Summary of 5V/2A SYNCHRONOUS DC-DC CONVERTER IC EVALUATION KIT
The MAX17662BEVKITB# is a fully assembled evaluation kit for the MAX17662B high-efficiency synchronous step-down DC-DC converter. It delivers 5V/2A from a 6.5V to 36V input with a fixed 500kHz switching frequency. Designed for applications like base stations and industrial controls, it features adjustable UVLO, soft-start, and an active-low RESET signal. The PCB includes a layout optimized for EMI and thermal performance, plus an optional electrolytic capacitor for hot-plug scenarios with long cables.
Parts used in the MAX17662BEVKITB#:
- MAX17662B high-efficiency synchronous step-down dc-dc converter
- Electrolytic capacitor (C6 = 47μF/50V)
- Ceramic capacitors at the buck converter input
- Resistor for programmable UVLO threshold
The MAX17662BEVKITB# evaluation kit (EV kit) from Maxim Integrated Products provides a proven design to evaluate the MAX17662B high-efficiency, synchronous step-down dc-dc converter. The EV kit provides 5V/2A at the output from a 6.5V to 36V input supply.
Applications are expected to include base station power supplies, distributed supply regulation, general-purpose point-of-load, high-voltage single-board systems, industrial control power supplies, wall transformer regulation, and so on.
The switching frequency of the EV kit is preset to 500kHz for optimum efficiency and component size. The EV kit features adjustable input under-voltage lockout, adjustable soft-start, open-drain active-low RESET signal.
The EV kit also provides a good layout example, which is optimized for conducted, radiated EMI, and thermal performance.
Hot Plug-In and Long Input Cables
The MAX17662BEVKITB# PCB layout provides an optional electrolytic capacitor (C6 = 47μF/50V). This capacitor limits the peak voltage at the input of the MAX17662B when the dc input source is “hot-plugged” to the EV kit input terminals with long input cables. The equivalent series resistance (ESR) of the electrolytic capacitor dampens the oscillations caused by interaction of the inductance of the long input cables, and the ceramic capacitors at the buck converter input.
Summary of Key Features
- Operates from a 6.5V to 36V Input Supply
- 5V Output Voltage
- Delivers Up to 2A Output Current
- 500kHz Switching Frequency
- Enable/Undervoltage Lockout Input, Resistor- Programmable UVLO Threshold
- Adjustable Soft-Start Time
- Open-Drain Active-Low RESET Output
- Overcurrent and Overtemperature Protection
- Proven PCB Layout
- Fully Assembled and Tested
- Compliance with CISPR22(EN55022) Class B Conducted and Radiated Emissions
Read more: 5V/2A SYNCHRONOUS DC-DC CONVERTER IC EVALUATION KIT
- What output voltage and current does the EV kit provide?
The EV kit provides 5V/2A at the output. - How does the kit handle hot plug-in with long input cables?
An optional electrolytic capacitor limits peak input voltage and dampens oscillations caused by cable inductance. - Does the switching frequency require adjustment?
No, the switching frequency is preset to 500kHz for optimum efficiency and component size. - Can the input under-voltage lockout be adjusted?
Yes, the EV kit features an adjustable input under-voltage lockout. - What protection features are included in the design?
The design includes overcurrent and overtemperature protection along with an open-drain active-low RESET signal. - Is the PCB layout optimized for electromagnetic interference?
Yes, the layout is optimized for conducted, radiated EMI, and thermal performance. - What input voltage range supports this evaluation kit?
The kit operates from a 6.5V to 36V input supply.
