，AN908不建议新设计-奔腾Pro®处理器使用L4990A催性能的VRM，

，AN908不建议新设计-奔腾Pro®处理器使用L4990A催性能的VRM，

AN908
Application note
High performance VRM using L4990A,
for Pentium Pro processor

Introduction
The actual generation of Pentium Pro microprocessors, requires a power supply with a
programmable output voltage that decreases with the increasing of the processor internal
clock. At the same time higher output currents are required and superior load transient
performance has to be supplied due to very high dI/dt requests.
The VRM (Voltage Regulator Module) proposed (Figure 1.) is a step down