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CAR1248FPXXXZ01A bảng dữ liệu(PDF) 8 Page - Lineage Power Corporation |
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8 / 11 page GE Data Sheet CAR1248FP series rectifier Input: 90VAC to 264VAC; Output: 48VDC @ 1200W; 5 VDC @ 0.5A February 26, 2013 ©2013 General Electric Company. All rights reserved. Page 8 VOUT [00]: Output voltage read back, returns the voltage on the anode side of the or’ing function, data LSB followed by MSB. The default value is 48VDC Example; readback 01EBh, convert into its decimal equivalent and then multiply by the constant, VOUT = 491 x 0.102 = 50.08VDC IOUT [01]: Output current read back, data LSB followed by MSB. Example; readback 021Fh, convert into its decimal equivalent and multiply by the constant, IOUT=543 x 0.042 = 22.8A Temperature [02]: Temperature read back, data LSB followed by MSB. Example; readback 037Bh, convert into its decimal equivalent and multiply by the xonstant, temp = 891 x 0.0049 = 4.36. In the table below this corresponds to 25C Data Temp C Data Temp C Data Temp C 4.83 -5 3.71 45 1.7 95 4.78 0 3.51 50 1.54 100 4.72 5 3.3 55 1.4 105 4.65 10 3.09 60 1.26 110 4.56 15 2.88 65 1.14 115 4.46 20 2.67 70 1.03 120 4.35 25 2.46 75 0.93 125 4.21 30 2.25 80 0.84 130 4.06 35 2.06 85 3.89 40 1.88 90 ON/OFF [03]: A logic ‘1’ turns OFF the 48V output of the power supply. Ilim [04]: This feature lowers the current limit from the default values of 02A8h (680), corresponding to 28.6A at high line and 0265h (613) corresponding to 25.8A at low line. The delivered output current cannot exceed the maximum power capacity of the unit. Thus, at high line the power supply is limited to 1200W, thus, at 28.6A the output voltage is limited to 41.96VDC, Example: At high line, reduce the current limit to 20A. Compute the data to be sent to the controller; 20 / 0.042 = 476. The hex equivalent of this decimal data is 01DCh. The data should be sent across the bus as LSB [DC] followed by MSB [01]. Vset [05]: Changes the output voltage via i2c, if the Vprog hardware signal is > 4VDC. If the Vprog pin voltage level is < 4VDC, this command is ignored. The output voltage setting must be between 42.8 – 56VDC. The default value is 01FEh, corresponding to 48VDC. Example; set the output to 54VDC. Compute the data to be sent to the controller; 54 / 0.094 = 574. The hex equivalent of this decimal data is 023Eh. The data should be sent across the bus as LSB [3E] followed by MSB [02]. Vprog [06]; Reads back the hardware configured analog voltage program value via i2c. The value can range from 0.364V to 3.27V. Example: set the output to 44VDC. From the equation determine that Vprog = 0.6. The 10bit D/A is set for the range of 0 – 5VDC, therefore with a resolution of 1024 bits each bit is 0.00488V. So the corresponding value to enter is 0.6/0.00488 = 123 decimal. This corresponds to 7Bh. The data should be sent across the bus as LSB [7B] followed by MSB [00]. OT trip[07] and OT recover[08]; Configures the OT shutdown and recovery levels. The default values are; OT trip: 120C corresponds to 1.03/0.00488 = D3h OT recover: 110C that corresponds to 1.26/0.0049 = 0102h Example: Change the recovery temperature to 100C. In the look up table above the corresponding level is 1.54. Divide by the conversion ration, 1.54/0.0049 = 315 dec. Converting to its hex equivalent yields 013B hex. The data should be sent across the bus as LSB [3B] followed by MSB [01]. DC_OK_HI[09] and DC_OK_LO[0A]: Changes the DC_OK signal comparator level. The default values are; DC_OK_HI: 02CDh, corresponding to 67.5V DC_OK_LO: 0133h, corresponding to 28.9V Example: Change the upper level of comparison to 55V. Determine the corresponding register value setting; 55/0.0941 = 584dec. This is equivalent to 0248h. The data should be sent across the bus as LSB [48] followed by MSB [02]. STATUS [0B]: All read backs are two bytes and so read back two bytes but ignore the MSB. Firmware [0C]: Reads back the latest firmware revision. MCUeeprom [0D – 7C]: 125 bytes of information may be stored in the EEPROM section of the micro controller starting from register location 0Dh. Each byte of data needs to be stored into its specific register location, one byte at a time. External EEPROM A separate EEPROM, with its own i2c address and with write_protect capability, provides 128 bytes of memory. This is a standard i2c compliant generic EEPROM with a single byte for its memory location. Standard i2c command structure applies. The following FRU_ID information is stored in this EEPROM Start Location Length Value Description 00 7 Serial number, ascii 07 1 20 space 08 4 Date code [YYWW] ascii 0C 1 20 space 0D 17 Code CAR1248FPBXXXX1A ascii 1E 1 20 space 1F 1 Revision |
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