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Overview
| Topology | Other Topology |
| Switching frequency | 200-1000 kHz |
| IC revision | 5 |
Description
The NCP81174 is a general−purpose up to four−phase synchronousbuck controller. It combines differential voltage sensing, differentialphase current sensing, and PWM VID interface to provide accurateregulated power for the computer or graphic controllers. It canreceive power saving command (PSI) from processors and operates insingle−phase diode emulation mode to obtain high efficiency in lightload. Dual−edge multiphase PWM modulation ensures a fast transientresponse with minimum possible capacitors.
Features
- Output Voltage up to 2.0 V with PWM VID Interface
- Support 1.8 V and 3.3 V VID interface
- Remote Differential Output Voltage Sense
- Differential Current Sense For Each Phase
- 200 kHz − 1000 kHz Switching Frequency
- Power Saving Interface (PSI)
- Power Good Output
- Thermally Compensated Current Monitoring
- Over Current Protection
- Fast Transient Response
- 5 V VCC Shunt Regulator
- Latched OVP and UVP Protections
- QFN−32, 5 x 5 mm, 0.5 mm Pitch Package
- This is a Pb−Free Device
Typical applications
- Graphics Card Applications
- GPU and CPU Power
- Desktop and Notebook Applications
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | fres (MHz) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744314047 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCI SMT Flat Wire High Current Inductor | 0.47 | – | – | 1.35 | 235 | 31.9 | 9 | 20 | Superflux | ||
 | 74404064010 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LQS SMT Power Inductor | 1 | 5.9 | 11.5 | 11 | 159 | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 744314047 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | |
| 74404064010 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | fres (MHz) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | Material | Samples |
|---|