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Hello, Please ask a question about LTM4613_15 Datasheet
# Example questions:
➢ What is the primary function of the track/ss pin, and how does it facilitate slave operation?
➢ What does the 'mpgm' pin do and what is explicitly cautioned against when paralleling multiple ltm4613 modules?
➢ Explain how utilizing an external supply to drvcc can improve efficiency, and under what circumstances this is beneficial.
| Part No. | LTM4613_15 |
| Manufacturer | LINER |
| Size | 520 Kbytes |
| Pages | 28 pages |
| Description | EN55022B Compliant 36VIN, 15VOUT, 8A, DC/DC Module Regulator |
Overview
The document describes the Linear Technology (now Analog Devices) LTM4613, a synchronous buck-boost DC/DC controller. It's designed for generating regulated output voltages across a wide input voltage range. It supports both continuous and discontinuous modes of operation. It is suitable for applications requiring a wide input voltage range and stable output voltage regulation.
Key Features
️· Wide Input Voltage Range: Capable of operating with a wide range of input voltages.
️· Buck-Boost Topology: Can generate output voltages above or below the input voltage.
️· Synchronous Operation: Uses internal MOSFETs for improved efficiency.
️· Adjustable Frequency: The operating frequency can be modified using an external resistor.
️· Soft-Start & Tracking: Includes soft-start functionality and output voltage tracking capabilities.
️· Margining: Programmable margining input for stress testing and margin assessment.
️· External Clock Synchronization: Allows synchronization with an external clock signal.
️· Forced Continuous/Discontinuous Mode: The FCB pin allows selection between continuous and discontinuous modes for different operating conditions.
️· Power Factor Correction: Can be used in power factor correction applications.
️· Programmable Output: Allows for programming of output voltage via external resistors.
️· Internal MOSFET Drivers: Contains internal MOSFET drivers to improve efficiency.
Pin Functions (Most Important)
️· V<sub>IN</sub> (Bank 1): Power input pins; requires input decoupling capacitors.
️· PGND (Bank 2): Power ground pins for input and output returns.
️· V<sub>OUT</sub> (Bank 3): Power output pins; requires output decoupling capacitors.
️· V<sub>D</sub>: Top FET drain pins; need high-frequency ceramic decoupling capacitors.
️· DRV<sub>CC</sub>: Connect to INTV<sub>CC</sub> (or an external supply up to 6V) to power the internal MOSFET drivers and improve efficiency.
️· INTV<sub>CC</sub>: For additional decoupling of the internal regulator.
️· PLL<sub>IN</sub>: External clock synchronization input.
️· FCB: Selects between continuous (tie to PGND) or discontinuous (tie to INTV<sub>CC</sub>) mode.
️· TRACK/SS: Output voltage tracking and soft-start.
️· MPGM: Programmable margining input; do *not* tie these pins together when paralleling LTM4613s.
️· f<sub>SET</sub>: Frequency set pin; adjust with external resistors to change the operating frequency.
Package Information
️· 133-Lead LGA package
️· Dimensions: 15mm x 15mm x 4.32mm
Key Takeaways & Important Considerations
️· Decoupling is Critical: Proper decoupling capacitors are *essential* for stable operation at both input and output.
️· DRV<sub>CC</sub> is Important: Utilize the DRV<sub>CC</sub> connection (either internally or externally) to improve efficiency.
️· MPGM for Parallel Operation: When paralleling LTM4613s, *do not* connect the MPGM pins. Each device requires its own resistor.
️· Soft-Start & Tracking: The TRACK/SS pin allows for flexibility in controlling the output voltage ramp-up and enabling tracking.
️· FCB Selection: Consider the power requirements of the application when selecting between continuous and discontinuous modes.
️· Frequency Adjustment: Adjust the f<sub>SET</sub> pin's resistor to change the switching frequency to optimize performance.
️· Synchronization: The PLL<sub>IN</sub> pin is used for external clock synchronization.
This summary should give you a good overview of the LTM4613's capabilities and design considerations. Let me know if you have any other questions.
Overview
The document describes the Linear Technology (now Analog Devices) LTM4613, a synchronous buck-boost DC/DC controller. It's designed for generating regulated output voltages across a wide input voltage range. It supports both continuous and discontinuous modes of operation. It is suitable for applications requiring a wide input voltage range and stable output voltage regulation.
Key Features
️· Wide Input Voltage Range: Capable of operating with a wide range of input voltages.
️· Buck-Boost Topology: Can generate output voltages above or below the input voltage.
️· Synchronous Operation: Uses internal MOSFETs for improved efficiency.
️· Adjustable Frequency: The operating frequency can be modified using an external resistor.
️· Soft-Start & Tracking: Includes soft-start functionality and output voltage tracking capabilities.
️· Margining: Programmable margining input for stress testing and margin assessment.
️· External Clock Synchronization: Allows synchronization with an external clock signal.
️· Forced Continuous/Discontinuous Mode: The FCB pin allows selection between continuous and discontinuous modes for different operating conditions.
️· Power Factor Correction: Can be used in power factor correction applications.
️· Programmable Output: Allows for programming of output voltage via external resistors.
️· Internal MOSFET Drivers: Contains internal MOSFET drivers to improve efficiency.
Pin Functions (Most Important)
️· V<sub>IN</sub> (Bank 1): Power input pins; requires input decoupling capacitors.
️· PGND (Bank 2): Power ground pins for input and output returns.
️· V<sub>OUT</sub> (Bank 3): Power output pins; requires output decoupling capacitors.
️· V<sub>D</sub>: Top FET drain pins; need high-frequency ceramic decoupling capacitors.
️· DRV<sub>CC</sub>: Connect to INTV<sub>CC</sub> (or an external supply up to 6V) to power the internal MOSFET drivers and improve efficiency.
️· INTV<sub>CC</sub>: For additional decoupling of the internal regulator.
️· PLL<sub>IN</sub>: External clock synchronization input.
️· FCB: Selects between continuous (tie to PGND) or discontinuous (tie to INTV<sub>CC</sub>) mode.
️· TRACK/SS: Output voltage tracking and soft-start.
️· MPGM: Programmable margining input; do *not* tie these pins together when paralleling LTM4613s.
️· f<sub>SET</sub>: Frequency set pin; adjust with external resistors to change the operating frequency.
Package Information
️· 133-Lead LGA package
️· Dimensions: 15mm x 15mm x 4.32mm
Key Takeaways & Important Considerations
️· Decoupling is Critical: Proper decoupling capacitors are *essential* for stable operation at both input and output.
️· DRV<sub>CC</sub> is Important: Utilize the DRV<sub>CC</sub> connection (either internally or externally) to improve efficiency.
️· MPGM for Parallel Operation: When paralleling LTM4613s, *do not* connect the MPGM pins. Each device requires its own resistor.
️· Soft-Start & Tracking: The TRACK/SS pin allows for flexibility in controlling the output voltage ramp-up and enabling tracking.
️· FCB Selection: Consider the power requirements of the application when selecting between continuous and discontinuous modes.
️· Frequency Adjustment: Adjust the f<sub>SET</sub> pin's resistor to change the switching frequency to optimize performance.
️· Synchronization: The PLL<sub>IN</sub> pin is used for external clock synchronization.
This summary should give you a good overview of the LTM4613's capabilities and design considerations. Let me know if you have any other questions.
| Part No. | LTM4613_15 |
| Manufacturer | LINER |
| Size | 520 Kbytes |
| Pages | 28 pages |
| Description | EN55022B Compliant 36VIN, 15VOUT, 8A, DC/DC Module Regulator |
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