ZALMAN TNN 500AF User Manual page 7

⑤ High-Efficiency, Fanless Power Supply
The power supply uses high-efficiency FET
components and Heat Source Contact (HSC)
technology, eliminating the need for a fan, and
has a 10% higher power conversion efficiency
(80%) rating than conventional power supplies.
Heat from the power supply is transferred
directly to the high-capacity heatsink plates,
where it is dissipated by natural convection,
making the power supply free of noise and
vibration.
- High-capacity active PFC inductors, separate switching transformers for each power rail
(+12V, +5V, +3.3V), and 2-FET forward converter design all work to create a superior
level of stable power quality.
- Conventional power supplies tend to have lower output voltage due to line-dropping
phenomenon. The TNN Power Supply extends the output voltage sensors up to the
motherboard connection for +3.3V, +5V, and +12V rails to prevent this, enhancing
output voltage accuracy and assuring system stability.
■ Ripple and noise waveforms at DC output
a)+5VDC
(21.4mVp-p)
※ Data above were measured according to INTEL ATX v2.03/ATX12V power supply specs.
Measurement specifications : For each DC output, a bypass made up of one 0.1μ F
ceramic capacitor and one 10μ F electrolytic capacitor is connected and measured with
an oscilloscope (input impedance 1MΩ) at a frequency bandwidth of 20MHz. The
waveforms may differ under different measurement conditions.
3) Electricity Conservation
Since TNN 500AF is equipped with a high-efficiency power supply and does not use any
fans, it utilizes 10 to 15% less power compared to a conventional computer system under the
same configuration.
TNN 500AF
b)+3.3VDC c)+12V1DC
(42.2mVp-p) (80.8mVp-p)
d)+12V2DC e)-12VDC
(88.4mVp-p) (98.4mVp-p)
f)-5VDC g)+5VsdDC
(56mVp-p) (31.8mVp-p)