Datasheet LTM4620 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Dual 13A or Single 26A DC/DC µModule Regulator |
| Pages / Page | 40 / 1 — FEATURES. DESCRIPTION. Complete Standalone Dual Output Power Supply. Dual … |
| File Format / Size | PDF / 721 Kb |
| Document Language | English |
FEATURES. DESCRIPTION. Complete Standalone Dual Output Power Supply. Dual 13A or Single 26A Output
Model Line for this Datasheet
Text Version of Document
LTM4620 Dual 13A or Single 26A DC/DC µModule Regulator
FEATURES DESCRIPTION
n
Complete Standalone Dual Output Power Supply
The LTM®4620 is a complete dual 13A output switching n
Dual 13A or Single 26A Output
mode DC/DC power supply. Included in the package are n
Wide Input Voltage Range: 4.5V to 16V
the switching controller, power FETs, inductors, and all n
Output Voltage Range: 0.6V to 2.5V
supporting components. Operating from an input voltage n
±1.5% Maximum Total DC Output Error
range of 4.5V to 16V, the LTM4620 supports two outputs n
Multiphase Current Sharing with Multiple
each with an output voltage range of 0.6V to 2.5V, set by a
LTM4620s Up to 100A
single external resistor. Its high efficiency design delivers n Differential Remote Sense Amplifier up to 13A continuous current for each output. Only a few n input and output capacitors are needed. Current Mode Control/Fast Transient Response n Adjustable Switching Frequency The device supports frequency synchronization, multi- n Overcurrent Foldback Protection phase operation, Burst Mode operation and output voltage n Frequency Synchronization tracking for supply rail sequencing and has an onboard n Internal Temperature Monitor temperature diode for device temperature monitoring. n Output Overvoltage Protection High switching frequency and a current mode architec- n SnPb or RoHS Compliant Finish ture enable a very fast transient response to line and load n Thermally Enhanced (15mm × 15mm × 4.41mm) LGA changes without sacrificing stability. Package and (15mm × 15mm × 5.01mm) BGA Package Fault protection features include overvoltage and overcurrent protection. The power module is
APPLICATIONS
offered in a proprietary space saving and thermal y n enhanced 15mm × 15mm × 4.41mm LGA pack- Telecom and Networking Equipment n age and 15mm × 15mm × 5.01mm BGA package, Storage and ATCA Cards n with integrated top-side heat sink. The LTM4620 is avail- Industrial Equipment able with SnPb (BGA) or RoHS compliant terminal finish. L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule, Burst Mode, LTpowerCAD and PolyPhase are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
Click to view associated TechClip Videos. TYPICAL APPLICATION 26A, 1.2V Output DC/DC µModule
®
Regulator
INTVCC
1.2V Efficiency vs I
4.7µF 5k
OUT
PGOOD MODE_PLLIN CLKOUT INTVCC EXTVCC PGOOD1 90 VIN 4.5V TO 16V VIN VOUT1 22µF + 100µF 470µF 10k* ×4 120k VOUTS1 80 6.3V 6.3V 25V TEMP DIFFOUT SW1 RUN1 70 RUN2 V LTM4620 FB1 TRACK1 VFB2 60.4k EFFICIENCY (%) 60 5.1V* TRACK2 COMP1 COMP2 0.1µF fSET 50 VOUTS2 5VIN/500kHz PHASMD V V OUT2 OUT 12VIN/500kHz 1.2V AT 26A + 121k 40 SW2 100µF 470µF 0 2 4 6 8 10 12 14 16 18 20 22 24 26 6.3V PGOOD2 6.3V OUTPUT CURRENT (A) SGND GND DIFFP DIFFN 4620 TA01b * PULL-UP RESISTOR AND PGOOD ZENER ARE OPTIONAL 4620 TA01a 4620fc For more information www.linear.com/LTM4620 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Related Parts
FEATURES DESCRIPTION
n
Complete Standalone Dual Output Power Supply
The LTM®4620 is a complete dual 13A output switching n
Dual 13A or Single 26A Output
mode DC/DC power supply. Included in the package are n
Wide Input Voltage Range: 4.5V to 16V
the switching controller, power FETs, inductors, and all n
Output Voltage Range: 0.6V to 2.5V
supporting components. Operating from an input voltage n
±1.5% Maximum Total DC Output Error
range of 4.5V to 16V, the LTM4620 supports two outputs n
Multiphase Current Sharing with Multiple
each with an output voltage range of 0.6V to 2.5V, set by a
LTM4620s Up to 100A
single external resistor. Its high efficiency design delivers n Differential Remote Sense Amplifier up to 13A continuous current for each output. Only a few n input and output capacitors are needed. Current Mode Control/Fast Transient Response n Adjustable Switching Frequency The device supports frequency synchronization, multi- n Overcurrent Foldback Protection phase operation, Burst Mode operation and output voltage n Frequency Synchronization tracking for supply rail sequencing and has an onboard n Internal Temperature Monitor temperature diode for device temperature monitoring. n Output Overvoltage Protection High switching frequency and a current mode architec- n SnPb or RoHS Compliant Finish ture enable a very fast transient response to line and load n Thermally Enhanced (15mm × 15mm × 4.41mm) LGA changes without sacrificing stability. Package and (15mm × 15mm × 5.01mm) BGA Package Fault protection features include overvoltage and overcurrent protection. The power module is
APPLICATIONS
offered in a proprietary space saving and thermal y n enhanced 15mm × 15mm × 4.41mm LGA pack- Telecom and Networking Equipment n age and 15mm × 15mm × 5.01mm BGA package, Storage and ATCA Cards n with integrated top-side heat sink. The LTM4620 is avail- Industrial Equipment able with SnPb (BGA) or RoHS compliant terminal finish. L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule, Burst Mode, LTpowerCAD and PolyPhase are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
Click to view associated TechClip Videos. TYPICAL APPLICATION 26A, 1.2V Output DC/DC µModule
®
Regulator
INTVCC
1.2V Efficiency vs I
4.7µF 5k
OUT
PGOOD MODE_PLLIN CLKOUT INTVCC EXTVCC PGOOD1 90 VIN 4.5V TO 16V VIN VOUT1 22µF + 100µF 470µF 10k* ×4 120k VOUTS1 80 6.3V 6.3V 25V TEMP DIFFOUT SW1 RUN1 70 RUN2 V LTM4620 FB1 TRACK1 VFB2 60.4k EFFICIENCY (%) 60 5.1V* TRACK2 COMP1 COMP2 0.1µF fSET 50 VOUTS2 5VIN/500kHz PHASMD V V OUT2 OUT 12VIN/500kHz 1.2V AT 26A + 121k 40 SW2 100µF 470µF 0 2 4 6 8 10 12 14 16 18 20 22 24 26 6.3V PGOOD2 6.3V OUTPUT CURRENT (A) SGND GND DIFFP DIFFN 4620 TA01b * PULL-UP RESISTOR AND PGOOD ZENER ARE OPTIONAL 4620 TA01a 4620fc For more information www.linear.com/LTM4620 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photo Related Parts
