March 30, 2004 - Fairchild Semiconductor announced the FAN5019, a multi-phase PWM controller, and the FAN5009, a dual, high-frequency MOSFET driver. These latest power management products from Fairchild form a chipset that is part of a complete VRM/VRD10.x power solution that meets the stringent power requirements of today's CPUs. The FAN5009/FAN5019 chipset is also scaleable enough to conform to the ever-evolving demands of high-performance microprocessors, which require more current than can be practically supplied by a single-phase VRM.
To meet tight power requirements, Fairchild's new FAN5009/FAN5019 chipset allows the regulator to scale from 2, 3, or 4 phases, and converges a 12V main supply into the highly accurate core supply voltage. In addition, the chipset can deliver up to 140A for the CPU core from a 12V input—providing scalability and power for future VRM10.x processors.
The FAN5019's architecture combines a highly stable, high-speed control loop with active voltage positioning (droop) to meet CPU load transient requirements while minimizing the number of output capacitors and their associated costs. Fairchild's VRM10.x solution uses temperature-compensated inductor current sensing—the current sense architecture recommended by major CPU manufacturers—to measure current and accurately set and maintain the loadline. Most competing products use MOSFET RDS(on) or sense resistors to measure current and set the loadline, a less accurate and more costly option. Fairchild's current sensing method allows the designer to change the FETs, without having to recompensate loadline control circuit values, and it provides tight accuracy at the lowest system cost, unlike competitive products.
The FAN5019 is pin- and function backward-compatible with Fairchild's FAN53168 and FAN53180 controllers, and the FAN5009 is pin- and function backward-compatible with the FAN53418 driver. To further increase the reliability of the supply chain, the FAN5019 and FAN5009 are also 100% pin-compatible second sources to the ADP3168, ADP3180, and the ADP3418, respectively.
The FAN5019 is available in a 28-lead TSSOP package and the FAN5009 is available in an 8-lead SOIC package. Both devices are rated for operation from 0 to +85°C and are currently available in volume production.
Price: FAN5019 (28-lead TSSOP): US$ 1.39 (1000 pcs); FAN5009 (8-lead SOIC): US$ 0.60(1000 pcs).Availability: Now
Delivery: 8 weeks for >100K quantities
