NCP81031
NCP81031 is Low Voltage Synchronous Buck Controller manufactured by onsemi.
Product Preview Low Voltage Synchronous Buck Controller with Power Saving and Transient Enhancement Features
The NCP81031 is a simple single phase solution with differential phase current sensing, low current power saving mode of operation, and on board gate drivers to provide accurately regulated power. It can be set up to synchronize to an external clock or PWM signal within certain frequency range.
The adaptive non overlap gate drive and power saving operation circuit provide a low switching loss and high efficiency solution for server, notebook, and desktop systems. A high performance operational error amplifier is provided to simplify pensation of the system. The NCP81031 Features include soft- start sequence, accurate overvoltage and over current protection, UVLO for VCC and VCCP, and thermal shutdown.
Features
- High Performance Operational Error Amplifier
- Internal Soft- Start/Stop
- ±0.5% internal Voltage Accuracy, 0.8 V voltage reference
- OCP accuracy, Four Re- entry Times Before Latch
- “Lossless” Differential Inductor Current Sensing
- Internal high precision current sensing amplifier
- Oscillator Frequency Range of 100 k Hz
- 1000 k Hz
- 20 ns Adaptive FET Non- overlap Time of internal Gate Driver
- 5.0 V to 12 V Operation
- Support 1.5 V to 19 V Vin
- Vout from 0.8 V to 3.3 V (5 V with 12 VCC)
- Chip enable through OSC pin
- Latched Over Voltage Protection (OVP)
- Internally fixed OCP Threshold
- Guaranteed Startup Into Pre- Charged Loads
- Thermally pensated Current Monitoring
- Thermal Shutdown Protection
- Integrated MOSFET Drivers
- Integrated BOOST diode with internal Rbst = 2.2 W
- Automatic Power Saving Mode to Maximize Efficiency During Light
Load Operation
- Sync Function
- Remote Ground Sensing
- Enhanced Transient Protection
- This is a Pb- Free...
