Q48SC12033 Datasheet, PDF (16/28 Pages) Delta Electronics, Inc. – 400W DC/DC Power Modules

Octal digit
0
1
2
3
4
5
6
7
Resistor(Kohm)
10
15.4
23.7
36.5
54.9
84.5
130
200
PMBus Data Format
The module receives and report date in LINEAR
format. The Exponent of the data words is fixed at a
reasonable value for the command; altering the
exponent is not supported. DIRECT format is not
supported by the module.
For commands that set or report any voltage
thresholds related to the output voltage, the module
supports the linear data format consisting of a two byte
value with a 16-bit, unsigned mantissa, and a fixed
exponent of -12. The format of the two data bytes is
shown below:
For commands that set or report all other thresholds,
including input voltages, output current, temperature,
time and frequency, the supported linear data format is
a two byte value with: an 11 bit, two’s complement
mantissa , and a 5 bit, two’s complement exponent
(scaling factor).The format of the two data bytes is
shown as in below.
The equation can be written as:
Value = Mantissa x 2^(exponent)
For example, considering set the turn on threshold of
input under voltage lockout to 34V by VIN_ON
command; the read/write data can be calculated refer
to below process:
Get the exponent of Vin, -3; whose binary is 11101
Mantissa =Vin/2^(-3)=34/2^(-3)=272;
Converter the calculated Mantissa to hexadecimal 110,
then converter to binary 00100010000;Combine the
exponent and the mantissa, 11101 and 00100010000;
Converter binary 1110100100010000 to hexadecimal
E910.
The equation can be written as:
Vout = Mantissa x 2^(-12)
For example, considering set Vout to 12V by
VOUT_COMMAND, the read/write data can be
calculated refer to below process:
Mantissa =Vout/2^(-12)= 12/2^(-12)=49152;
Converter the calculated Mantissa to hexadecimal
0xC000.
Datasheet
DS_Q48SC12033_04062017
E-mail: [e-mail]
http://www.deltaww.com/dcdc
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