Nisshinbo R1260S Synchronous Step-down DC/DC Controllers
Nisshinbo R1260S Synchronous Step-down DC/DC Controllers generate an output voltage of 1V to 16V by driving external high-/low-side NMOSFETs. These controllers can form a stable DC/DC converter with high efficiency even if adding low Ron MOSFETs and a low DCR inductor externally. The R1260S DC/DC controllers use a unique current-mode PWM architecture without an external current sense resistor. These controllers are designed to provide 48V power from a wide input voltage range of 5V to 60V. The R1260S DC/DC controllers feature a high-accuracy feedback voltage of 0.8V ±1.5%. The R1260S032A-E2-KE controller is AEC-Q100 Grade 1 qualified. Typical applications include EV inverters and chargers, a 48V battery system (mild hybrid), and commercial vehicles.
Features
- 5V to 60V input voltage range
- 1V to 16V output voltage range
- 0.8V ±1.5% feedback voltage
- 15µA (typical) consumption current at no load (at VFM mode)
- 150kHz to 600kHz oscillator frequency range
- 130ns typical minimum on time
- 120ns typical minimum off time
- PWM/VFM auto-switching mode/forced PWM/PLL_PWM mode selectable output voltage controls
- Spread Spectrum Clock Generator (SSCG)
- Power good output
- Undervoltage Detection (UVD) and Overvoltage Detection (OVD)
- Undervoltage Lockout (UVLO)
- Overcurrent protection: hiccup-type and latch-type
- 160°C typical thermal shutdown
- Short-circuit Protection: LX to VIN or GND
- -40°C to 125°C operating temperature range
- AEC-Q100 Grade 1 qualified (R1260S032A-E2-KE)
Applications
- Constant voltage source for control units such as EV inverters and chargers
- 48V battery system (mild hybrid), a constant voltage source of battery management system
- Constant voltage source from a 24V battery system, such as commercial vehicles.
Application Ciruit Diagram
Block Diagram
Dimension Diagram
Associated Board
Nisshinbo R1260S Evaluation Boards
Boards are based on the R1260S DC/DC controller for industrial and automotive applications.