Maxim Introduces 40V DC-DC Converter with Integrated Switch
Maxim Integrated Products introduces the MAX15020 high-voltage dc-dc converter capable of delivering up to 2A of output current, while operating with switching frequencies up to 500kHz. The high switching frequency, along with the integrated high-side switch (0.18Ω), is said to reduce the number and size of external components required by the total solution, thus saving board space and reducing system cost. Operating over a wide 7.5 to 40V input-voltage range, the MAX15020 is suitable for automotive, industrial, and printer applications.
The MAX15020 utilizes a feed-forward voltage-mode architecture to provide good noise immunity in high-voltage switching environments, and it allows external compensation for increased design flexibility. This converter offers internal switching frequencies of 300 and 500kHz, or it can be synchronized to an external clock ranging from 100 to 500kHz. To maximize flexibility, the MAX15020 allows designers to set the output voltage using two external resistors. An external reference input also provides the capability of dynamically adjusting the output voltage from 0.5 to 36V.
The MAX15020 provides protection features including configurable undervoltage lockout (UVLO), soft-start, thermal shutdown, cycle-by-cycle current limit, and a hiccup-mode for output short-circuit protection. To save power during non-operation, the device offers a shutdown mode that reduces current consumption down to only 6µA.
The MAX15020 is fully specified over the -40 to +125°C automotive temperature range and is available in a thermally enhanced, 5mm x 5mm, 20-pin TQFN package. Prices start at $1.47 (1000-up FOB USA).
