DC-DC Controller
Multiple Phase Buck Controller
uP1649Q
1/2/3/4-Phase PWM Controller with SMBus Digital Interface Control for VR12.5
Datasheets PDF
General Description
The uP1649Q is a VR12.5 compliant CPU power controller supports up to 4 phases. The integrated I2C interface programmability makes the uP1649Q high performance and easy design. Designer can define different power scenario for different current states to optimize the performance and efficiency. The uP1649Q combines true differential voltage sensing, differential inductor DCR current sensing, input voltage feed-forward and adaptive voltage positioning to provide accurately regulated power for desktop CPUs. It adopts uPI proprietary RCOTTM (Robust Constant On-Time) topology to have fast transient response and smooth mode transition. Similar to digital based PWM controller, the loop gain is also programmable by I2C interface to achieve design flexibility.
The uP1649Q provides VR_READY indicator. It also features complete fault protection functions including over voltage, under voltage, over current, over temperature and under voltage lockout. The uP1649Q is available in VQFN5X5 – 40L package.
Pin Configuration & Typical Application Circuit
Feature
- Intel VR12.5 Compliant
- RCOTTM Control Topology
- Easy Setting
- Smooth Mode Transient
- Fast Transient Response
- True Differential Current Balance Sense Amplifier
- Differential Remote Voltage Sensing
- Build-in ADC for Platform Setting
- I2C Interface for Performance and Efficiency Optimization
- Dynamic Programmable VR Parameters
- Programmable Protection Thresholds
- VR Reporting
- Programmable Loop Gain
- Enable Control and VR_READY Indicator
- H/W OCP Alert for System Protection
- System Thermal Management
- OCP/OVP/UVP
- RoHS Compliant and Halogen Free
Application
- Desktop PC Core Power Supplies