ROHM Develops Intelligent Power Management LSI for Portable DVD Players
ROHM Co. Ltd. has recently completed development of what it claims is the industry’s first 6ch. Power Management LSI (BD8611EFV) with an integrated protective function and startup sequence for portable DVD players. The new product is claimed to ensure high reliability for set systems used in battery-driven equipment including portable DVD players.
Portable equipment such as DVD players or NAVI require multiple power supply voltages for main chip sets, (e.g. DSP), amplifiers, LCD panels, or drivers, which typically are built-up from independent power supply ICs or in combination with semi integrated power supply ICs with discrete protective circuits. Protective circuits for those power supplies are individually provided, however, if any of the power supplies malfunction, other circuits can be affected depending on system configurations. For example, the malfunction of a single circuit block causes other circuit blocks to malfunction leading to a fatal destruction of the whole set system.
The Power Management LSI (BD8611EFV) incorporates a 6ch power supply system and integrated protective circuit in a single chip providing protection of the system from various power supply failures while enhancing the reliability of system sets. BD8611EFV detects irregular rise or drop-in output voltages, failure in the startup sequence, shorted output, or disconnected parts of all systems resulting in shutting down all the systems even if the power supply process malfunctions. It also incorporates a power supply startup sequence.
Integrating a startup sequence is essential for the multi-block circuits and processor cores such as DSP and I/O which require different voltages (1.8V- I/O, 3.3V- DSP core) and sensitive power-up timing sequences, and BD9611EFV LSI allows a substantial reduction in the power system development phase enhancing system reliability.
ROHM offers an extensive lineup of intelligent power management LSIs including BD8611EFV with multi-power supply channel configuration voltages, output current, and packages applicable to portable equipment and circuits.
Sample delivery of BD8611EFV will start in March 2007 (at a sample price of 1,000 yen). Mass production will start in June 2007.
