LTM4660
Info : RECOMMENDED FOR NEW DESIGNS
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LTM4660

60V, 300W Hybrid Step-Down μModule Bus Converter

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $70.17
Features
  • Input Voltage Range: 30V to 60V (65V Abs. Max.)
  • Wide Output Voltage: 4.5V to 18V (VOUT < VIN/2)
  • 97.3% Peak Efficiency (12VOUT at 15A, 48VIN)
  • ±1.5% Maximum Total DC Output Error
  • Up to 300W Output Power
  • Scalable: Parallel LTM4660s for Higher Power
  • Fixed Frequency Current Mode Control
  • Phase-Lockable External Synchronization from 200kHz to 1MHz
  • Low Start-Up Inrush Current with Flying Capacitor Voltage-Balancing Prior to DC/DC Switching Action
  • Output Voltage Tracking with Soft-Start
  • Short-Circuit Protection with Adjustable Retry-Timer
  • Overcurrent and Overtemperature Protection
  • Onboard Diode Temperature Monitor
  • Optional External Reference Input
  • Power Good and FAULT Indicators
  • 16mm × 16mm × 10.34mm BGA Package
Additional Details
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The LTM4660 is a complete 300W output switching mode hybrid-topology step-down DC/DC μModule® (micromodule) nonisolated bus converter. Its exposed power inductor resides on the top of the package, providing an intrinsic path for heat to dissipate up and out of the module—away from one’s printed circuit board. Included in the package are the switching controller IC, power MOSFETs and supporting components. Only flying (charge-pump) capacitors, bulk input and output bypass capacitors, and a few configuration passives are needed.

The LTM4660 features frequency synchronization, Burst Mode® operation and output voltage soft-start and tracking. An onboard temperature diode is available for temperature monitoring. The LTM4660 protects against short-circuit, overcurrent, and overtemperature faults. For higher power applications, multiple LTM4660 modules can be easily paralleled.

The LTM4660 is offered in a 16mm × 16mm × 10.34mm BGA package with RoHS compliant terminal finish.

APPLICATIONS

  • Telecom, Data Centers and Networking Equipment
  • Industrial and Test Equipment
Part Models 2
1ku List Price Starting From $70.17

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTM4660EY#PBF
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Product Lifecycle

PCN

Sep 13, 2022

- 22_0193

Laser Top Mark Conversion for uModule COP and TMSV_COP Packages

LTM4660EY#PBF

PRODUCTION

LTM4660IY#PBF

PRODUCTION

Filter by Model

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Part Models

Product Lifecycle

PCN

Sep 13, 2022

- 22_0193

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Laser Top Mark Conversion for uModule COP and TMSV_COP Packages

LTM4660EY#PBF

PRODUCTION

LTM4660IY#PBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 4

reference details image

DC2959A-C

LTM4660 | High Efficiency, PolyPhase 100A Hybrid Step-Down Power μModule Regulator 4× LTM4660, 100A

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DC2959A-C

LTM4660 | High Efficiency, PolyPhase 100A Hybrid Step-Down Power μModule Regulator 4× LTM4660, 100A

LTM4660 | High Efficiency, PolyPhase 100A Hybrid Step-Down Power μModule Regulator 4× LTM4660, 100A

Product Detail

Demonstration circuit 2959A-C is a high-efficiency, high-power-density hybrid step-down converter. It can deliver 12V/100A with an input voltage from 36V to 60V (up to 65V during transients). This demo board features PolyPhase® design using the LTM®4660, which uses an architecture that merges soft-switching switched capacitor topology with a traditional step-down converter to provide superior efficiency compared to the traditional switching architectures. It offers a high efficiency/high density and cost-effective solution for nonisolated intermediate bus applications in power distribution, datacom, and telecom.

The LTM4660 on DC2959A-C always operates in continuous conduction mode. The switching frequency can be programmed through a resistor or can be synchronized to an external clock signal. Due to its current mode control architecture, excellent current sharing and low output voltage ripple are achievable in the multiphase configuration. Other benefits include low Electromagnetic Interference (EMI) emissions due to a soft-switched front end and reduced MOSFET stress.

The LTM4660 monitors system voltage, current, and temperature for faults. It stops switching and pulls the FAULT pin low when a fault condition occurs. An onboard timer can be set for appropriate restart/retry times. Additional features include ±1.5% output voltage accuracy over temperature, a power good output signal, short-circuit protection, monotonic output voltage start-up, optional external reference, undervoltage lockout, and internal charge balance circuitry.

The LTM4660 data sheet must be used in conjunction with this demo board manual.

reference details image

DC2959A-A

LTM4660 | High Efficiency, PolyPhase 50A Hybrid Step-Down Power μModule Regulator 2× LTM4660, 50A

zoom

DC2959A-A

LTM4660 | High Efficiency, PolyPhase 50A Hybrid Step-Down Power μModule Regulator 2× LTM4660, 50A

LTM4660 | High Efficiency, PolyPhase 50A Hybrid Step-Down Power μModule Regulator 2× LTM4660, 50A

Product Detail

Demonstration circuit 2959A-A is a high efficiency, high power density hybrid step-down converter. It can deliver 12V/50A with an input voltage from 36V to 60V (up to 65V during transients). This demo board features PolyPhase® design using the LTM®4660, which uses an architecture that merges soft-switching switched capacitor topology with a traditional step-down converter to provide superior efficiency compared to the traditional switching architectures. It offers a high efficiency/high density and cost-effective solution for nonisolated intermediate bus applications in power distribution, datacom, and telecom.

The LTM4660 on DC2959A-A always operates in continuous conduction mode. The switching frequency can be programmed through a resistor or can be synchronized to an external clock signal. Due to its current mode control architecture, excellent current sharing and low output voltage ripple are achievable in the multiphase configuration. Other benefits include low EMI emissions due to a soft-switched front end and reduced MOSFET stress.

The LTM4660 monitors system voltage, current, and temperature for faults. It stops switching and pulls the FAULT pin low when a fault condition occurs. An onboard timer can be set for appropriate restart/retry times. Additional features include ±1.5% output voltage accuracy over temperature, a power good output signal, short-circuit protection, monotonic output voltage start-up, optional external reference, undervoltage lockout, and internal charge balance circuitry.

The LTM4660 data sheet must be used in conjunction with this demo board manual.

All registered trademarks and trademarks are the property of their respective owners.

reference details image

DC2959A-B

LTM4660 | High Efficiency, PolyPhase 75A Hybrid Step-Down Power μModule Regulator 3× LTM4660, 75A

zoom

DC2959A-B

LTM4660 | High Efficiency, PolyPhase 75A Hybrid Step-Down Power μModule Regulator 3× LTM4660, 75A

LTM4660 | High Efficiency, PolyPhase 75A Hybrid Step-Down Power μModule Regulator 3× LTM4660, 75A

Product Detail

Demonstration circuit 2959A-B is a high efficiency, high power density hybrid step-down converter. It can deliver 12V/75A with an input voltage from 36V to 60V (up to 65V during transients). This demo board features PolyPhase® design using the LTM4660, which uses an architecture that merges soft-switching switched capacitor topology with a traditional step-down converter to provide superior efficiency compared to the traditional switching architectures. It offers a high efficiency/high density and cost-effective solution for nonisolated intermediate bus applications in power distribution, datacom, and telecom.

The LTM4660 on DC2959A-B always operates in continuous conduction mode. The switching frequency can be programmed through a resistor or can be synchronized to an external clock signal. Due to its current mode control architecture, excellent current sharing and low output voltage ripple are achievable in the multiphase configuration. Other benefits include low EMI emissions due to a soft-switched front end and reduced MOSFET stress.

The LTM4660 monitors system voltage, current, and temperature for faults. It stops switching and pulls the FAULT pin low when a fault condition occurs. An onboard timer can be set for appropriate restart/retry times. Additional features include ±1.5% output voltage accuracy over temperature, a power good output signal, short-circuit protection, monotonic output voltage start-up, optional external reference, undervoltage lockout, and internal charge balance circuitry.

The LTM4660 data sheet must be used in conjunction with the demo board manual.

reference details image

DC2879A

LTM4660 | High Density Hybrid Step-Down Synchronous Converter

zoom

DC2879A

LTM4660 | High Density Hybrid Step-Down Synchronous Converter

LTM4660 | High Density Hybrid Step-Down Synchronous Converter

Product Detail

Demonstration circuit 2879A is a high efficiency, high power density hybrid converter. It can deliver 12V/25A with an input voltage from 36V to 60V (up to 65V during transients). This demo board features the LTM4660, which uses an architecture that merges soft-switching switched capacitor topology with a traditional step-down converter to provide superior efficiency compared to the traditional switching architectures. It offers a high efficiency/high density and cost effective solution for nonisolated intermediate bus applications in power distribution, datacom and telecom.

Due to its current mode control architecture, multiple LTM4660s can be operated in a parallel, multiphase configuration with excellent current sharing and low output voltage ripple to enable much higher power applications. Other benefits include low EMI emissions due to a soft-switched front end and reduced MOSFET stress.

The LTM4660 design eliminates the inrush current typically associated with switched capacitor circuits by pre-balancing the capacitors on start-up. The LTM4660 also monitors system voltage, current and temperature for faults. It stops switching and pulls the FAULT pin low when a fault condition occurs. An onboard timer can be set for appropriate restart/retry times.

Additional features include ±1.5% output voltage accuracy over temperature, a clock output for multiphase operation, a power good output signal, short-circuit protection, monotonic output voltage start-up, optional external reference, undervoltage lockout and internal charge balance circuitry.

The LTM4660 data sheet must be used in conjunction with this demo board manual.

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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