R1260 Series: 60V Buck DC/DC Controller with PWM/VFM Control Modes and Synchronous Rectification

Ricoh Electronic Devices has launched a high-voltage buck DC/DC controller series, which has a wide input voltage range of 5.0 V to 60 V and maximum rating of 80 V. The R1260 Series is optimized for use in automotive and industrial applications and its output voltage is externally configurable in the range of 1.0 V to 16.0 V. Due to its high operating voltage up to 60 V, it can directly step down such a high voltage to a source voltage for devices used in automotive and industrial applications such as an MCU, an SoC and sensors. It features spread spectrum clock generator (SSCG) which suppresses the peak of radiation noise will help reduce the risk of failing to pass EMI testing and the number of components for EMI countermeasures.

The R1260 series is a controller-type IC which requires an external FET, so you can choose an optimal FET according to the usage. Besides, to convert a voltage efficiently even at light load, the IC has a function to switch VFM (Variable Frequency Modulation) and PWM (Pulse Width Modulation) modes according to load current. This enables the IC and systems to achieve high-efficiency operation at both heavy and light load conditions. Moreover, for use with safety and security, the IC includes various functional mechanisms such as under- and over-voltage protections, under-voltage lockout and thermal shutdown functions.

Features

• Direct Step-down from Input Voltage Up to 60 V, Maximum Rating of 80 V

• High-efficiency Operation at Heavy and Light Load by Automatically Switching PWM/VFM Modes

• Spread Spectrum Clock Generator (Diffusion Rate: -7.2%) for Reducing EMI Noise

Applications

• PLC

• PoE Drive Equipment

• FA Equipment

• 5G Base Station

• Industrial Equipment

Availability

The R1260 will be manufactured in Yashiro Plant (Kato City, Hyogo Prefecture). The new IC adopts lead-pin-type, easy-to-mount HSOP-18 package. In addition, it is going to be an applicable product of our Product Longevity Program, which maintains the product supply for at least 10 years. You can use the R1260 series for a long time without EOL concerns.