The TPS51631A is a driverless step-down controller that is fully compliant with the SVID
communications protocol, meeting the Intel VR12.5 specification. Advanced control features such as
D-CAP+ architecture with overlapping pulse support undershoot reduction (USR) and overshoot
reduction (OSR) provide fast transient response, lowest output capacitance and high efficiency. The
TPS51631A also supports single-phase operation in CCM or DCM for light-load efficiency. The
TPS51631A integrates the full complement of VR12.5 I/O features including VR_READY (PGOOD),
ALERT and VR_HOT. The SVID interface address allows
programming from 0 to 7. Adjustable control of VCPU slew rate and voltage positioning round out the
VR12.5 features. Paired with the new TPS51604 FET gate driver, the solution delivers exceptionally
high speed and low switching loss. The TPS51631A works with selected TI Power Stage™ products for
optimum efficiency as well as DrMOS products.
The TPS51631A is available in space saving, thermally enhanced 32-pin QFN package that
operates from 40°C to 105°C.
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