onsemi NCV1034DR2G

The NCV1034 is a high voltage PWM controller designed for high performance synchronous Buck DC/DC applications with input voltages up to 100 V. The NCV1034 drives a pair of external N−MOSFETs. The switching frequency is programmable from 25 kHz up to 500 kHz allowing the flexibility to tune for efficiency and size. A synchronization feature allows the switching frequency to be set by an external source or output a synchronization signal to multiple NCV1034 controllers. The output voltage can be precisely regulated using the internally trimmed 1.25 V reference voltage for low voltage applications. Protection features include user programmable undervoltage lockout and hiccup current limit.

• High Voltage Operating up to 100 V
• Programmable Switching Frequency up to 500 kHz
• 2 A Output Drive Capability
• Precision Reference Voltage (1.25 V)
• Programmable Soft−Start with Prebiased Load Capability
• Programmable Overcurrent and Undervoltage Protection
• Hiccup Current Limit Using MOSFET RDS(on) Sensing
• External Frequency Synchronization
• NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
• These Devices are Pb−Free and are RoHS Compliant

• 48 V Non−Isolated DC−DC Converter
• Embedded Telecom Systems
• Networking and Computing Voltage Regulator
• Distributed Point of Load Power Architectures
• General High Voltage DC−DC Converters