onsemi ADP3164
The ADP3164 is a highly efficient 4-phase synchronous buck switching regulator controller optimized for converting a 12 V main supply into the core supply voltage required by high performance Intel processors. The ADP3164 uses an internal 5-bit DAC to read a voltage identification (VID) code directly from the processor, which is used to set the output voltage between 1.1 V and 1.85 V. The ADP3164 uses a current mode PWM architecture to drive the logic-level outputs at a programmable switching frequency that can be optimized for VRM size and efficiency.| Part No. | ADP3164 |
|---|---|
| Datasheet | ADP3164 Download |
| Manufacturer |  onsemi |
| Description | 5-Bit Programmable 4-Phase Synchronous Buck Controller |
| Buy | Stock & Price |
FEATURES
ADOPT™ Optimal Positioning Technology for Superior Load Transient Response and Fewest Output Capacitors Complies with VRM 9.1 with Lowest System Cost 4-Phase Operation at up to 500 kHz per Phase Quad Logic-Level PWM Outputs for Interface to External High-Power Drivers Active Current Balancing between All Output Phases Accurate Multiple VRM Module Current Sharing 5-Bit Digitally Programmable 1.1 V to 1.85 V Output Total Output Accuracy ؎0.8% Over Temperature Current-Mode Operation Short Circuit Protection Enhanced Power Good Output Detects Open Outputs in Multi-VRM Power Systems Overvoltage Protection Crowbar Protects Microprocessors with No Additional External ComponentsAPPLICATIONS
Desktop PC Power Supplies for: Intel Pentium® 4 Processors VRM Modules 5-Bit Programmable 4-Phase Synchronous Buck Controller ADP3164 REF GND CT FUNCTIONAL BLOCK DIAGRAM VCC UVLO & BIAS ADP3164 SET RESET CROWBAR 3.0V REFERENCE 4-PHASE DRIVER LOGIC OSCILLATOR DAC + 20% POWER GOOD PWM1 PWM2 PWM3 PWM...
