Product Family of Capacitor Chargers PS-17XX for 1500J/Sec in the range 500Vac to 1,000Vac PS-22XX for 2200J/Sec in the range 500Vac to 1,000Vac

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1 Product Description Capacitor charger power supplies from Digital Power are designed to meet the exacting requirements of medical, aesthetic, and industrial pulsed energy systems. The modular design of these highly efficient and flexible devices provides lower costs, high reliability, and quicker delivery times for a wide variety of OEM applications. Based on the standard size modular platform, the capacitor chargers are ideal for medical, dental, industrial, aerospace, and defense applications. These applications include flashlamp pumped laser systems, excimer laser systems, irradiation devices, inspection devices, diagnostic and therapeutic equipment, laser aesthetic systems, medical holmium YAG lasers, pulsed UV curing systems, sterilization systems, and many other products, including those that deliver bursts of pulsed energy. Key Features Compact size, based on the standard 12.7 x 5.75 x 4.05 in (32 x 14 x 10 cm) modular platform Low EMI, high EMI-RFI immunity Increased efficiency of approximately 8% over existing chargers, providing reduced temperature rise and higher reliability Increased frequency and 50% duty cycle, providing fast response and decreased noise Automatic shutdown if the output voltage is equal to or less than 80% of its maximum rate for more than 5 seconds, providing a higher charge discharge cycle Fully isolated input to output, allowing connection directly to an AC line Open circuit, short circuit, arc, over-temperature, and over-voltage protection Load fault watchdog timer Meets IEC rd edition safety requirements for medical electrical systems Customized voltage and power output up to 3KW available upon request Specifications INPUT Input voltage Frequency Power factor Inrush current Efficiency Vac 47 63Hz 0.99 typical at full load 220Vac 88% typical at high-line; 84% at low-line OUTPUT Output voltage Configurable from 500Vac to 1,000Vac Output power PS-17XX: 1,500W PS-22XX: 2,200W Load capacitance Line regulation Load regulation Ripple noise Output voltage accuracy Hold-up time Switching frequency Over-current/short circuit protection Over-voltage protection Temperature protection Polarity 26,000µF (nominal) ±0.1% max ±0.5% max 2% p-p 20 MHz bandwidth with 1µF ceramic and 10 electrolytic on measure point ±1% of setting from 30V to maximum rated output voltage 5m Sec 60KHz 105% to 110% of maximum output current 110% to 115% of maximum output voltage Latch shutdown due to extensive ambient temperature Positive 1

2 PS-17XX Voltage and Charge Time Model P-out max V-out max Charge time to max V-out Load capacitator reference PS J/Sec 500V 2.10 Sec 26,000µF PS J/Sec 600V 3.12 Sec 26,000µF PS J/Sec 700V 4.24 Sec 26,000µF PS J/Sec 800V 5.54 Sec 26,000µF PS J/Sec 1,000V 8.66 Sec 26,000µF PS-22XX Voltage and Charge Time Model P-out max V-out max Charge time to max V-out Load capacitator reference PS J/Sec 500V 1.47 Sec 26,000µF PS J/Sec 600V 2.12 Sec 26,000µF PS J/Sec 700V 2.89 Sec 26,000µF PS J/Sec 800V 3.78 Sec 26,000µF PS J/Sec 1,000V 5.90 Sec 26,000µF INTERFACE Logic connector V-out program V-out monitor V-out peak monitor Inhibit ENVIRONMENTAL CONDITIONS Operating temperature Storage Humidity Cooling MTBF 15-pin D-type End of charge status Over voltage/temperature fault 32 F to 104 F (0 C to 40 C) 4 F to 185 F ( 20 C to 85 C) 10% to 90% RH non-condensation internal fans 500,000 hours per Bellcore B332 Gb 86 F (30 C) REGULATORY Current leakage < 300µA Isolation Main-to-Earth ground: 1,500Vac and 2,121Vdc Main-to-Secondary: 4,000Vac and 5,656Vdc EMI EN Class A Group 1 Safety IEC rd edition and CE Mark MECHANICAL Size (L x W x H) AC input connector Main AC earth HV output connector Logic Interface connector Weight 12.7 x 5.75 x 4.05 in (32 x 14 x 10 cm) Terminal block GND stud, min. 14AWD wire MHV male and coax cable rated for at least 150% of max. rated 15 pin D type connector, female 8.82 lbs (4Kg) Attention: Unit generates hazardous voltage (500Vac to 1,000Vac). Installation and services must performed by qualified service personnel. 2

3 PS-17XX/22XX Series Pin Assignments Pin # Signal Name Remarks 1 Inhibit (ON/OFF) 2 Fault warning 3 Sum fault 4 HVON 5 Voltage program 6 Fault indication Output inhibit to ON and OFF utilizing electrical signal or by dry contact V or short: HV is On 2 15V or open: HV is Off Open collector, 10K pull-up resistor referenced to 15V. Active-low occurs during over-voltage or over temperature conditions. internal fault is detected. the unit is enabled and has no internal fault. Output is programmed externally with a 0 to 10V signal for 0 to 100% of rated output voltage. Input approximately 100KOhm. the output is less than 80% of its output rate for more than a few seconds. If unit shuts down, input voltage is recycled upon restart. 7 Voltage peak Peak hold circuit output voltage is monitored at a hold time of approximately 3 Sec for 0V to 10V and for 0V to maximum voltage. 8 Voltage monitor Monitor output voltage 0 to 10V for 0 to V-out max. 9, 11, 12 15V reference Provide +15V 50mA output. 10 Not connected Not connected. 13 End of charge indication Open Collector LOW indication when the output voltage is within 5% of the programmed voltage level. 14, 15 Chassis GND Connected to all output returns and internally tied to chassis ground. 3

4 Medical Telecom Industrial Outline Drawing 4

5 Principle of Operation The operation of the capacitor charger is defined by the charge to reach the specified voltage and capacitance and the discharge time. The capacitor charger has three modes of operation, as shown in the following figure. Figure 1: Voltage vs. charge/discharge cycles The rate at which the capacitor is charged and discharged is called the repetition rate, T, and may vary from 0.01Hz for large capacitor banks to a few KHz. A capacitor charger has two power ratings, expressed in Joules per second (J/S) The peak power rating is used when calculating the charge time. The average power is used to determine the maximum repetition rate, as shown in the following figure. Figure 2: Charge/discharge time The charge time is calculated by using the formula: T (second) = [½ CV²/Ppeak] Where: T = Charge time in seconds C = Capacitor in farads V = Charge voltage required P (peak) = Unit peak power (J/S) The average output power depends on the discharge mode energy and repetition rate of the load: P (average) (J/S) = W (load)/t (w=energy delivered per charging cycle T=repetition rate) 5