APA06 Non-Isolated Power SIPs
3V-5.5V Input, 1.2V-3.3V Output, 9-20W Output
Parallel application
J1 PIN 5
J2 PIN 5
J1 PIN 5
APA06 series DC-DC converters can be used
in parallel (at most two modules). You can use
diode (or not) in output circuit. The parallel two
power module can (total) output the largest cur-
rent 7.5~8A in a long time. If the load is over
8A, the output will be in hiccup over-current pro-
tection. The application circuit is shown as in
Figure 5.
Trim up
Trim up
10KΩ
Trim Pot
J2 PIN 5
Trim down
Trim down
J1 PIN 2
J1 PIN 2
1.2Vout:
7.18xV
- 25.58
25.38 x V
- 25.58
11.78 - 9.78 x V
o down
o up
o down
R
=
R
=
=
trim up
trim down
11.78 - 9.78 x V
o up
1.5Vout:
22µF/10V
22µF/10V
210 x V
- 262.51
o down
o down
136.9 - 54.75 x V
o up
R
trim down
R
=
trim up
55 - 37 x V
18.65 x V
- 27.88
o up
1.8Vout:
135.04 x V
- 168.795
o down
6.20 x ( 8.25 - 2.7 x V
)
o up
R
R
R
=
=
=
=
trim down
R
=
trim up
52.8 - 29.37 x V
o down
8.9 x V
- 16.00
o up
2.1Vout:
41.21 x V
- 51.51
o down
220µF
3.01 x ( 4.6 - V
)
o up
trim down
R
=
trim up
31.03 - 14.84 x V
o down
o down
o down
4.01 x V
- 8.39
o up
2.5Vout:
7.37 x V
- 9.55
o down
1.40xV
- 9.55
o up
R
=
trim down
trim up
6.78 - 2.72 x V
6.78 - 2.72 x V
o up
Fig.5 APA06 Parallel Application
3.3Vout:
4.43 x V
- 5.89
0.73xV
- 5.89
o down
o up
R
=
The load is between 6A and 8A, a resistance
Rsense which is 1Ω is needed for current shar-
ing. If you want to use our APA06 series power
module in parallel mode, please advise the fac-
tory for details.
R
trim up
trim down
5.72 - 1.73 x V
5.72 - 1.73 x V
o up
Where: R
R
is trimming up resistance,
trim up
is trimming down resistance,
trim down
V
V
is trim up voltage,
o up
is trim down voltage,
o down
R is in kΩ.
Fig.4 Output Voltage Set-point Adjustment
Safety Considerations
Output Over-Current Protection
For safety-agency approval of the system in
which the power module is used, the power
module must be installed in compliance with the
spacing and separation requirements of the
end-use safety agency standard, i.e., UL1950,
CSA C22.2 No. 950-95, and VDE 0805
(EN60950, IEC950).
APA06 series DC-DC converters feature cur-
rent limiting with a threshold is between 8.4A
and 10.8A. These modules can tolerate short
circuit conditions (continuously of transient).
When the overcurrent condition is removed, the
converter will automatically restart.
For the module's output to be considered meet-
ing the requirements of safety extra-low voltage
(SELV), one of the following must be true:
1. All inputs are SELV and floating, with the out-
put also floating.
Power Good signal
min
max
High-level
Low-level
2.1V
1.05V
Inner resistance = 5.1kΩ.
2. All inputs are SELV and grounded, with the
-11-
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