Explanation

US3007 The controller IC is specifically designed to meet Intel Pentium II #228; microprocessor application specifications and the next -generation P6 series processor. The US3007 provides a single -chip control IC for VCORE, provides GTL with LDO controller+

and the internal 200 mAh clock power supply regulator Pentium II application.

It also contains a switch controller converting a 5 -volt voltage to 3.3 volt to use the AT power supply or does not depend on ATX power 3.3 volt output.

The patent topology structure of these devices is combined with some external components. For example, a typical application circuit will provide a 14A output current exceeding the vehicle DC/DC converter at the same time through 5 internal DACs. The US3007 also has

by using

High-power MOSFET as the RDS-ON as a sensitive resistance. The internal current of the clock limits the power supply. When programming windows, the open -road set output. Other features of this device are: the underwriting of the two devices is 5V and 12V power supply, the external programming software startup function is used to switch output and internal heat shutdown OVP circuits through an external resistor.

Provide VCORE providing single -chip microcomputer solutions, GTL+, clock power supply, and 3.3 volt vehicle switch second switches for the 3.3 volts on board 200 mAh LDO voltage pressure device designed 8.2 and 8.2 and 8.2 and 8.2 and 8.2 and in the Intel VRM. Article 8.3

Pentium II #228; Specifies on the DAC programming output voltage from 1.3 to 3.5 volts, the online -based regulator controller 1.5 volt GTL+power supply without loss of short circuit protection. Frequency running at the minimum part of the duty cycle to the minimum number of parts, the number of softened starting DC current photo columns outside the driver MOSFET Drive power supply good function monitor all output OVP circuit protection switch output and generate failure output heating

block of blocks Figure

Typical application

[ 123] The typical application of the US3007 in the HIP6019 dual territory VCORE, GTL+, clock power supply, and the application of the defrost and the next -generation processor.

YingUse program information

How to calculate the example of the component

The application circuit is as follows.

假设此调节器必须满足Vcore的两组输出条件：

a） Vo 2.8V，Io 14.2A，DVo 185mV， DIO 14.2AB) VO 2V, IO 14.2A, DVO 140MV, DIO 14.2A, in addition, the vehicle 3.3V power supply must be able to provide 10A load current, maintaining the total output voltage change less than ± 5%. The design of the regulator should meet the worst cases of each condition. Output capacitor selects voltage

The first step is to select the output capacitor. This is mainly through the selection of the maximum ESR value to complete the transient voltage budget specification that meets the entire DVO. Assume that the initial accuracy of the regulator DC plus the output ripple is 2%of the output voltage, then the maximum ESR of the output capacitor is

Calculated as follows:

MGA

MVGX series It is to achieve price and performance goals. 6MV1500GX1500uf, 6.3V ESR is usually less than 36MW. Choose 6 of them with ESR with ESR to achieve our low ESR goal.

Other types of electrolytic capacitors produced by other manufacturers should consider the Panasonic FA " series or Nichicon "PL " series.

V power supply for 3.3V power supply