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PM6600评估板STEVAL-ISA056V1

制  造  商:ST意法半导体

商品编号:STEVAL-ISA056V1

价       格:

¥1062.56(含16%增值税)

数       量:

说       明:

由武汉力源信息技术股份有限公司 发货

Description

This evaluation board based on the PM6600 consists of a high efficiency monolithic boost converter and six controlled current generators (rows) specifically designed to supply LEDs arrays used in the backlight of LCD panels. The device can manage an output voltage up to 36 V (i.e. ten white-LEDs per row).

The generators can be externally programmed to sink up to 30 mA and can be dimmed via a PWM signal (1% dimming duty-cycle at 20 kHz can bemanaged). The device allows to detect and manage the open and shorted LED faults and to let unused rows floating. Basic protections (output over-voltage, internal MOSFET overcurrent and thermal shutdown) are provided.

Features
■ Boost section
– 4.5 V to 28 V input voltage range
– Internal Power MOSFET
– Internal +5 V LDO for device supply
– Up to 36 V output voltage
– Constant frequency peak current-mode ctrl
– 200 kHz to 1 MHz adjustable switching frequency
– External sync for multi-device application
– Pulse-skip power saving mode at light load
– Programmable soft-start
– Programmable OVP protection
– Single ceramic output capacitor
– Latched thermal shutdown
■ Backlight driver section
– Six rows with 30mA maximum current capability (adjustable)
– Up to 10 W LEDs per row
– Rows disable option
– Less than 500 ns minimum dimming time (1% minimum dimming duty-cycle at 20 kHz dimming frequency)
– ±2.0% current matching between rows
– LED failure (open and short circuit) detection

Pictures

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