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PQ60012QPA60PR2 Datasheet(PDF) 10 Page - SynQor Worldwide Headquarters |
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PQ60012QPA60PR2 Datasheet(HTML) 10 Page - SynQor Worldwide Headquarters |
10 / 13 page Product # PQ60012QPA60 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2QP621F Rev. C 3/23/07 Page 10 T Technical S echnical Specification pecification Input: Input: Output: Output: Current: Current: PPackage: ackage: 36-75 V 36-75 V 1.2 V 1.2 V 60 A 60 A Quarter-brick Quarter-brick across the output (pins 9 and 5) to determine when it should trig- ger, not the voltage across the converter’s sense leads (pins 8 and 6). Therefore, the resistive drop on the board should be small enough so that output OVP does not trigger, even during load transients. OUTPUT VOLTAGE TRIM (Pin 7): The TRIM input permits the user to adjust the output voltage across the sense leads up or down according to the trim range specifications. To decrease the output voltage, the user should connect a resistor between Pin 7 and Pin 6 (SENSE(-) input). To increase the output voltage, the user should connect a resistor between Pin 7 and Pin 8 (SENSE(+) input). For a desired change of the nominal output voltage, the value of the resistor should be Figure C graphs the relationship between the trim resistor value and Rtrim-up and Rtrim-down, showing the total range the output voltage can be trimmed up or down. Figure C: Trim Graph for 1.2Vout module Note: the TRIM feature does not affect the voltage at which the output over-voltage protection circuit is triggered. Trimming the output voltage too high may cause the over-voltage protection cir- cuit to engage, particularly during transients. It is not necessary for the user to add capacitance at the Trim pin. The node is internally bypassed to eliminate noise. Alternative Trim Equation: When ordering this option (see ordering information page) Tyco compatible trim equations are applicable (range from -10% to +10%, see Figure D) TRIM UP: TRIM DOWN: Where Figure D: Alternative Trim Graph for 1.2Vout module Total DC Variation of Vout: For the converter to meet its full specifications, the maximum variation of the DC value of Vout, due to both trimming and remote load voltage drops, should not be greater than that specified for the output voltage trim range. PROTECTION FEATURES Input Under-Voltage Lockout: The converter is designed to turn off when the input voltage is too low, helping avoid an input system instability problem, described in more detail in the appli- cation note titled “Input System Instability”. The lockout circuitry is a comparator with DC hysteresis. When the input voltage is ris- ing, it must exceed the typical Turn-On Voltage Threshold value (listed on the specification page) before the converter will turn Rtrim = VNOM - VDES - 1 VDES where VNOM = Nominal Voltage VDES = Desired Voltage (Vertical bars indicate absolute value) (kW) 0 5 10 15 20 25 30 35 40 45 50 55 60 1.08 1.12 1.16 1.2 1.24 1.28 1.32 Desired Output Voltage Rtrim-up = 0.6 x D% D% 9.769 x VNOM x (100 + D%) 1299.1 33.49 (kW) [] Rtrim-down = D% 1299.1 33.49 (kW) [] VNOM VDES – VNOM x 100 D% = 10 100 1000 10000 1.08 1.12 1.16 1.20 1.24 1.28 1.32 Desired Output Voltage |
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