SWG75 SERIES DC/AC single output ring generator • • • • • • • • • Provides 75VA of ringer output power Typical efficiency 78% Short circuit protection Operating temperature up to 70°C Internal sine wave reference Remote ON/OFF control Opto-isolated cadencing ON/OFF control Peak output DC biased current capability Stand-offs for optional heatsink mounting The SWG75 ring current generator series of DC/AC inverters offer 75VA of output power with industry standard footprints and configurations. The design is specifically tailored for PABX system applications to ensure ease of implementation in customer applications. These special features include cadencing output ON/OFF, peak output DC biased current capability at off-hook transition. [ 2 YEAR WARRANTY ] SPECIFICATION All specifications are typical at nominal input, full load at 25°C unless otherwise stated GENERAL SPECIFICATIONS OUTPUT SPECIFICATIONS Nominal voltage 75VAC Voltage accuracy No load ±3.0V Load regulation NL to FL resistive ±2.0% Line regulation Low line to high line ±2.0% Load impedance Resistive load (See Note 1) Capacitive load (See Note 1) Output frequency 2.2A Output ripple and noise Switching to 20MHz Output ripple frequency Full load Resistive load 5V pk-pk 180kHz, nominal 48VDC nominal Input current 36 to 60VDC Pi network 48VDC input model Reference input impedance PAGE 176 Input/output Switching frequency Fixed 500VDC 500VDC 1GΩ 90kHz, typical Aluminium with plastic non-conductive base Material flammability UL94V-0 Weight (Including heatsink) MTBF MIL-HDBK-217F @ 25°C nominal input voltage 450g (15.8oz) 100,000 hours Thermal performance Operating temperature See curve (ambient) Non-operating –40°C to +85°C Relative humidity Non-condensing 10% to 95% RH Altitude Operating Non-operating 10,000 feet max. 30,000 feet max. Vibration 5Hz to 500Hz 3A max. @ 36VDC Input filter Response time Isolation resistance ±2V max. INPUT SPECIFICATIONS Remote ON/OFF Logic compatibility Input/output Input/remote control 5.0% max. 1.0A DC offset Input undervoltage (output clipped) Isolation voltage Case material 75% typ. ENVIRONMENTAL SPECIFICATIONS Output current Input voltage range Resistive load 25Hz ±2Hz Maximum output current Total harmonic distortion 75Ω 82 bells Efficiency 34VDC max. Internal sine-wave reference oscillator (See Note 4) Opto-isolated control inputs <100ms and start from positive going zero crossing 2.4G rms (approx.) TELEPHONE RING GENERATORS | 75VA DC/AC 75VA DC/AC ring generator INPUT OUTPUT OUTPUT OUTPUT VOLTAGE VOLTAGE FREQUENCY CURRENT (RMS) 48VDC 75VAC 25Hz 1A PEAK OUTPUT TYPICAL MODEL NUMBER DC CURRENT 3 4 5 (5) EFFICIENCY 480mA Notes 1 2 (2) 78% SWG75-48S75C01 0.890 (22.606) 1 bell = 3kΩ in series 1.2µF, 82 bells = 36Ω in series 98µF. Peak output DC current is the DC biased current flowing through the output. Maximum duration is 1 second. Metal case (pin 7) should either be tied to +INPUT (pin 4) or -INPUT (pin 3) directly or through a capacitor (>10nF). Remote pins are inputs of an opto-isolator, with an internal 330Ω 1/4W resistor in series. SWG75-48S75C01/P has the same input and output specifications except the remote control logic is reversed. 1.280 (32.512) PIN DIA. TYP. 0.040 (1.016) 0.030 (0.762) 0.220 (5.613) 5.500 (139.700) 0.625 (15.875) 4.300 (109.220) PROTECTION Short circuit protection Indefinite Short circuit input current 48VDC, 80mA max. Overvoltage protection None Overcurrent protection 2.2A peak bouncing mode Undervoltage protection 3.500 (88.900) 3.000 (76.200) 0.375 (9.525) BOTTOM VIEW None ALL DIMENSIONS IN INCHES (mm) PIN CONNECTIONS PIN NUMBER PIN NAME FUNCTION 1 No Pin ----- 2 No Connection No Connection 3 - Input Negative Input 4 + Input Positive Input 5 No Connection No Connection 6 No Connection No Connection 7 FG (3) Pin 14 330R 1/4W Ic 6 Pin 13 Metal Case 8 No Connection No Connection 9 Return Output Common 10 75V Output 11 No Connection No Connection 12 No Connection No Connection 13 - Remote Remote Return 14 + Remote Remote Input Internal sine wave reference On MODEL I SWG75-48S75C01 SWG75-48S75C01/P (5) C OUTPUT 0mA ON 10 to 20mA OFF 0mA OFF 10 to 20mA ON http://www.artesyn.com Remote Off Control T on T off T on = 1 cycle max. T off = 1 cycle max. Output PAGE 177 75VA DC/AC | TELEPHONE RING GENERATORS 75VA DC/AC ring generator Application notes 1 Automatic zero crossing recover after short circuit removed. Internal sine wave reference Short circuit removed Short circuit occurs here Automatic recovery time <2 cycle maximum Output 2 Examples of DC biased operation. 2.1 Non-biased operation fuse +48Vin R1 Vin Vout Resistive / capacitive loading power factor 0V 0V Vin R2 C (See derating curve) Return 1 Power Factor = 1+ 1 ( (1 + R1/R2 ) 2πfCR1 + 2πfCR2 2.2 Negative DC Biased operation. 0V -48Vin Capacitive loading power factor R (See derating curve) C Fuse 0V Vin Vout -48Vin Vin Return (See Note 2 for DC biased current condition) 1 Power factor = 1+ ( 1 2πfCR ) 2 2.3 Positive DC biased operation. Fuse +48Vin Vin Vout 0V Vin Return Capacitive loading power factor +48V 0V R C PAGE 178 (See derating curve) (See Note 2 for DC biased current condition) ) 2 TELEPHONE RING GENERATORS | 75VA DC/AC 75VA DC/AC ring generator Application notes continued 3 For optimal thermal performance conforming to derating curve, the module should be installed vertically. System board Heatsink Air flow direction Thermal derating curves (nominal input condition) Fan cooling with built-in heatsink: Free air convection a b c d a b c d = = = = Free air convection 75 LFPM 225 LFPM 500 LFPM RESISTIVE LOADING (power factor = 1.0) a 75W 70W b c d 75VA 70VA 60W 60VA 50W 50VA CAPACITIVE LOADING (power factor = 0.8) a = = = = Built-in heatsink Heatsink of 1°C/W Heatsink of 0.5°C/W No heatsink CAPACITIVE LOADING (power factor = 0.5) b c d a 75VA 70VA 40VA FAN COOLING WITH 40VA FAN COOLING WITH 30W BUILT-IN HEATSINK 30VA BUILT-IN HEATSINK 30VA BUILT-IN HEATSINK 0W 20VA 80°C 0°C 10°C 20°C 30°C 40°C 50°C 60°C 70°C 80°C 90°C 80°C 0°C 10°C 20°C 30°C 40°C 50°C 60°C 70°C 80°C 90°C RESISTIVE LOADING (power factor = 1.0) d a b 80°C 10VA 0VA 0°C 10°C 20°C 30°C 40°C 50°C 60°C 70°C 80°C 90°C AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) 75W 70W c 75VA 70VA 60W 60VA 50W 50VA CAPACITIVE LOADING (power factor = 0.8) a d b AMBIENT TEMPERATURE (°C) c 75VA 70VA CAPACITIVE LOADING (power factor = 0.5) a 50VA 40VA FREE AIR 40VA FREE AIR 30W CONVECTION 30VA CONVECTION 30VA CONVECTION 20VA 75°C 0W 0°C 10°C 20°C 30°C 40°C 50°C 60°C 70°C 80°C 90°C 20VA 75°C 10VA 0VA c d FREE AIR 10W b 60VA 40W 20W 6 20VA 10VA 0VA d 50VA FAN COOLING WITH 10W c 60VA 40W 20W b 0°C 10°C 20°C 30°C 40°C 50°C 60°C 70°C 80°C 90°C AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) 75°C 10VA 0VA 0°C 10°C 20°C 30°C 40°C 50°C 60°C 70°C 80°C 90°C AMBIENT TEMPERATURE (°C) http://www.artesyn.com PAGE 179 DS_SWG75_20000101.PDF Data Sheet © Artesyn Technologies® 2000 The information and specifications contained in this data sheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein.