MAX1937, MAX1938, MAX1939 Two-Phase Desktop CPU Core Supply Controllers With Controlled VID Change

The MAX1937 MAX1938 MAX1939 comprise a family of synchronous, two-phase, Step-down controllers capable of delivering load currents up to 60A. The controllers utilize Quick-PWM control architecture in conjunction with active load-current voltage positioning. Quick-PWM control provides instantaneous load-step response, while programmable voltage positioning allows the converter to utilize full transient regulation limits, reducing the output capacitance requirement. The two phases operate 180 out-of-phase with an effective 500kHz switching frequency, thus reducing input and output current ripple, as well as reducing input Filter capacitor requirements.
The MAX1937 MAX1938 MAX1939 are compliant with AMD Hammer, Intel Voltage-Regulator Module (VRM) 9.0/9.1, and AMD Athlon Mobile VID code specifications (see Table 1 for VID codes). The internal DAC provides ultra-high accuracy of 0.75%. A controlled VID voltage transition is implemented to minimize both undervoltage and overvoltage overshoot during VID input change.
Remote sensing is available for high output-voltage accuracy. The MOSFET switches are driven by a 6V gate-drive circuit to minimize switching and crossover conduction losses to achieve efficiency as high as 90%. The MAX1937 MAX1938 MAX1939 feature cycle-by-cycle current limit to ensure that the current limit is not exceeded. Crowbar protection is available to protect against output overvoltage.
By Maxim Integrated Products
Part Manufacturer Description Datasheet Samples
MAX1937EEI-T Maxim Integrated Products Switching Controller, 500kHz Switching Freq-Max, BICMOS, PDSO28, 0.150 INCH, 0.025 INCH PITCH, MO-137, QSOP-28
MAX1937EEI Maxim Integrated Products Switching Controller, Voltage-mode, 500kHz Switching Freq-Max, BICMOS, PDSO28, 0.150 INCH, 0.025 INCH PITCH, MO-137, QSOP-28
MAX1937EEI+T Maxim Integrated Products Switching Controller, 500kHz Switching Freq-Max, BICMOS, PDSO28, 0.150 INCH, 0.025 INCH PITCH, MO-137, QSOP-28
MAX1937EEI+ Maxim Integrated Products Switching Controller, 500kHz Switching Freq-Max, BICMOS, PDSO28, 0.150 INCH, 0.025 INCH PITCH, MO-137, QSOP-28
MAX1938EVKIT Maxim Integrated Products Evaluation Kit for the MAX1937, MAX1938, MAX1939
MAX1937 's PackagesMAX1937 's pdf datasheet
MAX1937EEI QSOP
MAX1937EEI-T QSOP
MAX1937EEIT QSOP




MAX1937 Pinout, Pinouts
MAX1937 pinout,Pin out
This is one package pinout of MAX1937,If you need more pinouts please download MAX1937's pdf datasheet.

MAX1937 Application circuits
MAX1937 circuits
This is one application circuit of MAX1937,If you need more circuits,please download MAX1937's pdf datasheet.


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