RD5 查看數據表（PDF） - Power Integrations, Inc
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RD5
Power Integrations, Inc
RD5 Datasheet PDF : 12 Pages
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RD5
Component Listing
Reference
Value
Part Number
Manufacturer
BR1
C1
C2
C3
C4
C5
C6
C7*
D1
D2
D3
L1
L2
R1
R2
R3
T1**
U1
U2
VR1
VR2
F1
600 V, 2 A
47 µF, 400 V
560 µF, 35 V
220 µF, 35 V
0.1 µF, 50 V
47 µF, 10 V
0.1 µF, 250 VAC, X
1.0 nF, 400 VAC, Y1*
600 V, 1A, UFR
100 V, 5A, Schottky
75 V, Switching
3.3 µH, 6.5 A
19 mH, 400 mA
39 Ω, 1/4 W
150 Ω, 1/4 W
6.8 Ω, 1/4 W
200 V Zener TVS
11 V Zener
3.15 A, 250 VAC
2KBPC06M
General Instrument
381LX470M400H012
Cornell-Dubilier
ECA-1VFQ561
Panasonic
ECE-A1VGE221
Panasonic
RPE131R104M50
Murata
ECE-A1AG470
Panasonic
F1772-410-2000
Roederstein
DE1110E102M ACT4K-KD Murata
(or WKP102MCPE.OK Roederstein)
(or PME294RB4100M Rifa)
UF4005
General Instrument
50SQ100
International Rectifier
1N4148
National Semiconductor
622LY-3R3M
Toko
ELF15N005A
Panasonic
5043CX39R00J
Philips
5043CX150R0J
Philips
5043CX6R800J
Philips
TRD5
Custom
TOP224P
Power Integrations
PC817A
Sharp
P6KE200
General Instrument
1N5241B
Motorola
19372K, 3.15A
Wickman
Figure 5. Parts List for the RD5 (* Two Series Connected, 2.2 nF, Y2-Capacitors Such as Murata DE7100F222MVA1-KC can replace C7).
** T1 is available from Premier Magnetics (714) 362-4211 as P/N POL-12017, and from Coiltronics (561) 241-7876 as P/N CTX00-13742.
power secondary winding is rectified and filtered by D2, C2,
L1, and C3 to create the 12 V output voltage. R2 and VR2
provide a slight pre-load on the 12 V output to improve load
regulation at light loads. R2 also provides bias current for Zener
VR2 to improve regulation. The bias winding is rectified and
filtered by D3 and C4 to create a bias voltage to the TOP224P.
L2 and Y1-capacitor C7 attenuate common-mode emission
currents caused by high-voltage switching waveforms on the
DRAIN side of the primary winding and the primary to secondary
capacitance. L2 and C6 attenuate differential-mode emission
currents caused by the fundamental and harmonics of the
primary current waveform. C5 filters internal MOSFET gate
drive charge current spikes on the CONTROL pin, determines
the auto-restart frequency, and together with R1 and R3,
compensates the control loop.
The circuit performance data shown in Figures 6-18 were
measured with AC voltage applied to the RD5.
Load Regulation (Figure 6) – The amount of change in the DC
output voltage for a given change in output current is referred
to as load regulation. The 12 V output stays within ±1% from
10% to 100% of rated load current. The TOPSwitch on–chip
overtemperature protection circuit will safely shut down the
power supply under persisting overload conditions. Below
minimum load, the 12 V output rises slightly due to the
TOPSwitch minimum duty cycle.
Line Regulation (Figure 7) - The amount of change in the DC
output voltage for a given change in the AC input voltage is
called line regulation. The maximum change in output voltage
is within ± 1%.
Efficiency (Line Dependent) – Efficiency is the ratio of the
output power to the input power. The curves in Figures 8 and 9
show how the efficiency changes with input voltage.
Efficiency (Load Dependent) – The curves in Figures 10 and 11
show how the efficiency changes with output power for 115
VAC and 230 VAC inputs.
Power Supply Turn On Sequence – The internal switched, high-
voltage current source provides the initial bias current for
TOPSwitch when power is first applied. The waveforms shown
35 A
7/97
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