DPA423GN Power Integrations, DPA423GN Datasheet - Page 28

• Manufacturer Part Number: DPA423GN
• Description: IC CONV DC-DC DPA SWITCH 8SMD
• Manufacturer: Power Integrations
• Series: DPA-Switch®r

Specifications of DPA423GN

• Applications: Converter, Power Over Ethernet and Telecom Applications
• Voltage - Input: 16 ~ 75 V
• Number Of Outputs: 1
• Voltage - Output: 220V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SMD Gull Wing
• Output Voltage: 9 V
• Output Current: 1.75 A
• Input Voltage: - 0.3 V to + 220 V
• Switching Frequency: 282 KHz to 425 KHz
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 79 %
• For Use With: 596-1195 - KIT REF DES DPA 6.6W DC-DC CONV596-1009 - KIT DESIGN ACCELERATOR DC-DC596-1007 - KIT DESIGN ACCELERATOR POE CONV
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The following precautions should be followed when testing
DPA-Switch by itself outside of a power supply. The schematic
shown in Figure 33 is suggested for laboratory testing of
DPA-Switch.
When the DRAIN pin supply is turned on, the part will be in
the auto-restart mode. The CONTROL pin voltage will be
oscillating at a low frequency between 4.8 V and 5.8 V and
the drain is turned on every eighth cycle of the CONTROL pin
oscillation. If the CONTROL pin power supply is turned on
Typical Performance Characteristics
28
BENCH TEST PRECAUTIONS FOR EVALUATION OF ELECTRICAL CHARACTERISTICS
DPA423-426
P
7/05
Figure 35. Current Limit vs. External Current Limit Resistance.
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Figure 34. Current Limit vs. EXTERNAL CURRENT LIMIT Pin Current.
0
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
-230
Minimum
5
-180
External Current Limit Resistor R
10
Typical
Maximum
I
15
-130
X
(µA)
while in this auto-restart mode, there is only a 12.5% chance
that the CONTROL pin oscillation will be in the correct state
(drain active state) so that the continuous drain voltage waveform
may be observed. It is recommended that the V
be turned on first and the DRAIN pin power supply second if
continuous drain voltage waveforms are to be observed. The
12.5% chance of being in the correct state is due to the divide-
by-8 counter. Temporarily shorting the CONTROL pin to the
SOURCE pin will reset DPA-Switch, which then will come up
in the correct state.
20
-80
IL
(kΩ)
25
-30
30
0
35
C
power supply