ON Semiconductor 25VT6A5VGEVB User Manual
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ON Semiconductor 25VT6A5VGEVB User Manual

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25VT6A5VGEVB
25VT6A5VGEVB Evaluation
Board User's Manual
Description
The 25VT6A5VGEVB evaluation board is designed such
that it can accommodate a 1x1 to a 2x2 combination of
MOSFETs, for m8−FL and SO8−FL packages. Depending
on the type of application and necessity, any combination of
the above packages can be used. The 25VT6A5VGEVB
evaluation board is designed to operate with an input voltage
ranging from 8 V to 16 V, and to provide an output voltage
of 0.8 V to 1.8 V for load currents of up to 25 A. The
25VT6A5VGEVB comes with a 5 V driver. The
25VT6A5VGEVB evaluation board has a number of test
points that can be used to evaluate its performance in any
given application.
Features
•
8 V to 16 V Input Voltage
•
25 A of Steady State Load Current
•
500 kHz Switching Frequency
•
Access to IC Features such as Enable, Switching Node
and VID Settings for Output Voltage
© Semiconductor Components Industries, LLC, 2014
April, 2014 − Rev. 1
•
Applications
•
•
Figure 1. 25VT6A5VGEVB Evaluation Board
1
http://onsemi.com
EVAL BOARD USER'S MANUAL
Convenient Test Points for Simple, Non−invasive
Measurements of Converter Performance Including
Input Ripple, Output Ripple, High Side and Low Side
Gate Signals and Switching Node
Synchronous Buck Converters
High Frequency Applications
♦
High Current Applications
♦
Low Duty Cycle Applications
♦
Multi−phase Synchronous Buck Converters
Evaluation Board has only One Phase Implemented
♦
Publication Order Number:
EVBUM2227/D

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Summary of Contents for ON Semiconductor 25VT6A5VGEVB

  • Page 1 EVAL BOARD USER’S MANUAL the above packages can be used. The 25VT6A5VGEVB evaluation board is designed to operate with an input voltage ranging from 8 V to 16 V, and to provide an output voltage of 0.8 V to 1.8 V for load currents of up to 25 A.

  • Page 2: Evaluation Board Schematic

    25VT6A5VGEVB EVALUATION BOARD SCHEMATIC Figure 2. Schematic of the 25VT6A5VGEVB Evaluation Board http://onsemi.com...

  • Page 3: Electrical Specifications

    Table 1. The 25VT6A5VGEVB evaluation board Connect the input voltage positive probe to Pin 1 of J1 and is set up to accept DFN8 footprints of ON Semiconductor sense probe at J9, negative probe to the GND at Pin 2 of J1 5 V drivers.

  • Page 4: Test Equipment Required

    Monitoring the Input Voltage shown in Figure 3. The input voltage can be monitored by using the test points at J9 and J10 on the 25VT6A5VGEVB evaluation Monitoring the PWM Signal board. This allows the user to find out the exact value of...

  • Page 5: Test Set Up And Procedure

    The test set up, test points and components present on the The MOSFET parts placed on the evaluation board are the Q1 25VT6A5VGEVB Evaluation Board are shown in Figure 4. and Q4 (Refer to Figure 1). Figure 4. Schematic of the Test Setup Start up and Shut down Procedures reset the controller.
  • Page 6 25VT6A5VGEVB reset the controller. The first method is to toggle 4. Reduce the driver voltage and controller voltage to Pin 8 (EN) of the Grayhill switch (SW2) to 0 zero. Then shut down the driver power supply and (down position) and then back to 1 (up position).

  • Page 7: Test Results

    25VT6A5VGEVB TEST RESULTS The following test results were obtained for the 25VT6A5VGEVB evaluation board by following the Test Procedure listed above. The selected MOSFETs were evaluated in a 1 x 1 combination. Figure 5. Efficiency of NTTFS4H07N x NTMFS4H02NF for V = 12 V, V = 1.2 V, V...
  • Page 8 25VT6A5VGEVB APPENDIX Table of AMD VID Settings for NCP5386B Controller The Grayhill 76PSB08ST 8 position switch used for setting the output voltage of the synchronous buck converter. Figure 7 below shows the pin assignment of the switch. VID0 – VID5 set the output voltage. DAC, and EN is the enable pin of the controller (controller reset).
  • Page 9 PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: N. American Technical Support: 800−282−9855 Toll Free ON Semiconductor Website: www.onsemi.com Literature Distribution Center for ON Semiconductor USA/Canada Order Literature: http://www.onsemi.com/orderlit P.O. Box 5163, Denver, Colorado 80217 USA Europe, Middle East and Africa Technical Support: Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada...

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