Overview
The LTM4700IY, produced by Analog Devices Inc., is a highly advanced dual 50A or single 100A step-down µModule (power module) DC/DC regulator. This regulator features remote configurability and telemetry-monitoring of power management parameters over PMBus, an open standard I2C-based digital interface protocol. The LTM4700IY integrates fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors, and supporting components, making it a comprehensive solution for high-power applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Output Current (Each Channel) | 50 | A | |||
| Output Current (Single Channel) | 100 | A | |||
| Input Voltage Range | 4.5V to 16V | 4.5 | 16 | V | |
| Output Voltage Range | 0.5 | 1.8 | V | ||
| Switching Frequency | 320 | 350 | 370 | kHz | |
| Turn-On Start-Up Time | VIN from 0V to 12V | 30 | ms | ||
| Turn-On Delay Time | First Rising Edge of RUNn to Rising Edge of PGOODn | 2.95 | 3.3 | 3.75 | ms |
| Peak Output Voltage Deviation for Dynamic Load Step | Load: 0A to 12.5A and 12.5A to 0A at 10A/µs, VOUTn = 1V, VIN = 12V | 55 | mV | ||
| Input Voltage Readback Accuracy | READ_VIN, 4.5V ≤ SVIN ≤ 16V | ±2% | % |
Key Features
- Remote configurability and telemetry-monitoring of power management parameters over PMBus.
- Fast analog control loops and precision mixed-signal circuitry.
- EEPROM for custom configuration, though not required for default settings.
- Output voltages, switching frequency, and channel phase angle can be set by pin-strapping resistors at start-up.
- 2-wire serial interface for output margining, tuning, and ramping with programmable slew rates and sequencing delay times.
- Readable parameters include input and output currents and voltages, output power, temperatures, uptime, and peak values.
- LTpowerPlay® GUI and DC1613 USB-to-PMBus converter and demo kits available for configuration and testing.
Applications
- Data centers and cloud infrastructure for high-power server and storage systems.
- Telecommunications equipment requiring high current and efficient power conversion.
- Industrial automation and control systems needing precise and reliable power management.
- Medical devices and equipment that demand high power density and efficiency.
- Aerospace and defense applications where robust and configurable power solutions are essential.
Q & A
- What is the maximum output current of the LTM4700IY?
The LTM4700IY can provide up to 100A in single-channel configuration or 50A per channel in dual-channel configuration.
- What is the input voltage range for the LTM4700IY?
The input voltage range is from 4.5V to 16V.
- How can the output voltages be configured?
Output voltages can be configured using pin-strapping resistors at start-up or through the PMBus interface.
- What is the switching frequency of the LTM4700IY?
The switching frequency is typically set to 350kHz but can range from 320kHz to 370kHz.
- Can the LTM4700IY be used in high-temperature environments?
The specifications apply over the specified internal operating temperature range, but specific details should be checked in the datasheet for precise temperature limits.
- How does the LTM4700IY support telemetry and monitoring?
The LTM4700IY supports telemetry and monitoring through the PMBus interface, allowing for the readback of various power management parameters.
- What tools are available for configuring the LTM4700IY?
The LTpowerPlay® GUI and DC1613 USB-to-PMBus converter and demo kits are available for configuration and testing.
- What are some common applications for the LTM4700IY?
Common applications include data centers, telecommunications equipment, industrial automation, medical devices, and aerospace and defense systems.
- How accurate is the input voltage readback on the LTM4700IY?
The input voltage readback accuracy is within ±2% of the reading for the specified input voltage range.
- What is the peak output voltage deviation for dynamic load steps?
The peak output voltage deviation for dynamic load steps is up to 55mV under specified conditions.
