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LTM4650 Datasheet(PDF) 1 Page - Analog Devices |
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LTM4650 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 36 page ![]() LTM4650-2 1 Rev. 0 For more information www.analog.com Document Feedback TYPICAL APPLICATION DESCRIPTION Dual 25A or Single 50A µModule Regulator with Active Voltage Positioning The LTM®4650-2 is a dual 25A or single 50A output step- down µModule® (micromodule) regulator with ±1.5% total DC output error. The package includes the switching controller, power FETs, inductors, and all supporting com- ponents. External compensation allows for fast transient response to minimize output capacitance when powering FPGAs, ASICs, and processors. AVP can further improve transient response and reduce the output capacitance. With synchronized multiphase parallel current sharing, six LTM4650-2 devices can deliver up to 300A. The LTM4650-2 is offered in a 16mm × 16mm × 5.01mm BGA package with SnPb or RoHS-compliant terminal finish. FEATURES APPLICATIONS n Dual 25A or Single 50A Output n 4.5V to 15V Input, 0.6V to 1.8V Output Voltage Range n ±1.5% Maximum Total DC Output Error Over Line and Load n Differential Remote Sense Amplifier n Current Mode Control/Fast Transient Response n Current Sharing Up to 300A n AVP (Active Voltage Positioning) Compatible n 16mm × 16mm × 5.01mm BGA Package n FPGA, ASIC, µProcessor Core Voltage Regulation n Information, Communication Systems 1.0V Output Efficiency, fSW = 500kHz Dual 25A, 1.0V and 1.5V Outputs DC/DC μModule Regulator LOAD CURRENT (A) 0 10 20 30 40 50 65 70 75 80 85 90 95 46502 TA01b VIN = 5V VIN = 12V All registered trademarks and trademarks are the property of their respective owners. PGOOD2 R3 10k INTVCC 46502 TA01a LTM4650-2 VIN TEMP RUN1 RUN2 TRACK1 TRACK2 fSET RFB2 40.2k R2 10k PHASMD VOUT1 VOUTS1 SW1 VFB1 VFB2 COMP1 COMP2 VOUTS2 VOUT2 SW2 PGOOD2 MODE_PLLIN CLKOUT INTVCC EXTVCC PGOOD1 PGOOD1 INTVCC SGND GND TRACK1 TRACK2 DIFFN DIFFP DIFFOUT RFB1 82.6k VFB1 VOUT2 1.5V, 25A COUT3 100µF 6.3V ×5 COUT4 470µF 6.3V ×2 R4 121k R7 100k C5 0.1µF C9 0.1µF C1 22µF 25V ×4 C10 4.7µF VOUT1 1V, 25A R19 560k VFB1 + CIN 330µF 25V VIN 4.5V TO 15V INTVCC + COUT1 100µF 6.3V ×3 + R13 21k C12 47pF C13 3300pF R18 5M INTVCC COUT2 470µF 6.3V ×2 50% (12.5A) Load Step Transient Response, 12VIN, 1VOUT (with AVP) 100µs/DIV VOUT (AC) 30mV/DIV LOAD STEP 10A/DIV 46502 TA01c |
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