PKS604PN Power Integrations, PKS604PN Datasheet - Page 2

• Manufacturer Part Number: PKS604PN
• Description: IC OFFLINE SWIT OTP OCP HV 8DIP
• Manufacturer: Power Integrations
• Series: PeakSwitch®r

Specifications of PKS604PN

• Mfg Application Notes: PeakSwitch Design Guide AppNote
• Output Isolation: Isolated
• Frequency Range: 250 ~ 304kHz
• Voltage - Output: 700V
• Power (watts): 56W
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 8-DIP (0.300", 7.62mm), 7 Leads
• Output Voltage: 12 V
• Input / Supply Voltage (max): 265 VAC
• Input / Supply Voltage (min): 85 VAC
• Duty Cycle (max): 65 %
• Switching Frequency: 47 KHz
• Supply Current: 25 uA
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: Through Hole
• For Use With: 596-1126 - KIT DESIGN ACC PEAKSWITCH FAMILY
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 596-1117-5

Scope
This application note is intended for engineers designing an
isolated AC-DC flyback power supply using the PeakSwitch
family of devices. It provides guidelines to enable the engineer
to quickly select key components and also complete a suitable
transformer design. To simplify the task, this application note
refers directly to the PI Xls design spreadsheet that is part of
the PI Expert™ power supply design software suite.
In addition to this application note, the reader may also find the
PeakSwitch Reference Design Kit (RDK) (the RDK contains
an engineering prototype board, engineering report and device
sample) useful as an example of a working power supply. Further
details on downloading PI Expert, obtaining an RDK and updates
to this document can be found at www.powerint.com.
Quick Start
Readers can use the following information to quickly design a
transformer and select the components for a first prototype. Only
the information described below needs to be entered into the
PI Xls spreadsheet; other parameters will be automatically
selected by the spreadsheet, based on a typical design. References
to spreadsheet cell locations are provided in square brackets
[cell reference].
• Enter AC input voltage range VAC
• Enter nominal output voltage V
• Enter minimum output voltage at peak load assuming an
• Enter maximum output current at peak load or maximum
• Enter continuous (average) output power [B9]
• Enter efficiency estimate:
• Enter loss allocation factor Z [B12]:
• Enter C
Rev. E 02/07
minimum line frequency f
output drop is acceptable (if applicable) [B7]
continuous load as applicable [B5]
2
0.7 for universal input voltage (85-265 VAC) or single
100/115 VAC (85-132 VAC) line voltage, and 0.75 for
single 230 VAC (185-265 VAC) line voltage designs.
Adjust the efficiency estimate accordingly, after
measuring the efficiency of the first prototype-board at
peak load and VAC
0.65 for typical application (adjust the number
accordingly after first proto-board evaluation)
IN
input capacitance [B14]:
AN-41
MIN
L
. [B11]
[B3, B4, B5]
O
[B6]
MIN
, VAC
MAX
and
• Select PeakSwitch from drop down list or enter directly
Select the device in the table below according to output power
and line input voltage.
Table 1. Output Power Table (See Data Sheet for Notes 1, 2 and 3).
• Enter V
• Enter core type (if desired) from drop down menu [B43]:
A suggested core size will be selected automatically by the
spreadsheet if none is entered.
• Build transformer
• Select key components (see Steps 5 through 10)
• Build prototype, test and iterate the design as necessary,
PKS603 P
PKS604 P
PKS604 Y/F
PKS605 P
PKS605 Y/F
PKS606 P
PKS606 Y/F
PKS607 Y/F
[B17]:
entering measured values into the spreadsheet where
estimates were initially used (e.g. efficiency, V
PRODUCT
[B25]:
0.5 V for Schottky diode
0.7 V for PN diode
Use 2 µF/W
(100/115 VAC) line voltage, if output voltage droop
is acceptable, or 3 µF/W
unacceptable.
Use 1 µF/W
265 VAC) high-line voltage.
D
– forward voltage drop of the output diode
OUTPUT POWER TABLE
3
Adapter
Cont.
PK
230 VAC ±15%
PK
13 W
23 W
35 W
31 W
46 W
35 W
68 W
75 W
for universal (85-265 VAC) or single
single 230 VAC for a single (185-
1
Adapter
117 W
126 W
Peak
32 W
56 W
56 W
60 W
79 W
66 W
PK
if output voltage droop is
2
Adapter
Cont.
16 W
23 W
21 W
30 W
25 W
45 W
50 W
9 W
85-265 VAC
1
MIN
Adapter
)
Peak
25 W
44 W
44 W
44 W
58 W
46 W
86 W
93 W
2