Technical Reference Note (APC08)
Electrical Specifications (continued)
Note: 3. This feature is only for module protection and is not intended for customer application. The value is
specified at 25C ambient air temperature. For other ambient air temperature, please refer to thermal
derating curve to determine corresponding current-limit inception values.
4. Pulse train with 90 ms period and 1ms pulse width. Average Iout equals about zero.
5. Input to Output Turn-On time is defined as the difference between t1 and t2: where t1 is the time
when the input voltage reaches the minimum VIN (VIN = VIN,MIN) and t2 is the time when the output
voltage reaches it's specified range (VO = VO,SET-Min).
6. There are two methods applicable to be able to trim the output voltage. Please refer to related
sections under Feature Specification.
7. See Figure 6 for PGood configuration
8. Refer to further notes under Feature Specification for the Enable Pin function.
9. Check with factory for higher output capacitance loading.
10. Please refer to “Basic Operation and Features” section on page 11 for additional information on Current
sharing.
11. Output ripple is measured with 470µF cap termination on the output.
ISOLATION SPECIFICATION
- The APC08 series are Non Isolated units.
SAFETY APPROVAL
- UL / cUL 60950, and TUV EN60950 - Flammability and temp rise only.
MODEL: APC08 SERIES
OCTOBER 4, 2004 - REVISION 03
SHEET 6 OF 23
ASTEC [ Astec America, Inc ]
