Datasheet

Evaluation Board

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8 Evaluation Board

The evaluation board shows how the LM10011 is used to control the LM21215A-1. However, the

LM10011 can operate independently without the LM21215A-1 by jumpering pins 2 and 3 on JP1 and

applying the supply voltage through the VDD test point. The IDAC_OUT output current can be observed at

the IDAC test point with the jumper removed from FB.

Additionally, the output voltage range of the evaluation board can be adjusted by replacing the R

FB1

and

FB2

feedback resistors on the board. However , a change in the feedback resistors may change the

compensation network for the LM21215A-1 and this may require adjustments in values for C

, C

, and R

. For further guidance with component selection, please see the LM21215A-1 datasheet and

evaluation board user's guide.

9 LM10011 Control and Design Software

The LM10011 evaluation board comes with a communications dongle and software to control the output

voltage (software can also be found on the LM10011 Texas Instruments Product Folder online). This

section describes software features and modes of operation. The software has a built-in calculator to

determine the feedback resistor values for a given range and resolution of operation. This is only used

when the user decides to remove the existing default resistor feedback values and determines the

LM21215A-1's compensation is correct for the new feedback resistors. The default or updated values are

used to calculate expected output voltages of the point of load regulator. After installing the Texas

Instruments VID GUI, open it by going to Start>Programs>Texas Instruments LM1001X_GUI-0.8.1-xxxx-

xxxx>LM1001X_GUI. Figure 4 shows the initial screen.

Figure 4. LM10011 Initial Screen

LM10011 Evaluation Module SNOU108A–December 2012–Revised April 2013

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