RDK-142 Power Integrations, RDK-142 Datasheet - Page 16

• Manufacturer Part Number: RDK-142
• Description: KIT REF DESIGN TOP HX FOR TOP258
• Manufacturer: Power Integrations
• Series: TOPSwitch®-HXr

Specifications of RDK-142

• Mfg Application Notes: TOPSwitch-HX Family Appl Note
• Main Purpose: AC/DC, Primary Side
• Outputs And Type: 2, Non-Isolated
• Power - Output: 35W
• Voltage - Output: 5V, 12V
• Current - Output: 2.2A, 2A
• Voltage - Input: 90 ~ 265VAC
• Regulator Topology: Flyback
• Frequency - Switching: 30kHz
• Board Type: Fully Populated
• Utilized Ic / Part: TOP258
• Product: Accessories & Kits
• Silicon Manufacturer: Power Integrations
• Kit Application Type: Displays
• Application Sub Type: LCD Monitor
• Kit Contents: Samples, Fully Functional Reference Board And Complete Documentation
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 596-1193

7 Design Spreadsheet
ACDC_TOPSwitchHX_09
0607; Rev.1.2; Copyright
Power Integrations 2007
ENTER APPLICATION VARIABLES
VACMIN
VACMAX
fL
VO
PO_AVG
PO_PEAK
n
Z
VB
tC
CIN
ENTER TOPSWITCH-HX VARIABLES
TOPSwitch-HX
Chosen Device
KI
ILIMITMIN_EXT
ILIMITMAX_EXT
Frequency (F)=132kHz,
(H)=66kHz
fS
fSmin
fSmax
High Line Operating Mode
VOR
VDS
VD
VDB
KP
Power Integrations
Tel: [phone] Fax: [phone]
www.powerint.com
INPUT
TOP258PN
128.00
35.00
100.0
5.00
0.80
0.50
3.00
1.00
5.63
0.50
0.70
0.69
265
90
50
12
H
INFO
Info
TOP258PN
OUTPU
T
35.00
100
Power
Out
1.534
1.766
H
66000
59400
72600
FF
5.63
UNIT
Volts
Volts
Hertz
Volts
Watts
Watts
%/100
Volts
mSeco
nds
uFara
ds
Univer
sal /
Peak
35 W /
50 W
Amps
Amps
Hertz
Hertz
Hertz
Volts
Volts
Volts
Volts
TOPSwitch_HX_090607: TOPSwitch-HX
Continuous/Discontinuous Flyback
Transformer Design Spreadsheet
RD-142
Minimum AC Input Voltage
Maximum AC Input Voltage
AC Mains Frequency
Output Voltage (main)
Average Output Power
Peak Output Power
Efficiency Estimate
Loss Allocation Factor
Ensure proper operation at no load.
Bridge Rectifier Conduction Time Estimate
Input Filter Capacitor
115 Doubled/230V
48W
External Ilimit reduction factor (KI=1.0 for
default ILIMIT, KI <1.0 for lower ILIMIT)
Use 1% resistor in setting external ILIMIT
Use 1% resistor in setting external ILIMIT
Only half frequency option available for P, G
and M package devices. For full frequency
operation choose Y package.
TOPSwitch-HX Switching Frequency: Choose
between 132 kHz and 66 kHz
TOPSwitch-HX Minimum Switching Frequency
TOPSwitch-HX Maximum Switching Frequency
Reflected Output Voltage
TOPSwitch on-state Drain to Source Voltage
Output Winding Diode Forward Voltage Drop
Bias Winding Diode Forward Voltage Drop
Ripple to Peak Current Ratio (0.3 < KRP < 1.0
: 1.0< KDP<6.0)
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