36 NAT1000x20Rxx 8.5-18V Input, 0.75-5.5V,20A Output Leading the Advancement of Power Conversion 20A Through-hole Point-of-Load Converter Features High efficiency, 91% (12Vin, 3.3V/20A) Excellent thermal performance Over-voltage, over-current, short-circuit, and over temperature protection Monotonic start-up into pre-biased load Fixed frequency operation nd UL 60950-1 2 edition recognized Options Negative / Positive enable logic Output over-voltage protection Output voltage tracking/ sequence Part Numbering System Series Input Output ON/OFF Output Pin Electrical Option Other Option Name Voltage Voltage Logic Current NAT 1: 8.5-18V 000: variable* P: positive Unit: A Regular 0: None 5: Open frame N: negative 20:20A R: 0.180 1:Voltage Tracking 6: Baseplate 2:OVP 3:Both VT&OVP 4:Synchronization 5:Both Sync & OVP * Consult the factory for semi-custom codes with the output voltage set to a specific value without using an external programing resistor. Absolute Maximum Ratings Excessive stresses over these absolute maximum ratings can cause permanent damage to the converter. Operation should be limited to the conditions outlined under the Electrical Specification Section. Parameter Symbol Min Max Unit Input Voltage (continuous) Vi -0.5 22 Vdc Operating Ambient Temperature To -40 85* C (See Thermal Consideration section) Storage Temperature Tstg -55 125 C * Derating curves provided in this datasheet end at 85C ambient temperature. Operation above 85C ambient temperature is allowed provided the temperatures of the key components or the baseplate do not exceed the limit stated in the Thermal Considerations section. UL is a registered trademark of Underwriters Laboratory Inc. www.netpowercorp.com Datasheet NAT1000x20Rxx 04-02-2014 1 36 NAT1000x20Rxx 8.5-18V Input, 0.75-5.5V,20A Output Leading the Advancement of Power Conversion Electrical Specifications These specifications are valid over the converters full range of input voltage, resistive load, and operating temperature unless noted otherwise. Input Specifications Parameter Symbol Min Typ Max Unit Input Voltage Vi 8.5 12 18 Vdc Input Current Iin Max - - 10 A Quiescent Input Current (Typical Vin) Iin Qsnt - 120 200 mA Standby Input Current Iin Stdby - 2 mA Input Reflected-ripple Current, Peak-to-peak - - 20 - mAp-p (5 Hz to 20 MHz, 12 H source impedance) Input Ripple Rejection (120 Hz) - 30 - dB Input Turn-on Voltage Threshold - 8.3 V Output Specifications Parameter Symbol Min Typ Max Unit Output Voltage Set Point Accuracy - -2.0 +2.0 % (Vi = Typical Vin Io = Io,max Ta = 25C) Output Voltage Set Point Accuracy (over all conditions) - -2.5 +3.5 % Output Regulation: Line Regulation ( full range input voltage, 1/2 full load) - - 0.2 %Vo Load Regulation (full range load, Typical Vin) - - 0.3 %Vo Temperature (Ta = -40C to 85 C) - - 0.2 %Vo Output Ripple and Noise Voltage RMS - - - 1 %Vo Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin) 1.5 %Vo External Load Capacitance - - - 5,000 F Output Current Io 0 - 20 A Output Current-limit Trip Point Io,cli - 200 - %Io (Vo = 90% of Vo,nom) Vo=0.75V 73 Vo=1V 78 Vo=1.2V 81 Efficiency Vo=1.5V 84 (Typical Vin Io,max, TA = % Vo=1.8V 85.5 25C) Vo=2.5V 88.5 Vo=3.3V 91 Vo=5V 93 Output Over Voltage trip point 115 125 135 %Vo Output Ripple Frequency - 270 300 330 kHz Dynamic Response (Vi = Typical Vin Ta = 25C Load transient 0.1A/s) Load steps from 50% to 75% of full load: Peak deviation 200 mV Settling time (within 10% band of Vo deviation) 70 s Load step from 50% to 25% of full load Peak deviation 200 mV Settling time (within10% band of Vo deviation) 70 s www.netpowercorp.com Datasheet NAT1000x20Rxx 04-02-2014 2