 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
SP6136EB 数据表(PDF) 2 Page - Sipex Corporation |
|
|
|||||||||||||||||||||||||||||
SP6136EB 数据表(HTML) 2 Page - Sipex Corporation |
|
|
2 / 9 page  Rev 5/01/06 SP6136 Evaluation Manual Copyright © 2006 Sipex Corporation Page 2 of 9 USING THE EVALUATION BOARD 1) Powering Up the SP6136EB Circuit Connect the SP6136ER1 Evaluation Board with an external +12V power supply. Connect with short leads and large diameter wire directly to the “VIN” and “GND” posts. Connect a Load between the “VOUT” and “GND2” posts, again using short leads with large diameter wire to minimize inductance and voltage drops. 2) Measuring Output Load Characteristics It’s best to GND reference scope and digital meters using the Star GND post in the center of the board. VOUT ripple can best be seen touching probe tip to the pad for COUT and scope ground collar touching Star GND post – avoid a ground lead on the probe which will increase noise pickup. 3) Using the Evaluation Board with Different Output Voltages While the SP6136ER1 Evaluation Board has been tested and delivered with the output set to 3.30V, by simply changing one resistor, R2, the SP6136ER1 can be set to other output voltages. The relationship in the following formula is based on a voltage divider from the output to the feedback pin VFB, which is set to an internal reference voltage of 0.80V. Standard 1% metal film resistors of surface mount size 0603 are recommended. Vout = 0.80V ( R1 / R2 + 1 ) => R2 = R1 / [ ( Vout / 0.80V ) – 1 ] Where R1 = 68.1KΩ and for Vout = 0.80V setting, simply remove R2 from the board. Furthermore, one could select the value of the R1 and R2 combination to meet the exact output voltage setting by restricting R1 resistance range such that 50KΩ ≤ R1 ≤ 100KΩ for overall system loop stability. Note that since the SP6136ER1 Evaluation Board design was optimized for 12V down conversion to 3.30V, changes of output voltage and/or input voltage may alter performance from the data given in the Power Supply Data section. POWER SUPPLY DATA The SP6136ER1 is designed with an accurate 1.5% reference over line, load and temperature. Figure 1 data shows a typical SP6136ER1 Evaluation Board efficiency plot, with efficiencies to 92% and output currents to 7A. Load Regulation in Figure 2 shows only 0.12% change in output voltage from no load to 7A. Figures 3 and 4 show the fast transient response. Start-up corresponding to different load conditions is shown in Figures 5, 6 and 7, where the input current rises smoothly as the soft-start ramp increases. In Figure 8 the hiccup mode gets activated in response to an output dead short circuit condition and will soft-start until the over-load is removed. Figure 9 and 10 show output voltage ripple less than 11mV over complete load range. While data on individual power supply boards may vary, the capability of the SP6136ER1 of achieving high accuracy over a range of load conditions shown here is quite impressive and desirable for accurate power supply design. |
|
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
