309
Programmable Hardware Manual (PHM)
© Tibbo Technology Inc.
7.2.9.23
#12, M1S: Low-power +15/-15V Power Supply, 5V Input
Function:
Low-power non-isolated power supply with +15/-15V output, 5V input,
shutdown control
Category:
Power supply module
Special needs:
---
Power requirements:
5V/230mA + curr * 4.5 ("curr" is the combined current
consumed on 15V and -15V outputs)
Mates with
*
:
See also:
Details
This Tibbit is capable of generating up to 15mA of +15V power and 15mA of -15V
power from the main 5V supply rail. This Tibbit, therefore, does not rely on the
outside power but instead gen/-15V from the internal main power of the
TPS. The diagram in
actually shows Tibbit #12 and its "power
relationship" with other Tibbits. Multiple Tibbits #12 can be used to increase
ava/-15V current budget.
The module is required for the correct operation of Tibbits
(DAC).
This Tibbit has a base (idle) power consumption of 230mA. Each additional mA of
current consumed on the +15V and -15V outputs results in 4.5mA of extra power
drain on the 5V input. This 4.5 ratio is explained by the threefold difference in the
input (5V) and output (15V) voltages, as well as associated power conversion
losses.