Analog Devices / Maxim Integrated MAX25530 Evaluation Kit

Analog Devices Inc. MAX25530 Evaluation Kit is configured to evaluate the operation of the MAX25530 IC, which is a highly integrated power supply plus LED backlight driver for automotive TFT-LCD applications. The MAX25530 Evaluation Kit is a fully assembled and tested surface-mount PCB that provides a complete power management solution for automotive displays. The Evaluation Kit integrates one buck-boost converter, one boost converter, two gate-voltage controllers, and a boost converter that powers a quad-string LED driver.

ADI MAX25530 Evaluation Kit is able to be configured to operate in a stand-alone mode or an I²C mode. The Evaluation Kit offers an I²C interface that can operate in conjunction with the MINIQUSB+ adapter board or a third-party I²C master. The Kit also includes Windows®-compatible software that provides a simple graphical user interface (GUI) for exercising the IC’s features.

Features

Demonstrates robustness of MAX25530
2.8V to 5.5V Input range for TFT power section
4.5V to 42V Input range for LED driver section
2.2MHz or 430kHz I²C programmable boost and inverted buck-boost switching frequency with spread-spectrum option on TFT power section
2.2MHz or 440kHz I²C programmable boost frequency with spread-spectrum option on LED driver section with four 150mA LED drivers
TFT Section default output voltages (stand-alone mode)
- +6V Output at 120mA (step-up switching regulator)
- -6V Output at 100mA (inverting buck-boost switching regulator)
- +16V Output at 10mA (positive-charge pump)
- -7V Output at 10mA (negative-charge pump)

HB LED string output currents configurable for 20mA, 50mA, 100mA, 120mA or 150mA
Flexible resistor-programmable TFT output sequencing (stand-alone mode)
Demonstrates cycle-by-cycle current-limit and thermal-shutdown features on boost LED driver
Demonstrates adaptive voltage optimization on LED driver section
I²C Programmability
Dedicated GUI
Proven PCB layout and thermal design
Fully assembled and tested

Required Equipment

MAX25530 EV kit
2.8 to 5.5V, 2A DC power supply
5V to 36V, 4A DC power supply
Two digital voltmeters (DVMs)
Four series-connected HB LED strings (6 LEDs each) rated to no less than 150mA

Current probe to measure the HB LED current
MINIQUSB+ interface board with USB cable
Windows-compatible PC with a spare USB port

Analog Devices / Maxim Integrated MAX25530 Evaluation Kit

Features

Required Equipment

PCB Layout

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