DPA424R Power Integrations, DPA424R Datasheet - Page 3

• Manufacturer Part Number: DPA424R
• Description: IC CONV DC-DC DPA SWITCH TO263-7
• Manufacturer: Power Integrations
• Series: DPA-Switch®r

Specifications of DPA424R

• 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: D²Pak, TO-263 (6 leads + tab, variant)
• Output Voltage: 9 V
• Output Current: 3.5 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: DAK-21A - KIT DESIGN ACCELERATOR DPA SW
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 2. Methods for Generation of Bias Voltage.
Output Rectifiers
Output rectification may be accomplished with discrete Schottky
diodes for lowest cost or synchronous rectifiers for highest
efficiency. This document discusses synchronous rectification
+
+
D
S
CONTROL
CONTROL
D
S
X
L
CONTROL
CONTROL
F
Output Coupled Inductor Bias
DPA-Switch
X
C
L
DC Input Derived
F
DPA-Switch
C
(a)
(c)
U2
PI-3468-042303
U2
PI-3470-042303
+
+
in greater detail in a separate section. Ultra-fast PN junction
diodes are not suitable at DPA-Switch operating frequencies.
D
S
D
S
CONTROL
CONTROL
CONTROL
CONTROL
X
X
L
L
Transformer Bias (unregulated)
F
DPA-Switch
F
C
DPA-Switch
C
Transformer Bias (regulated)
(b)
(d)
AN-31
PI-3469-042303
PI-3471-042303
U2
7/04
C
U2
3