Analog Devices / Maxim Integrated MAX17673AEVKIT Evaluation Kit

Analog Devices Inc. MAX17673AEVKIT Evaluation Kit provides a demonstration and development platform for the MAX17673A Power Management IC (PMIC). The MAX17673A integrates a 60V High Voltage (HV), high efficiency, synchronous DC-DC buck regulator and two 5.5V Low Voltage (LV), high-efficiency synchronous DC-DC buck regulators. All three regulators offer integrated power MOSFETs.

The MAX17673AEVKIT Evaluation Kit is preset for 5.0V output at a load current of up to 1.5A from the High Voltage (HV) buck converter, and 3.3V and 1.8V outputs at load currents up to 1A each from the Low Voltage (LV) buck converters. The HV buck converter is programmed to operate at 400kHz, and the LV buck converters are programmed to operate at 2MHz, for optimum efficiency and component sizes. The output of the HV buck converter is connected to the input of the LV buck converters. The EV kit features adjustable input undervoltage lockout, soft-start for the HV buck converter, and power- OK (POK_) signals for all three buck converters.

Features

Three synchronous DC-DC buck converter outputs from a single HV input
Wide 7V to 60V input range for HV buck converter
Optional external supply input connections for LV buck converters (4.5V to 5.5V for LVA, and 2.7V to 5.5V for LVB)
Programmed 5V/1.5A output for HV buck converter and 3.3V/1A and 1.8V/1A output for LV buck converters
400kHz switching frequency for HV buck converter and 2MHz switching frequency for LV buck converters
High 93% efficiency (V_INH = 12V, V_OUT = 5V at 0.45A) for HV buck converter; 94% efficiency (V_IN = 5V, V_OUT = 3.3V at 0.5A) for LV buck converters
Enable/UVLO input, resistor-programmable UVLO threshold for HV buck converter

Programmed 1ms soft-start time for HV buck converter, and internal 4096 clock cycles soft-start time for LV buck converters
Selectable PWM and PFM modes of operation
External clock synchronization
Independent Power-OK (POK_) outputs for the three buck converters
Overcurrent and over-temperature protection
Low-profile, surface-mount components
Proven PCB layout
Fully assembled and tested
Complies with CISPR 22 (EN 55022) class B conducted and radiated emissions limits

Required Equipment

One 3A, 0 to 60V_DC power supply
Two load resistors capable of sinking up to 1A at 3.3V and 1.8V, respectively

One load resistor capable of sinking up to 0.3A at 5V
Digital multimeters (DMM)

Analog Devices / Maxim Integrated MAX17673AEVKIT Evaluation Kit

Features

Required Equipment

Board Layout & BOM

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