Step up DC/DC converter boosts efficiency
1 min read
Diodes has announced the PAM2401 – a low voltage, 1MHz step up DC/DC converter designed to meet the heightened efficiency demands of portable products such as battery backups, cordless phones and GPS receivers.
Maintaining an operational efficiency up to 95%, the synchronous converter provides true output disconnect to prevent leakage and ensures safe start up at an input of 1V.
The PAM2401 offers a programmable current limit of 1 to 3A for its lower operating voltage input range of 0.9 to 4.75V. To help maximise battery life, the device automatically enters a high efficiency pulse-skipping mode when driving light loads. In shutdown, quiescent current is less than 1µA.
By operating at a high fixed switching frequency and integrating an N-channel MOSFET switch, a P-channel synchronous rectifier and a power-good indicator into MSOP-8 and U-DFN3030-12 packages, the converter reduces the number and size of external components and overall board space requirement.
The converter also provides over voltage and over temperature protection functions, with the device's soft start circuit ensuring safe automatic restart. Other features include anti-ringing control and hiccup-mode short circuit protection.
