Features

*Double N channel design

*more than 1MHz run

*100ns transient response

*5 digits DAC

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123]*Compatible with backward compatibility CS5120/5121

*30NS door rising/decrease time

*1%DAC accuracy

*5V and 12V operations

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123]*Remote perception

*programmable soft start

*non -destructive short circuit protection

*VCC monitor

*25ns field effect tube non -overlapping time *V2TM control topology

*current sharing

*overvoltage protection

cs5157h Yes A 5 -bit synchronous dual N -channel antihypertensive controller. Its design purpose is to provide non -interference transient response for high -density and high -speed logic today. The regulator uses a proper control method to operate. This method allows the response time of the load to be 100ns transient CS5157H. It is designed to work within the range of 4.25-20V (VCC). main power.

CS5157H is designed specifically for Pentium II processors and other high -performance core logic. It includes the following functions: vehicle, 5 -bit DAC, short -circuit protection, 1.0%output tolerance, VCC monitor and Pro programmable soft startup function. CS5157H is installed with 16 stitches.

Application Relationship Figure

Core logic switch power supply-Pentium II processor

Program package option

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block diagram

V2 control method trademark

V2TM control method uses the slope signal generated by the ESR of the output capacitor. This slope is proportional to the AC current through the main electromoter and is offset by the value of the DC output voltage. Because the slope signal is generated by the output voltage itself, the control scheme inherently compensates the changes in the line or load conditions. This control scheme is different from traditional technologies, such as an artificial slope generated by the voltage mode, and the current mode generates an inductive current slope.

FIG. 1 shows the V2TM control method. The output voltage is used to generate error signals and slope signals. Because the slope signal is only the output voltage, it is affected by any change in the output, regardless of the source of the change. The slope signal also contains the output voltageIn the DC part, it allows the control circuit to drive the main switch to 0%or 100%duty cycle as required.

The changes in the line voltage will change the current slope in the inductance, which affects the slope signal, which will cause the V2TM control scheme to compensate for the duty ratio. Because the changes in the inductance current will change the slope signal, in the current mode control, the V2TM control scheme has the same advantage in the transient response of the line.

The change of load current will affect the output voltage, thereby changing the slope signal. The loading step is immediately changed to the status of the comparator output, and the comparator output control the main switch. The load transient response is determined by the conversion speed of the comparator in response time and the main switch. Like the traditional control method, the response time of the output load level jump has nothing to do with the cross frequency of the error signal ring.

Because the transient response is processed by the slope signal ring, the error signal ring circuit can have a lower cross frequency. The main purpose of this slow " feedback circuit is to provide DC accuracy. The noise resistance is significantly increased