Using the UCC28230EVM User's Guide Literature Number: SLUU331 July 2008
User's Guide SLUU331 – July 2008 Intermediate Bus Converter 300-W Evaluation Module 1 Introduction The UCC28230 evaluation module, is a 300-W intermediate bus converter, providing an unregulated output voltage nominally at 9.6V at maximum 300 W of load power with basic isolation of telecom standard between the primary and the secondary, operating from a dc input between 43 V and 53 V.
Electrical Performance Specifications www.ti.com 3 Electrical Performance Specifications Table 1. Electrical Performance Specifications PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Input Characteristics Voltage range VIN 43 Input inrush current Maximum input current 53 VDC 8.5 A VIN = 43 VDC, IOUT = 30 A 6.1 A VIN = 53 VDC, IOUT = 30 A 6.1 Output Characteristics Output voltage VOUT VIN: 43 - 53 VDC, IOUT: 0 - 30 A 8 Load current1 VIN: 43 – 53 VDC 0 Continuous output power (1) 9.
Schematics 4 www.ti.com Schematics 1 V 0 The EVM schematic is shown in Figure 1. Figure 1.
Test Setup www.ti.com 5 Test Setup 5.1 List of Test Point Location The EVM provides plenty of test points to facilitate the device's evaluation work. All test points are divided into two major groups, primary test points and secondary test points. Their locations are shown in Figure 2. The list below helps users to identify the functions of each test point. Figure 2. Test Point Locations Table 2.
Test Setup 5.2 www.ti.com Equipment DC Input Source: The input source shall be a variable dc source capable of supplying between 40 VDC and 55 VDC with 10 ADC current rating. Multimeters: Multimeters are used to measure the output voltage (DMM1), the input voltage (DMM3), the output current (DMM2) and the input load current (DMM4). Output Load: A programmable electronic load is recommended configurable for constant current mode and capable of sinking 0 to 35 ADC from 8 VDC to 11 VDC.
Test Setup www.ti.com Figure 3.
Test Procedure 6 www.ti.com Test Procedure Setup the EVM with equipment as shown in Figure 3 and following the test set up directions described in Test Setup Section. 6.1 Line and Load Regulation Set up the load to zero amperes and input voltage between 43 V and 53 V. Prior to turning on the power, set up the input source current limit to 6.5 A to avoid potential damage, although the EVM has its power limit typical 450 W. Turn on the input source.
Performance Data and Characteristic Curves www.ti.com 7 Performance Data and Characteristic Curves 7.1 Line Regulation 11 Output Voltage V 10.5 10 Io = 0A 9.5 Io = 15A Io =30A 9 8.5 8 43 48 53 Input Voltage V Figure 4. 7.2 Load Regulation 11.000 Output Voltage V 10.500 10.000 43Vin 9.500 48Vin 53Vin 9.000 8.500 8.000 0 5 10 15 20 25 30 35 Load Current A Figure 5.
Performance Data and Characteristic Curves 7.3 www.ti.com Efficiency 97.00% 96.00% Efficiency 95.00% 94.00% 43Vin 48Vin 53Vin 93.00% 92.00% 91.00% 90.00% 5 10 15 20 25 30 35 Load Current A Figure 6. 7.4 Power Losses 15.000 14.000 13.000 12.000 11.000 Power Loss W 10.000 9.000 43V 8.000 48V 7.000 53V 6.000 5.000 4.000 3.000 2.000 1.000 0.000 0.00 5.00 10.00 15.00 20.00 25.00 30.00 35.00 Load Current A Figure 7.
Performance Data and Characteristic Curves www.ti.com 7.5 Output Voltage Ripple Figure 8. Test Condition VIN = 48 V, IO = 10 A 7.6 Typical Waveforms Figure 9. Test Condition: VIN = 48 V, IO = 10 A SLUU331 – July 2008 Submit Documentation Feedback Figure 10.
EVM Assembly Drawing and PCB Layout 8 www.ti.com EVM Assembly Drawing and PCB Layout Figure 11 through Figure 16 show the layout of the four-layer printed circuit board used for the EVM. Figure 11. PCB Top Assembly Figure 12.
www.ti.com EVM Assembly Drawing and PCB Layout Figure 13. PCB Internal Layer 1 Copper Figure 14.
EVM Assembly Drawing and PCB Layout www.ti.com Figure 15. PCB Bottom Assembly Figure 16.
List of Material www.ti.com 9 List of Material Table 3. UCC28230 List of Material QTY REFDES DESCRIPTION MFR PART NUMBER Murata GRM32ER72A225KA35 Johanson Dielectrics 202R18W102MV4E Capacitor, ceramic, 16 V, X5R, 10%, 1 µF, 805 Murata GRM216R61C105KA88 C20, C21, C22, C23, C28 Capacitor, ceramic, 16 V, X5R, 10%, 22 µF, 1210 Murata GRM32ER61C226KE20 1 C26 Open, 805 STD STD 1 C29 Open, 0.150 x 0.400 in STD STD 3 C3, C11, C12 Capacitor, ceramic, 25 V, X7R, 10%, 0.
References www.ti.com Table 3. UCC28230 List of Material (continued) QTY 10 REFDES DESCRIPTION MFR PART NUMBER Panasonic ERJ-8ENF5903V Yageo RC0603FR-0751K1L Resistor, chip, 1.0 Ω, 1/8 W, 1%, 805 Panasonic ERJ-6ENF1R0V R16, R17, R18, R19 Resistor, chip, 1.0 Ω, 1/16 W, 1%, 603 Yageo RC0603FR-071R00L 1 R2 Resistor, chip, 105 kΩ, 1/16 W, 1%, 603 Yageo RC0603FR-07105KL 3 R20, R22, R24 Open, 603 STD STD 1 R21 Resistor, chip, 0.
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