QP SERIES
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QP SERIES Miniature DC/DC Converters 5 to 500Vdc, Isolated, 50 Watt Regulated Outputs Wide Inpt Voltage Ranges 4.9 - 9 Vdc / 9 - 18 Vdc / 18 - 36 Vdc / 36 - 72 Vdc (NEW) Isolated, Regulated Outputs High Efficiency, Low Ripple 0°C to +85°C Operating Temperature, Base Plate Miniature - Low Profile (2.5" x 1.55" x 0.5") - PCB Mountable High Reliability DC-DC Converters The QP Series of Miniature Power DC/DC Converters operates over wide input voltage ranges (4.5-9Vdc, 9-18Vdc, 18 - 36 Vdc, and 36 - 72 Vdc) while maintaining tight output regulation and low ripple. Safety Features of QP Modules include: Overtemperature, Input Under/Over voltage, Output Overcurrent and Short Circuit Protection. Units in QP Series also feature Remote Shutdown, Trim capability, 3Vref, External Bias and do not use OptoCouplers in the feed-back loop. Fixed Frequency operation enables parallel connection for higher power requirements. QP Series units are fully encapsulated for rugged operation. APPLICATIONS: Commercial, industrial and Military applications, process control, distributed power, test equipment, telecommunications. FEATURES: • Input Voltage Ranges: 4.5 - 9 Vdc, 9-18Vdc, 18-36Vdc., and 36 - 72 Vdc. For additional input voltages consult factory. • Output Voltage: 5Vdc to 500Vdc. 11 standard voltages, custom output voltages are also available. • Line and Load Regulation: from 0.5% Vout • Efficiency: Up to 90% • Low Ripple • Input Under/Over Voltage Protection • Output Overcurrent and Short Circuit Protection • Output Voltage Clamp: typ. 120% Vout • Thermal Shutdown • Trim Capability: - 5% Vout • 3Vref output pin • Remote Shutdown • External Bias pin for capacitor charging applications • 0°C to +85°C standard operating base plate temperature. Expanded operating temperature also available • 2500 Vrms In/Out Isolation • Fully Enc

* For these units, Pout max is linearly derated at 6.7 W/V for input voltages lower than 10.5V **Proper thermal management required: Base Plate Temp. <85°C (See Application Notes) ***10% minimum load required at any time

** Proper thermal management required, Base Plate Temp <85° C (See Application Notes) *** 10% minimum load required at any time ELECTRICAL CHARACTERISTICS: Input OV/UV Protection FIG. 2 Trim Down typical resistor values For Trim Up: Consult Factory 800-431-1064 Remote Shutdown: Converter is turned off when Pin # 2 (SHDN) is clamped to Pin # 1 within less than 0.4 V

FIG. 3 Non Isolated ShutdownFig. 4 Isolated Shutdown• External Bias Function Ex.B Voltage = 17...20Vdc; Ex.B Current = 20mA (typical) External Bias should be used in Capacitor Charging applications. The QP unit will not start-up under a short-cuicuit condition because the Internal Bias Supply cannot develop the required start-up voltage. To charge up a large capacitor, an external bias voltage should be used only until the output voltage, Vout, reached 90 - 95% of its nominal value and therefore the internal bias voltage has come up and is able to sustain converter operation. Note that...

• Fully Encapsulated NOTES: • All specifications are given under following conditions: +25°C ambient, 6Vdc (6QP Series), 12Vdc (12QP Series), 24Vdc (24QP Series), and 48V (48QP Series) Input at Full Load • For correct operation, a 10% maximum load should be maintained at all times • For expanded temperature range or non-standard features, please consult factory. Note:The recommended torque for mounting screws is 3 to 5 In-Lbs. Typical weight: 75 Grams Dimensions are in inches FUNCTION -IN SHDN VREF TRIM EX. B +IN +OUT -OUT PIN DESCRIPTION Pin # 1 (-IN): Negative Input Voltage to the unit,...

PART TI = THERMAL INTERFACE Alloy Aluminum Substrate Thermal Conductivity (BTU-in/hr sq.ft. ° F): 1530 Coefficient of Thermal Expansion (25-100°C, 10 {to the -6th} in-in/°F): 13.1

Hardness, Brinnell B: 23 Endurance Limit, psi: 5000 Standard Thickness (inches): .002 For immediate engineering assistance or to place an order: Call Toll Free: 800-431-1064 PICO Electronics, Inc. 143 Sparks Ave. Pelham, NY 10803-1810 Tel: 914-738-1400 or Fax: 914-738-8225