 100 F Ceramic 3, RFB = 69k, MODE/PLLIN = 0V, VIN = to 16V, IOUT = 0A to 10A (Note 4) SpecificationsVRUNRUN1, RUN 2, RUN 3 Pin ON ThresholdVRUN (HYS)RUN Pin Hysteresis175mVIQ(VIN)Input Supply Bias Current Each ChannelVOUT = , Burst Mode Operation VOUT = , Pulse-Skipping Mode VOUT = , Switching Continuous Shutdown, RUN = 1 45 50mA mA mA AIS(VIN)

6 Input Supply Current Each ChannelVOUT = , IOUT = SpecificationsIOUT(DC)Output Continuous Current Range Each ChannelVOUT = (Note 4)010A VOUT(LINE) VOUTLine Regulation Accuracy per ChannelVOUT = , VIN from to 16V IOUT = 0A, CNTL_PWR = VOUT(LOAD) VOUTLoad Regulation Accuracy per ChannelVOUT = , IOUT = 0A to 10A (Note 4) (AC)Output Ripple Voltage per ChannelIOUT = 0A, COUT = 100 F Ceramic 3, VOUT = VOUT(START)Turn-On Overshoot per ChannelCOUT = 100 F Ceramic 3, VOUT = , IOUT = 0A20mVtSTARTTurn-On Time per ChannelCOUT = 100 F Ceramic 3, No Load, TK/SS = F 6msVOUTLSPeak Deviation for Dynamic Load per ChannelLoad: 0% to 50% to 0% of Full Load, COUT = 100 F Ceramic 3, VOUT = Typical Bench Data100mVtSETTLES ettling Time for Dynamic Load Step per ChannelLoad.

7 0% to 50% to 0% of Full Load, COUT = 100 F Ceramic 3, VOUT = Typical Bench Data 40 sIOUT(PK)Output Current Limit per ChannelVOUT = SpecificationsVFBV oltage at VFB Pin per ChannelIOUT = 0A, VOUT = IOUT = 0A, VOUT = VIFBC urrent at VFB Pin per Channel(Note 3) 10 50nAVOVLF eedback Overvoltage Lockout per Pin Soft-Start Pull-Up Current per ChannelTK/SS = AtON(MIN)Minimum On-Time(Note 3)90nsMax DCMaximum Duty to 2V at 10A, to 5V at 0A (Note 6)100%LTM463344633fFor more information characTerisTics The l denotes the specifications which apply over the specified internal operating temperature range (Note 2), otherwise specifications are at TA = 25 C.

8 VIN = 12V, per the typical application for each Regulator Between VOUT and VFB VPGOODPGOOD Trip Level PGOOD12 PGOOD3 VFB With Respect to Set Output VFB Ramping Negative VFB Ramping Positive % %VPGLPGOOD Voltage LowIPGOOD = Linear RegulatorVINTVCCI nternal VCC VoltageFloat MODE/PLLIN6V < VIN < Load RegINTVCC Load RegulationICC = 0mA to Switchover VoltageEXTVCC Ramping EXT EXTVCC Voltage DropICC = 20mA, VEXTVCC = 5V3075mVVLDOHYS EXTVCC Hysteresis200 mVOscillator and Phase-Locked LoopfSYNCSYNC Capture RangeClock Input Duty Cycle = 50% 600750kHzfSSwitching FrequencyVFREQ/PLLLPF = INTVCC700750800kHzRMODE/PLLINMODE/PLLIN Input Resistance 250k VIH(MODE/PLLIN)Clock Input Level (MODE/PLLIN)Clock Input Level PhaseVOUT2 to VOUT1 Phase VOUT3 to VOUT2 Phase VOUT1 to VOUT3 PhaseVFREQ/PLLLPF = (Note 3)120 120 120 Deg Deg DegVTEMP1,2 Temperature Diode Forward VoltageITEMP = 100 A at 25 VTEMPT emperature Coefficient CNote 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.

9 Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTM4633 is tested under pulsed load conditions such that TJ TA. The LTM4633E is guaranteed to meet performance specifications over the 0 C to 125 C internal operating temperature range. Specifications over the 40 C to 125 C internal operating temperature range are assured by design, characterization and correlation with statistical process controls. The LTM4633I is guaranteed to meet specifications over the 40 C to 125 C internal operating temperature range. The LTM4633MP is guaranteed and tested to meet specifications over the 55 C to 125 C internal operating temperature range. Note that the maximum ambient temperature consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal resistance and other environmental 3: 100% tested at wafer 4: See output current derating curves for different VIN, VOUT and 5: Guaranteed by 6.

10 High duty designs need to be validated based on maximum temperature rise and derating in ambient more information perForMance characTerisTics12V to 1V Load Step ResponseLight Load Efficiency12V to Load Step Response12V to Load Step Response12V to Load Step Response12V to Load Step Response5V Input Efficiency8V Input Efficiency12V Input Efficiency5 VIN TO (700kHz)5 VIN TO (700kHz)5 VIN TO 1V (700kHz)4633 G015 VIN TO (700kHz)5 VIN TO (700kHz)5 VIN TO (700kHz)LOAD CURRENT (A)0 EFFICIENCY (%)949698888909286848212345679108 VIN TO (700kHz)8 VIN TO (700kHz)8 VIN TO 1V (700kHz)4633 G028 VIN TO 5V (700kHz)8 VIN TO (700kHz)8 VIN TO (700kHz)8 VIN TO (700kHz)LOAD CURRENT (A)0 EFFICIENCY (%)94969888890928684828078123456791012 VIN TO (700kHz)12 VIN TO (700kHz)12 VIN TO 1V (700kHz)4633 G0312 VIN TO 5V (700kHz)12 VIN TO (700kHz)12 VIN TO (700kHz)12 VIN TO (700kHz)LOAD CURRENT (A)0 EFFICIENCY (%)