FAN4810EVAL Datasheet, PDF (1/6 Pages) Fairchild Semiconductor – Power Factor Controller

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FAN4810EVAL
Evaluation Kit User’s Guide
Power Factor Controller
General Description
The FAN4810 Evaluation Board is a power-factor-corrected
500W off-line power supply. The supply has a single 400V
output and operates over an input voltage range of 90 VAC to
265 VAC. The Evaluation Board uses an average mode boost
PFC that allows it to be fully complaint with IEC 61000-3-2
limits for harmonic emission.
When operating the FAN4810 Evaluation Board there are
two things to keep in mind. A minimum load of 15 to 20
Watts is required to prevent output from rising to the OVP
point. This will provide continuous operation and prevent the
PFC from periodic shutdown due to OVP. Also, there is no
current inrush limiting included in the Evaluation Board.
Because of this it is suggested that the input voltage is
always ramped up slowly.
Evaluation Kit Contents
The FAN4810 Evaluation Kit contains the following items:
1. FAN4810 Evaluation Kit Users Guide
2. Fully Functional FAN4810 Evaluation Board
Circuit Design
Refer to Application Note, AN-6004 for detailed design
information on this board.
CAUTION!
The FAN4810 Evaluation Board contains voltage
potentials capable of causing serious injury, and compo-
nents that may shatter or explode if they fail. Appropri-
ate precautions must be taken to prevent injury should
such situations occur. The use of protective eyeware is
strongly recommended.
To safely observe circuit waveforms, an isolation
transformer should be used between the Evaluation
Board and the AC line.
Do not operate this board with DC/AC voltages
outside the design limits.
Replace circuit components only with those
recommended in the parts list of this User’s Guide.
How to Operate
Use the following procedure to safely operate the power
supply.
1. Connect a 100W load across the output terminals
(J3 and J4).
2. Connect a DC voltmeter across the output terminals.
3. Connect an isolated variable AC source (such as a
variac) to input terminals J1 and J2. A DC source may
be substituted at the input for easier examination of the
waveforms.
4. Slowly increase the AC input voltage to at least 90VAC
(Do not exceed 265VAC). If applying a DC input
increase it to 120 Volts.
5. Confirm that the output voltage increases as the input
voltage is increased.
6. As the input voltage approaches very close to 90VAC
(120VDC) the Board output should read approximately
404VDC within 5 sec.
7. Remove the AC input and verify that the output voltage
has dropped to zero.
8. Connect a 500W load across the output terminals and
reapply the AC input.
Performance Data
To measure the Eval Board performance across the range
of permissible input voltages use an isolated Variac or
adjustable AC source. It is suggested that the input voltage is
increased slowly as the evaluation board has no inrush
current limiting.
A typical FAN4810 evaluation board will have the perfor-
mance characteristics shown in Figure 1 when operated as
specified in the Test Conditions.
REV. 1.0.2 6/17/04