Analog Devices Inc. LTM4700 µModule® Regulators

Analog Devices LTM4700 µModule® Regulators are dual 50A or single 100A power module DC/DC regulator. These devices feature remote configurability and telemetry monitoring of power management parameters over PMBus, an open standard I²C-based digital interface protocol. The LTM4700 is comprised of fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors, and supporting components.

The LTM4700’s 2-wire serial interface allows outputs to be margined, tuned, and ramped up and down at programmable slew rates with sequencing delay times. Input and output currents, voltages, output power, temperatures, uptime, and peak values are readable. Custom configuration of the EEPROM contents is not required. At start-up, output voltages, switching frequency, and channel phase angle assignments can be set by pin-strapping resistors.

The LTM4700 is offered in a 15mm x 22mm x 7.87mm BGA package available with SnPb or RoHS-compliant terminal finish.

Features

Dual 50A or single 100A digitally adjustable outputs with digital interface for control, compensation, and monitoring
4.5V to 16V Wide input voltage
0.5V to 1.8V Output voltage range
~90% Full load efficiency from 12V_IN to 1V_OUT at 100A
±0.5% Maximum DC output error over temperature
±3% Current readback accuracy (25°C to 125°C)
Integrated input current sense amplifier
400kHz PMBus-Compliant I²C serial interface
Supports telemetry polling rates up to 125Hz
Integrated 16-Bit ∆Σ ADC
Constant frequency current mode control

Parallel and current share multiple modules
15mm x 22mm x 7.87mm BGA Package
Readable data
- Input and output voltages, currents, and temperatures
- Running peak values, uptime, faults, and warnings
- Internal EEPROM and fault logging with ECC
Writable data and configurable parameters
- Output voltage, voltage sequencing, and margining
- Digital soft-start/stop ramp
- Optimize analog loop compensation
- OV/UV/OT, UVLO, Frequency, and phasing