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ATX12V Power Supply Design Guide
Version 2.0
10
3.1.3. Input Under-voltage
The power supply shall contain protection circuitry such that the application of an input
voltage below the minimum specified in Section 3.1, Table 1, shall not cause damage to the
power supply.
3.1.4. Regulatory
The power supply is required to be tested and comply with the most current version
of the following regulatory specification requirements and/or standards
PRODUCT SAFETY
UL* 60950, 3
rd
Edition –CAN/CSA-C22.2-60950-00,
EN*60 950, 3
rd
Edition
IEC*60 950, 3
rd
Edition (CB Report to include all national deviations)
EU* Low Voltage Directive (73/23/EEC) (CE Compliance)
GB4943-90 CCIB* (China)
ELECTROMAGNETIC CAMPATIBILITY
FCC*, Class B, Part 15 (Radiated & Conducted Emissions)
CISPR* 22 / EN55022, 3
rd
Edition (Radiated & Conducted Emissions)
EN55024 (ITE Specific Immunity)
EN 61000-4-2 – Electrostatic Discharge
EN 61000-4-3– Radiated RFI Immunity
EN 61000-4-4– Electrical Fast Transients.
EN 61000-4-5 – Electrical Surge
EN 61000-4-6 – RF Conducted
EN 61000-4-8 – Power Frequency Magnetic Fields
EN 61000-4-11 – Voltage Dips, Short Interrupts and Fluctuations
EN61000-3-2 (Harmonics)
EN61000-3-3 (Voltage Flicker)
EU EMC Directive ((8/9/336/EEC) (CE Compliance)
Other Certifications and/or Declarations
GB925 (China/CCC*), CNS13438 (Taiwan/BSMI*),
AS/NZ3548 (Australia/C-tick* based on CISPR22)