PC-R302-925 Microsemi Corporation, PC-R302-925 Datasheet - Page 5

• Manufacturer Part Number: PC-R302-925
• Description: 30 Watt Sine Wave Telephone Ring Generator
• Manufacturer: Microsemi Corporation

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Notes:
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SAFETY INSTRUCTIONS
considered as overload conditions, see Automatic Overload Control paragraph for device behavior.
Ix = external load current tied to R1. Typical R1 = 10KΩ, C1≥47uF/100V.
C2≥100uF/100V, L1=10µHy/2A (such as TOKO R622LY-100K, Coil Craft PCV-2-103-05, 3L COILS PKB0865-100K or similar).
Ix=external load current tied to R2. Typical R2=10KΩ.
complying with the earthed SELV or TNV requirements of the UL1950, Third edition.
For other countries, input voltage (nominal 48Vdc, tolerance 36-72Vdc) must be supplied by isolated DC source
complying with the earthed SELV or TNV requirements of the latest version of EN60950.
When output voltage is set to less than 80Vrms, ringing signal complies with M.2 requirements of IEC950.
DC input, AC Output, Test, Sync or the Inhibit terminals.
output.
When this filtering level is not required, C1 may be omitted and a short may replace L1.
When using C1>2200µF, ESR<0.05Ω @ 125 kHz, C2 and L1 are not required.
The DGND may be connected only to the V0, F0 and F1terminals. Do not connect the DGND to any point other than including any
FGND is a floating GND and can be connected to any system ground.
Do not connect a capacitor in parallel to load without a minimum series resistor equal to the impedance of this capacitor.
The PC-R302-925 is not protected against input reverse polarity.
R1
The use of C2 and L1 is advised for filtering the ring generator's input switching frequency noise from contaminating the ringing signal
When using an independent power source for the output DC Bias, C2 and L1 are not required.
When Vout=86Vrms, Z
Power Factor =COS(ATAN(1/2⋅π⋅F⋅RL⋅ C
C3 = 1÷10nF/500V may be added to reduce noise on the Sync and Test output terminals when FGND is floating.
V0 may be left unconnected or shorted to DGND if only two discrete output voltage levels are required
R2
Thermal characteristics were measured assuming connections made according to Typical Application 1, and vertical mounting.
The PC-R302-925 is designed to meet the EN55022 class B standard requirements with an external EMI filter.
For North America, input voltage (nominal 48Vdc, tolerance 36-60Vdc) must be applied by isolated DC source
DC input must be protected by UL Listed fuse rated maximum T2A, 250V (slow-blow 2A, 250V fuse).
When applicable, protection from excessive voltage on the output should be tested in end-use equipment.
For output voltage exceeding 80Vrms, compliance with the ringing signal requirements should be tested in end-use equipment.
max
max
=(Vcc
=(Vcc(min)-VOH) / Ix, R2
min
)-VOH) / Ix, R1
L
min =Voutmax
min
(According to UL1950, CSA C22.2 No. 950 and EN60950 Safety Standards requirements)
= (Vcc
min
= (Vcc(max)-VOL)/(IOL − Ix), IOL x VOL=13.5 mW
max
2
/Poutmax=86
-VOL)/(IOL − Ix), IOL x VOL=13.5 mW
L
)), Z
L
= Resistor (R
2
/30=246.5Ω in normal operation, Power Factor ≥0.5. Lower values of Z
LOW PROFILE 30 Watt Sine Wave Telephone Ring Generator
L
) in series with capacitor (C
max
, Vcc
max
max
L
, Vcc
)
=30V,
max
=30V,
.
PC-R302 Series
L
min are
PC-R302 Series