Instruction/ maintenance manual of the product UCC38500EVM Texas Instruments
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SLUU068C User ’ s G uide.
-2 User ’ s G uide February 2005 Power Management Products SLUU068C.
IMPORT ANT NOTICE T exas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
EVM IMPORT ANT NOTICE T exas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EV ALUA TION PURPOSES ONL Y and is not considered by TI to be fit for commercial use.
EVM W ARNINGS AND RESTRICTIONS It is important to operate this EVM within the input voltage range of 85 V to 265 V and the output voltage of 12 V +/− 5%. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM.
Contents Contents 1 General Information 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Features 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1 General Information General Information This chapter details the T exas Instruments (TI) DM38500 PFC/PWM Combination Controller 100W Power Factor Correction Preregulator Evaluation Module (EVM) SLUU068. It includes a list of EVM features, a brief description of the module illustrated with a pictorial, schematic diagrams, and EVM specifications.
Features 1-2 1.1 Features UCC38500 PFC/PWM Combination Controller 100W Power Factor Correc- tion Preregulator include: J Combines PFC and 2nd Stage Down Converter Controls J Controls Boost Preregulato.
Description 1-3 General Information 1.3 Operating Guidelines The operating guidelines for the evaluation board are provided with reference to the schematic in Figure 1−1 and the component layout in Figure 2−1. 1.3.1 Step 1. Load Connections A resistive or electronic load can be applied to the output terminals labeled OUT− and OUT+.
Description 1-4 Figure 1−1. DM38500 Evaluation Module Application Schematic UDG−00094 12 10 9 5 2 6 11 13 7 8 4 3 1 16 17 15 18 19 14 20 OVP/ENBL VSENSE V AOUT ISENSE MOUT CAOUT IAC VFF PKLIMIT VR.
DM38500 EVM Performance 1-5 General Information 1.4 DM38500 EVM Performance Figure 1−2 through 1−4 shows the typical evaluation module performance.
DM38500 EVM Performance 1-6 Figure 1−4. DM38500 T otal Harmonic Distortion 0 5 10 15 20 25 30 20 10 40 30 60 50 80 70 90 100 35 UCC38500 TOT AL HARMONIC DISTORTION vs OUTPUT POWER P OUT − W T otal.
2-1 Reference Reference This chapter includes a parts list and PCB layout illustrations for the DM38500 EVM. T opic Page 2.1 DM38500 EVM Part Descriptions 2−2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 DM38500 Board Layouts 2−4 . . .
DM38500 EVM Part Descriptions 2-2 2.1 DM38500 EVM Part Descriptions T able 2−1. DM38500 Part Descriptions Description Reference Qty V alue/T ype Number Manufacturer Part Number C12, C20, C29 3 1 µ .
DM38500 EVM Part Descriptions 2-3 Reference Description Reference Qty V alue/T ype Number Manufacturer Part Number R1, R12 2 Short R10, R36 2 200 Ω, ¼ W R25, R29, R27 3 10 k Ω , ¼ W R13 1 2 k Ω , ¼ W R14 1 1.5 k Ω , ¼ W R15, R19 2 3.92 k Ω , ¼ W R16 1 750 Ω , ¼ W R17 1 7.
DM38500 Board Layouts 2-4 2.2 DM38500 Board Layouts Board layout examples of the DM38500 EVM PCB are shown in the following illustrations. They are not to scale and appear here only as a reference.
An important point after buying a device Texas Instruments UCC38500EVM (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Texas Instruments UCC38500EVM yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Texas Instruments UCC38500EVM - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Texas Instruments UCC38500EVM you will learn all the available features of the product, as well as information on its operation. The information that you get Texas Instruments UCC38500EVM will certainly help you make a decision on the purchase.
If you already are a holder of Texas Instruments UCC38500EVM, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Texas Instruments UCC38500EVM.
However, one of the most important roles played by the user manual is to help in solving problems with Texas Instruments UCC38500EVM. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Texas Instruments UCC38500EVM along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
