Microchip SR10 Bedienungsanleitung
Lies die bedienungsanleitung für Microchip SR10 (4 Seiten) kostenlos online; sie gehört zur Kategorie Nicht kategorisiert. Dieses Handbuch wurde von 4 Personen als hilfreich bewertet und erhielt im Schnitt 3.8 Sterne aus 2.5 Bewertungen. Hast du eine Frage zu Microchip SR10 oder möchtest du andere Nutzer dieses Produkts befragen? Stelle eine Frage
Seite 1/4
Supertex inc.
Supertex inc.
www.supertex.com
SR10DB1
Doc.# DSDB-SR10DB1
A040113
- DC Output +
24V
12V
6V
ADJ
HIGH EVOLTAG
Supertex SR10DB1
C
OUT
AC Input
90-275VRMS
50/60Hz
H
N
+
–
Load
R
FB1
and R
FB2
optional for output voltages other
than 6, 12, or 24V. Adjustment range is 6 - 28V.
Pre-configured for 9V. Pads for 0603 and 0805.
DC Output:
6, 12, 24V or
adjustable 6 - 28V.
Jumper-selectable full-wave
or half-wave rectification.
Both jumpers must be in the
same position, left or right.
Jumper-selectable output voltage.
Jumper must be present. When in
the ADJ position, R
FB1
and R
FB2
must be present.
Output minus is
connected to AC line
neutral when configured
for half-wave rectification.
R
FB1
R
FB2
D
2
D
1
D
4
D
3
R
BL
R
LIM
C
S
D
OUT
C
FB
One lead must always
be in this position
Socketed components.
Accomodates various capacitor sizes
IC
1
H Input N AC
Rect
Half
Full
V
OUT
Board Layout and Connection Diagram
Inductorless Switching
Power Supply Demoboard
Specications
Parameter Value
AC Input
90VAC to 275VAC
50Hz to 60Hz
Output voltage
6V, 12V, 24V ±10%
or 6-28V using divider
Output current
1
up to 50mA
No-load input power
1
as low as 20mW
Efciency
1
up to 75%
Actual board size 88mm x 28mm
Introduction:
The Supertex SR10 is an inductorless switching power sup-
ply controller intended for operation directly from a rectied
120/240VAC line. Due to the capacitor-coupled, switched
shunt topology (CCSS), it exhibits low standby power and
good efciency while employing no magnetics nor high volt-
age electrolytic capacitors.
To meet a wide variety of applications, the SR10DB1 is
highly congurable. Many components are socketed. Half or
full-wave rectication is jumper-selectable. Output voltage is
jumper-selectable to 3 xed voltages or may be set anywhere
in the range of 6 - 28V using an on-board feedback divider.
AC Input (H and N)
Connect to the AC line. The ‘H’ terminal should be connected
to the AC line hot conductor. The ‘N’ terminal should be con-
nected to the AC line neutral conductor. When congured for
half-wave rectication, the N terminal is connected to the DC
output minus (–) terminal.
DC Output (+ and –)
Connect the load to these terminals. Do not connect earth-
grounded loads or test equipment without using an isolation
transformer on the AC line.
Output voltage is jumper-selectable at 6, 12, or 24V, or it
may be set in the range of 6 - 28V using the R
FB
feedback
divider and setting the jumper to ADJ.
Notes:
1. Dependent upon conguration and degree of transient protection.
2
SR10DB1
Supertex inc.
www.supertex.com
Doc.# DSDB-SR10DB1
A040113
Schematic
D
1-4
1N4001
R
LIM
C
S
R
BL
fixed 6, 12, 24, or 9V
(adjustable from 6 - 28V via R
FB1
)
V
OUT
C
OUT
1.0mF
R
FB1
422kΩ
D
OUT
1N4001
V
IN
90-275VAC
50-60Hz
R
TN
OUT
SR10
PGND
SH
FB
AGND
D6
D12
D24
C
FB
470pF
24V
12V
6V
ADJ
V
OUT
R
FB2
68.1kΩ
Rect
Half Full
D
1
D
3
D
4
D
2
1
8
7
6
5
4
32
Designation Description Value Rating Mfg PN
R
LIM
Resistor, fusible 2W —22Ω any
R
BL
Resistor 1/4W —4.7MΩ any
R
FB1
Resistor 1/4W —422kΩ any
R
FB2
Resistor 1/4W —68.1kΩ any
C
S
Capacitor, lm 220nF to 2.2µF 275VAC,X2 —any
C
OUT
Capacitor, alum 220µF min —35V any
C
FB
Capacitor, ceramic NPO 470pF 6V —any
D
1 - 4
Rectier any—1A, 50V 1N4001
D
OUT
Rectier any—1A, 50V 1N4001
IC
1
CCSS regulator — — Supertex SR10
Bill of Materials
Socketed Components
The SR10DB1 is provided with all components pre-installed.
Other components may be substituted for the on-board com-
ponents to meet other requirements.
Refer to the above schematic and BOM, and the drawing
and photo on page 1 to determine the proper locations for
the components.
Output Voltage
Fixed output voltages of 6V, 12V, or 24V may be selected by
setting the appropriate jumper on the V
OUT
header.
For other output voltages, the on-board resistive feedback
divider may be used to provide any voltage in the range of
6 - 28V. To maintain a minimum 15µA through the feedback
divider, only R
FB1
should be changed.
R
FB1
= R
FB2
V
OUT
-1 = 68.1kΩ
V
OUT
-1
V
FB
1.25V
Output Current (C
S
selection)
Output current is primarily dependent on input voltage, C
S
value, and rectication (full or half). Given the minimum input
voltage and choice of rectication, the minimum value of C
S
3
SR10DB1
Supertex inc.
www.supertex.com
Doc.# DSDB-SR10DB1
A040113
is given by the following equations. Don’t forget to take toler-
ances into account. The SR10 is powered by V
OUT
, so the
available output current is reduced by the SR10’s operating
current (150µA nom, 200µA max). Current may also be re-
duced ~5% due to losses.
For standard capacitance values, see the table on page 4.
Full-wave:
C
S
≥
I
OUT
4ƒ
IN
(V
IN
√2 - V
OUT
- 3V
D
)
Half-wave:
C
S
≥
I
OUT
ƒ
IN
(2V
IN
√2 - V
OUT
- 2V
D
)
where: I
OUT
is the maximum output current
f
IN
is the AC line frequency
C
S
is the series cap on the AC line
V
IN
is the RMS AC line voltage
V
OUT
is the DC output voltage
V
D
is the diode forward voltage (~700mV)
Limiting Resistor (R
LIM
)
The limiting resistor in series with the AC line is to protect
against transients on the AC line. For safety reasons it is
fusible and is the most upstream component on the AC line.
Higher values provide greater protection but at the expense
of higher losses.
P
LIM
≈ (V
IN
• 2πƒ
IN
• C
S
)
2
• R
LIM
Output Capacitor (C
OUT
)
The output capacitor serves 2 functions - it supplies the load
when the shunt is on, and helps absorb transients on the AC
line. The supplied value may be lowered but at the expense
of higher ripple voltage and increased output voltage during
a transient.
Input Power Measurements
The high ratio between the imaginary and real power com-
ponents makes power measurements difcult. To make ac-
curate measurements of real power, the imaginary compo-
nent may be eliminated by measuring input voltage after C
S
.
This excludes C
S
losses, but AC rated lm capacitors exhibit
very low losses, so the error is minimal.
Since the PCB is laid out with R
LIM
upstream of C
S
for safety
reasons, it must be relocated after C
S
if R
LIM
losses are to be
included.
Do not connect earth-grounded instruments when operating
off the AC line! Use either battery-powered equipment, high
voltage differential probes, or an isolation transformer on the
AC line. Note that many Variacs (variable transformers) do
not provide isolation.
Ideally, R
BL
should be removed. Its contribution to loss is ap-
proximately V
IN
2
/ R
BL
Since the input current is not a perfect sine wave, real power
cannot be obtained by simply multiplying RMS input current
by RMS input voltage. One way to make correct measure-
ments is by multiplying instantaneous current by instanta-
neous voltage on a time-point basis and taking the average
over an integer number of 50/60Hz cycles. At low load cur-
rents the shunt turns off only occasionally, requiring a long
time window for accurate power measurements.
This measurement technique may be performed on most
digital oscilloscopes. When taking the average, be sure to
window the average over an integer number of cycles.
Driving LEDs
The SR10 can be congured to provide a constant-current
output to drive LEDs. A current sense resistor (R
SNS
) is used
to convert LED current to the 1.25V feedback voltage re-
quired by the SR10.
I
LED
=
1.2V
R
SNS
R´
LIM
C
S
V
IN
R
LIM
short
Measure
V
IN
here
R
BL
current
probe
I
IN
C
OUT
1.0mF
Z
OVP
27V
D
OUT
1N4001
–
OUT
SR10
PGND
SH
AGND
D6
D12
D24
FB
C
FB
470pF
24V
12V
6V
ADJ
V
OUT
R
SNS
1
8
7
6
5
4
32
+
R
B
2kΩ
Set V
OUT
to ADJ
Replace R
FB2
with 2 resistors
Replace R
FB1
with a Zener
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | SR10 |
Brauchst du Hilfe?
Wenn Sie Hilfe mit Microchip SR10 benötigen, stellen Sie unten eine Frage und andere Benutzer werden Ihnen antworten
Bedienungsanleitung Nicht kategorisiert Microchip
10 Juni 2025
9 Juni 2025
9 Juni 2025
9 Juni 2025
9 Juni 2025
9 Juni 2025
9 Juni 2025
9 Juni 2025
9 Juni 2025
9 Juni 2025
Bedienungsanleitung Nicht kategorisiert
- Kemo
- Silhouette
- Everdure
- Bebob
- Lawn Star
- Sirius
- IPort
- Eminence
- Europalms
- K&M
- Stokke
- Bluesound
- Simplicity
- Focusrite
- Alan
Neueste Bedienungsanleitung für -Kategorien-
15 Juni 2025
15 Juni 2025
15 Juni 2025
15 Juni 2025
15 Juni 2025
15 Juni 2025
15 Juni 2025
15 Juni 2025
15 Juni 2025