YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A The Products: Y-Series Features Applications • • • • • Intermediate Bus Architectures Telecommunications Data communications Distributed Power Architectures Servers, workstations Benefits • High efficiency – no heat sink required • Reduces total solution board area • Tape and reel packing • Compatible with pick & place equipment • Minimizes part numbers in inventory • RoHS lead-free solder and lead-solder-exempted products are available • Delivers up to 20 A (100 W) • Extended input range 9.6 V – 14 V • High efficiency (0.94 at 5 V output) • Surface-mount package • Industry-standard footprint and pinout • Small size and low profile: 1.30” x 0.53” x 0.314” (33.02 x 13.46 x 7.98 mm) • Weight: 0.22 oz [6.12 g] • Coplanarity less than 0.003”, maximum • Synchronous Buck Converter topology • Source and sink capable • Start-up into pre-biased output • No minimum load required • Programmable output voltage via external resistor • Operating ambient temperature: -40 °C to 85 °C • Remote output sense • Remote ON/OFF (Positive or Negative) • Fixed-frequency operation • Auto-reset output overcurrent protection • Auto-reset overtemperature protection • High reliability, MTBF = TBD Million Hours • All materials meet UL94, V-0 flammability rating • UL 60950 recognition in U.S. & Canada, and DEMKO certification per IEC/EN 60950 Description The YNC12S20 non-isolated DC-DC converter delivers up to 20 A of output current in an industry-standard surface-mount package. Operating from a 9.6 to 14 VDC input, the YNC12S20 converter is an ideal choice for Intermediate Bus Architectures where point-of-load power delivery is generally a requirement. It provides a resistor-programmable regulated output voltage of 0.7525V to 5.5V. The Y-Series converters provide exceptional thermal performance, even in high temperature environments with minimal airflow. This is accomplished through the use of circuit, packaging and processing techniques to achieve ultra-high efficiency, excellent thermal management and a very low body profile. The low body profile and the preclusion of heat sinks minimize impedance to system airflow, thus enhancing cooling for both upstream and downstream devices. The use of 100% automation for assembly, coupled with advanced power electronics and thermal design, results in a product with extremely high reliability. OCT 12, 2006 revised to APR 23, 2007 Page 1 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Electrical Specifications Conditions: TA=25ºC, Airflow=200 LFM (1 m/s), Vin=12 VDC, Vout = 0.7525 - 5.5V, unless otherwise specified. PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage NOTES MIN Continuous TYP MAX UNITS -0.3 15 VDC Operating Ambient Temperature -40 85 °C Storage Temperature -55 125 °C 5.5 0.5 VDC VDC FEATURE CHARACTERISTICS Switching Frequency 300 Output Voltage Programming Range 1 Remote Sense Compensation 1 Turn-On Delay Time By external resistor, See Trim Table 1 0.7525 kHz Full resistive load With Vin = (Module Enabled, then Vin applied) From Vin = Vin(min) to Vo=0.1* Vo(nom) 3 With Enable (Vin = Vin(nom) applied, then enabled) From enable to Vo= 0.1*Vo(nom) 3 ms From 10% to 90%, full resistive load 4 ms Rise time ON/OFF Control (Positive Logic) ms 2 Module Off -5 0.8 VDC Module On 2.4 VIN VDC Module Off 2.4 VIN VDC Module On -5 0.8 VDC ON/OFF Control (Negative Logic) 2 Note: 1. The output voltage should not exceed 5.5V (taking into account both the programming and remote sense compensation). 2. Converter is on if ON/OFF pin is left open. 3. Note that start-up time is the sum of turn-on delay time and rise time. OCT 12, 2006 revised to APR 23, 2007 Page 2 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Electrical Specifications (continued) Conditions: TA=25ºC, Airflow=200 LFM (1 m/s), Vin=12 VDC, Vout = 0.7525 - 5.5V, unless otherwise specified. PARAMETER INPUT CHARACTERISTICS NOTES Operating Input Voltage Range MIN TYP 9.6 12 MAX UNITS 14 VDC Input Under Voltage Lockout Turn-on Threshold 9 VDC Turn-off Threshold 8.5 VDC Maximum Input Current Input Stand-by Current (Module disabled) Input No Load Current (Module enabled) Input Reflected-Ripple Current - is Input Voltage Ripple Rejection OCT 12, 2006 revised to APR 23, 2007 20 ADC Out @ 9.6 VDC In VOUT = 5.0 VDC 11.1 ADC VOUT = 3.3 VDC 7.6 ADC VOUT = 2.5 VDC 5.9 ADC VOUT = 2.0 VDC 4.8 ADC VOUT = 1.8 VDC 4.4 ADC VOUT = 1.5 VDC 3.8 ADC VOUT = 1.2 VDC 3.1 ADC VOUT = 1.0 VDC 2.7 ADC VOUT = 0.7525 VDC 2.2 ADC 5 VOUT = 5.0 VDC 80 mA mA VOUT = 3.3 VDC 62 mA VOUT = 2.5 VDC 52 mA VOUT = 2.0 VDC 47 mA VOUT = 1.8 VDC 45 mA VOUT = 1.5 VDC 43 mA VOUT = 1.2 VDC 41 mA VOUT = 1.0 VDC 39 mA VOUT = 0.7525 VDC 35 mA TBD mAP-P 72 dB See Fig. F for setup. (BW=20 MHz) 120 Hz Page 3 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Electrical Specifications (continued) Conditions: TA=25 ºC, Airflow=200 LFM (1 m/s), Vin=12 VDC, Vout = 0.7525 – 5.5 V, unless otherwise specified. PARAMETER OUTPUT CHARACTERISTICS NOTES Output Voltage Set Point (no load) MIN TYP -1.5 Vout MAX UNITS +1.5 %Vout Output Regulation Over Line Full resistive load 2 mV Over Load Output Voltage Range (Over all operating input voltage, resistive load and temperature conditions until end of life ) From no load to full load 10 mV Output Ripple and Noise - 20MHz bandwidth (Fig. F) Over line, load and temperature -2.5 +2.5 %Vout Peak-to-Peak VOUT = 0.7525 VDC 10 15 mVP-P Peak-to-Peak VOUT = 5.0 VDC 35 50 mVP-P External Load Capacitance Plus full load (resistive) Min ESR > 1mΩ Min ESR > 10 mΩ Output Current Range 0 Output Current Limit Inception (IOUT) Output Short-Circuit Current , RMS Value Short=10 mΩ, continuous 1,000 μF 5,000 μF 20 A 26 A 6 A 140 mV DYNAMIC RESPONSE Load current change from 10A – 20A, di/dt = 5 A/μS Co = 100μF ceramic + 470 μF POS Settling Time (VOUT < 10% peak deviation) Unloading current change 20A – 10A, di/dt = -5 A/μS Co = 100 μF ceramic + 470 μF POS Settling Time (VOUT < 10% peak deviation) EFFICIENCY µs 140 mV 45 µs Full load (20A) VOUT = 5.0 VDC 94 % VOUT = 3.3 VDC 91 % VOUT = 2.5 VDC 89 % VOUT = 2.0 VDC 87 % VOUT = 1.8 VDC 86 % VOUT = 1.5 VDC 84 % VOUT = 1.2 VDC 81.5 % VOUT = 1.0 VDC VOUT = 0.7525 VDC OCT 12, 2006 revised to APR 23, 2007 45 Page 4 of 28 78 % 73.5 % www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Operation TM Vin Input and Output Impedance The Y-Series converter should be connected via a low impedance to the DC power source. In many applications, the inductance associated with the distribution from the power source to the input of the converter can affect the stability of the converter. It is recommended to use decoupling capacitors in order to ensure stability of the converter and reduce input ripple voltage. The converter has an internal input capacitance of 40 μF with very low ESR (ceramic capacitors). In a typical application, low - ESR tantalum or POS capacitors will be sufficient to provide adequate ripple voltage filtering at the input of the converter. However, very low ESR ceramic capacitors 47μF-100 μF are recommended at the input of the converter in order to minimize the input ripple voltage. They should be placed as close as possible to the input pins of the converter. YNC12S20 has been designed for stable operation with or without external capacitance. Low ESR ceramic capacitors placed as close as possible to the load (Min 47 μF) are recommended for improved transient performance and lower output voltage ripple. It is important to keep low resistance and low inductance PCB traces for connecting load to the output pins of the converter in order to maintain good load regulation. ON/OFF (Pin 1) The ON/OFF pin is used to turn the power converter on or off remotely via a system signal. There are two remote control options available, positive logic (standard option) and negative logic, and both are referenced to GND. Typical connections are shown in Fig. A. The positive logic version turns the converter on when the ON/OFF pin is at a logic high or left open, and turns the converter off when at a logic low or shorted to GND. OCT 12, 2006 revised to APR 23, 2007 R* Nex -c Series Converter SENSE (Top View) ON/OFF Vout Vin Rload GND TRIM CONTROL INPUT R* is for negative logic option only Fig. A: Circuit configuration for ON/OFF function. The negative logic version turns the converter on when the ON/OFF pin is at logic low or left open, and turns the converter off when the ON/OFF pin is at a logic high or connected to Vin. ON/OFF pin is internally pulled-up to Vin for a positive logic version, and pulled-down for a negative logic version. A TTL or CMOS logic gate, open collector (open drain) transistor can be used to drive ON/OFF pin. When using open collector (open drain) transistor with a negative logic option, add a pull-up resistor (R*) of 75 kΩ to Vin as shown in Fig. A; This device must be capable of: - sinking up to 0.2 mA at a low level voltage of ≤ 0.8 V - sourcing up to 0.25 mA at a high logic level of 2.3V – 5V - sourcing up to 0.75 mA when connected to Vin. Remote Sense (Pin 2) The remote sense feature of the converter compensates for voltage drops occurring only between Vout pin (Pin 4) of the converter and the load. The SENSE (Pin 2) pin should be connected at the load or at the point where regulation is required (see Fig. B). There is no sense feature on the output GND return pin, where a solid ground plane is recommended to provide low voltage drop. If remote sensing is not required, the SENSE pin must be connected to the Vout pin (Pin 4) to ensure the converter will regulate at the specified output voltage. If these connections are not made, the converter will deliver an output voltage that is slightly higher than the specified value. Page 5 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Vin TM Nex -c Series Converter SENSE (Top View) ON/OFF TM Nex -c Series Converter Vin SENSE (Top View) Rw ON/OFF Vout Vout Vin Vin Rload Rload GND GND TRIM TRIM RTRIM Rw Fig. B: Remote sense circuit configuration. Because the sense lead carries minimal current, large traces on the end-user board are not required. However, sense traces should be located close to a ground plane to minimize system noise and ensure optimum performance. When utilizing the remote sense feature, care must be taken not to exceed the maximum allowable output power capability of the converter, equal to the product of the nominal output voltage and the allowable output current for the given conditions. When using remote sense, the output voltage at the converter can be increased up to 0.5V above the nominal rating in order to maintain the required voltage across the load. Therefore, the designer must, if necessary, decrease the maximum current (originally obtained from the derating curves) by the same percentage to ensure the converter’s actual output power remains at or below the maximum allowable output power. Output Voltage Programming (Pin 3) The output voltage can be programmed from 0.7525V to 5.5V by connecting an external resistor between TRIM pin (Pin 3) and GND pin (Pin 5); see Fig. C. A trim resistor, RTRIM, for a desired output voltage can be calculated using the following equation: RTRIM = 10.5 −1 (VO -REQ - 0.7525) [kΩ] where, RTRIM = Required value of trim resistor [kΩ] VO−REQ = Desired (trimmed) output voltage [V] OCT 12, 2006 revised to APR 23, 2007 Fig. C: Configuration for programming output voltage. Note that the tolerance of a trim resistor directly affects the output voltage tolerance. It is recommended to use standard 1% or 0.5% resistors; for tighter tolerance, two resistors in parallel are recommended rather than one standard value from Table 1. The ground pin of the trim resistor should be connected directly to the converter GND pin (Pin 5) with no voltage drop in between. Table 1 provides the trim resistor values for popular output voltages. Table 1: Trim Resistor Value The Closest V0-REG [V] RTRIM [kΩ] Standard Value [kΩ] 0.7525 1.0 1.2 1.5 1.8 2.0 2.5 3.3 5.0 5.5 open 41.2 22.46 13.0 9.0 7.4 5.0 3.12 1.47 1.21 41.2 22.6 13.0 9.09 7.32 4.99 3.09 1.47 1.21 The output voltage can be also programmed by external voltage source. To make trimming less sensitive, a series external resistor Rext is recommended between the TRIM pin and the programming voltage source. Control Voltage can be calculated by the formula: VCTRL = 0.7 − (1 + REXT)(VO -REQ - 0.7525) 15 where, Page 6 of 28 www.power-one.com [V] YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A VCTRL = Control voltage [V] REXT = External resistor between TRIM pin and voltage source; the value can be chosen depending on the required output voltage range [kΩ]. Control voltages with REXT = 0 and REXT = 15k are shown in Table 2. Table 2: Control Voltage [VDC] V0-REG [V] VCTRL (REXT = 0) VCTRL(REXT = 15k) 0.7525 1.0 1.2 1.5 1.8 2.0 2.5 3.3 5.0 5.5 0.700 0.684 0.670 0.650 0.630 0.617 0.584 0.530 0.417 0.384 0.700 0.436 0.223 -0.097 -0.417 -0.631 -1.164 -2.017 -3.831 -4.364 Protection Features Input Undervoltage Lockout Input undervoltage lockout is standard with this converter. The converter will shut down when the input voltage drops below a pre-determined voltage; it will start automatically when Vin returns to a specified range. The input voltage must be at least 9.6V (typically 9V) for the converter to turn on. Once the converter has been turned on, it will shut off when the input voltage drops below typically 8.5V. Output Overcurrent Protection (OCP) The converter is protected against overcurrent and short-circuit conditions. Upon sensing an overcurrent condition (see Fig. D), the converter will enter hiccup mode. Once the overload or short circuit condition is removed, Vout will return to nominal value. OCT 12, 2006 revised to APR 23, 2007 Fig. D: Output short circuit current (10 A/div) (RLOAD= 10 mOhm) for Vout = 5.0 V Time scale: 1 ms/div.; Bottom trace: Zoomed current with time scale 0.1 ms/div. Overtemperature Protection (OTP) The converter will shut down under an overtemperature condition to protect itself from overheating caused by operation outside the thermal derating curves, or operation in abnormal conditions such as system fan failure. After the converter has cooled to a safe operating temperature, it will automatically restart. Safety Requirements The converter meets North American and International safety regulatory requirements per UL60950 and EN60950. The maximum DC voltage between any two pins is Vin under all operating conditions. Therefore, the unit has ELV (extra low voltage) output; it meets SELV requirements under the condition that all input voltages are ELV. The converter is not internally fused. To comply with safety agencies requirements, a recognized fuse with a maximum rating of 20 Amps must be used in series with the input line. Page 7 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Characterization General Information The converter has been characterized for many operational aspects, to include thermal derating (maximum load current as a function of ambient temperature and airflow) for vertical and horizontal mounting, efficiency, start-up and shutdown parameters, output ripple and noise, transient response to load step-change, overload, and short circuit. The figures are numbered as Fig. x.y, where x indicates the different output voltages, and y associates with specific plots (y = 1 for the vertical thermal derating, …). For example, Fig. x.1 will refer to the vertical thermal derating for all the output voltages in general. The following pages contain specific plots or waveforms associated with the converter. Additional comments for specific data are provided below. Test Conditions All thermal and efficiency data presented were taken with the converter soldered to a test board, specifically a 0.060” thick printed wiring board (PWB) with four layers. The top and bottom layers were not metalized. The two inner layers, comprising two-ounce copper, were used to provide traces for connectivity to the converter. recommends the use of AWG #40 gauge thermocouples to ensure measurement accuracy. Careful routing of the thermocouple leads will further minimize measurement error. Refer to Fig. E for optimum measuring thermocouple location. Thermal Derating Load current vs. ambient temperature and airflow rates are given in Figs. x.1 for maximum temperature of 120 °C. Ambient temperature was varied between 25 °C and 85 °C, with airflow rates from 30 to 500 LFM (0.15m/s to 2.5 m/s), and vertical converter mounting. The airflow during the testing is parallel to the short axis of the converter, going from pin 1 and pin 6 to pins 2 – 5. For each set of conditions, the maximum load current was defined as the lowest of: (i) The output current at which either any MOSFET temperature did not exceed a maximum specified temperature (120°C) as indicated by the thermographic image, or (ii) The maximum current rating of the converter (20 A) During normal operation, derating curves with maximum FET temperature less than or equal to 120 °C should not be exceeded. Temperature on the PCB at the thermocouple location shown in Fig. E should not exceed 120 °C in order to operate inside the derating curves. The lack of metalization on the outer layers as well as the limited thermal connection ensured that heat transfer from the converter to the PWB was minimized. This provides a worst-case but consistent scenario for thermal derating purposes. All measurements requiring airflow were made in vertical and horizontal wind tunnel facilities using Infrared (IR) thermography and thermocouples for thermometry. Ensuring components on the converter do not exceed their ratings is important to maintaining high reliability. If one anticipates operating the converter at or close to the maximum loads specified in the derating curves, it is prudent to check actual operating temperatures in the application. Thermographic imaging is preferable; if this capability is not available, then thermocouples may be used. Power-One OCT 12, 2006 revised to APR 23, 2007 Fig. E: Location of the thermocouple for thermal testing. Efficiency Figure x.2 shows the efficiency vs. load current plot for ambient temperature of 25 ºC, airflow rate of 200 LFM (1 m/s) and input voltages of 9.6 V, 12 V, and 14 V. Page 8 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Power Dissipation Fig. x.3 shows the power dissipation vs. load current plot for Ta = 25 ºC, airflow rate of 200 LFM (1 m/s) with vertical mounting and input voltages of 9.6 V, 12 V, and 14 V. Ripple and Noise The output voltage ripple waveform is measured at full rated load current. Note that all output voltage waveforms are measured across a 1 μF ceramic capacitor. The output voltage ripple and input reflected ripple current waveforms are obtained using the test setup shown in Fig. F. iS 1 μH source inductance Vsource TM Nex -c Series CIN 4x47μF ceramic capacitor DC/DC Converter 1μF ceramic capacitor CO 100μF ceramic capacitor Vout Fig. F: Test setup for measuring input reflected ripple currents, is and output voltage ripple. OCT 12, 2006 revised to APR 23, 2007 Page 9 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A 25 Load Current [Adc] 20 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 20 30 40 50 60 70 80 90 Ambient Temperature [°C] 1.00 10 0.95 8 Power Dissipation [W] Efficiency Fig. 5.0V.1: Available load current vs. ambient temperature and airflow rates for Vout = 5.0 V converter mounted vertically with Vin = 12 V, and maximum MOSFET temperature ≤ 120 °C. 0.90 0.85 14 V 12 V 9.6 V 0.80 6 4 14 V 12 V 9.6 V 2 0 0.75 0 4 8 12 16 20 0 24 OCT 12, 2006 revised to APR 23, 2007 8 12 16 20 24 Load Current [Adc] Load Current [Adc] Fig. 5.0V.2: Efficiency vs. load current and input voltage for Vout = 5.0 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. 4 Fig. 5.0V.3: Power loss vs. load current and input voltage for Vout = 5.0 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. Page 10 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Fig. 5.0V.4: Turn-on transient for Vout = 5.0 V with application of Vin at full rated load current (resistive) and 100 μF external capacitance at Vin = 12 V. Top trace: Vin (10 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 5.0V.5: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 μF ceramic + 1 μF ceramic and Vin = 12 V for Vout = 5.0 V. Time scale: 2 μs/div. Fig. 5.0V.6: Output voltage response for Vout = 5.0 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. Fig. 5.0V.7: Output voltage response for Vout = 5.0 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. OCT 12, 2006 revised to APR 23, 2007 Page 11 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A 25 Load Current [Adc] 20 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 20 30 40 50 60 70 80 90 Ambient Temperature [°C] 1.00 10 0.95 8 Power Dissipation [W] Efficiency Fig. 3.3V.1: Available load current vs. ambient temperature and airflow rates for Vout = 3.3 V converter mounted vertically with Vin = 12 V, and maximum MOSFET temperature ≤ 120 °C. 0.90 0.85 14 V 12 V 9.6 V 0.80 6 4 14 V 12 V 9.6 V 2 0.75 0 0 4 8 12 16 20 24 0 Load Current [Adc] Fig. 3.3V.2: Efficiency vs. load current and input voltage for Vout = 3.3 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. OCT 12, 2006 revised to APR 23, 2007 4 8 12 16 20 24 Load Current [Adc] Fig. 3.3V.3: Power loss vs. load current and input voltage for Vout = 3.3 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. Page 12 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Fig. 3.3V.4: Turn-on transient for Vout = 3.3 V with application of Vin at full rated load current (resistive) and 100 μF external capacitance at Vin = 12 V. Top trace: Vin (10 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 3.3V.5: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 μF ceramic + 1 μF ceramic and Vin = 12 V for Vout = 3.3 V. Time scale: 2 μs/div. Fig. 3.3V.6: Output voltage response for Vout = 3.3 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. Fig. 3.3V.7: Output voltage response for Vout = 3.3 V to negative load current step change from 20 A to 10 A with slew rate of -5A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. OCT 12, 2006 revised to APR 23, 2007 Page 13 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A 25 Load Current [Adc] 20 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 20 30 40 50 60 70 80 90 Ambient Temperature [°C] 1.00 10 0.95 8 Power Dissipation [W] Efficiency Fig. 2.5V.1: Available load current vs. ambient temperature and airflow rates for Vout = 2.5 V converter mounted vertically with Vin = 12 V, and maximum MOSFET temperature ≤ 120 °C. 0.90 0.85 14 V 12 V 9.6 V 0.80 6 4 14 V 12 V 9.6 V 2 0.75 0 0 5 10 15 20 25 0 Load Current [Adc] Fig. 2.5V.2: Efficiency vs. load current and input voltage for Vout = 2.5 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. OCT 12, 2006 revised to APR 23, 2007 4 8 12 16 20 24 Load Current [Adc] Fig. 2.5V.3: Power loss vs. load current and input voltage for Vout = 2.5 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. Page 14 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Fig. 2.5V.4: Turn-on transient for Vout = 2.5 V with application of Vin at full rated load current (resistive) and 100 μF external capacitance at Vin = 12V. Top trace: Vin (10 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 2.5V.5: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 μF ceramic + 1 μF ceramic and Vin = 12 V for Vout = 2.5 V. Time scale: 2 μs/div. Fig. 2.5V.6: Output voltage response for Vout = 2.5 V to positive load current step change from 10 A to 20 A with slew rate of 5A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. Fig. 2.5V.7: Output voltage response for Vout = 2.5 V to negative load current step change from 20 A to 10 A with slew rate of -5A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. OCT 12, 2006 revised to APR 23, 2007 Page 15 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A 25 Load Current [Adc] 20 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 20 30 40 50 60 70 80 90 Ambient Temperature [°C] Fig. 2.0V.1: Available load current vs. ambient temperature and airflow rates for Vout = 2.0 V converter mounted vertically with Vin = 12 V, and maximum MOSFET temperature ≤ 120 °C. 1.00 8 Power Dissipation [W] Efficiency 0.95 0.90 0.85 14 V 12 V 9.6 V 0.80 0.75 6 4 14 V 12 V 9.6 V 2 0 0 4 8 12 16 20 24 0 Load Current [Adc] Fig. 2.0V.2: Efficiency vs. load current and input voltage for Vout = 2.0 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. OCT 12, 2006 revised to APR 23, 2007 4 8 12 16 20 24 Load Current [Adc] Fig. 2.0V.3: Power loss vs. load current and input voltage for Vout = 2.0 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. Page 16 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Fig. 2.0V.4: Turn-on transient for Vout = 2.0 V with application of Vin at full rated load current (resistive) and 100 μF external capacitance at Vin = 12 V. Top trace: Vin (10 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 2.0V.5: Output voltage ripple (20mV/div.) at full rated load current into a resistive load with external capacitance 100 μF ceramic + 1 μF ceramic and Vin = 12 V for Vout = 2.0 V. Time scale: 2 μs/div. Fig. 2.0V.6: Output voltage response for Vout = 2.0 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. Fig. 2.0V.7: Output voltage response for Vout = 2.0 V to negative load current step change from 20 A to 10 A with slew rate of -5A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. OCT 12, 2006 revised to APR 23, 2007 Page 17 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A 25 Load Current [Adc] 20 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 20 30 40 50 60 70 80 90 Ambient Temperature [°C] Fig. 1.8V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.8 V converter mounted vertically with Vin = 12 V, and maximum MOSFET temperature ≤ 120 °C. 8 0.95 Power Dissipation [W] Efficiency 0.90 0.85 0.80 14 V 12 V 9.6 V 0.75 6 4 14 V 12 V 9.6 V 2 0 0.70 0 4 8 12 16 20 0 24 OCT 12, 2006 revised to APR 23, 2007 8 12 16 20 24 Load Current [Adc] Load Current [Adc] Fig. 1.8V.2: Efficiency vs. load current and input voltage for Vout = 1.8 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. 4 Fig. 1.8V.3: Power loss vs. load current and input voltage for Vout = 1.8 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. Page 18 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Fig. 1.8V.4: Turn-on transient for Vout = 1.8 V with application of Vin at full rated load current (resistive) and 100 μF external capacitance at Vin = 12 V. Top trace: Vin (10 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 1.8V.5: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 μF ceramic + 1 μF ceramic and Vin = 12 V for Vout = 1.8 V. Time scale: 2 μs/div. Fig. 1.8V.6: Output voltage response for Vout = 1.8 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. Fig. 1.8V.7: Output voltage response for Vout = 1.8 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. OCT 12, 2006 revised to APR 23, 2007 Page 19 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A 25 Load Current [Adc] 20 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 20 30 40 50 60 70 80 90 Ambient Temperature [°C] Fig. 1.5V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.5 V converter mounted vertically with Vin = 12 V, air flowing and maximum MOSFET temperature ≤ 120 °C. 8 0.95 Power Dissipation [W] Efficiency 0.90 0.85 0.80 14 V 12 V 9.6 V 0.75 6 4 14 V 12 V 9.6 V 2 0 0.70 0 4 8 12 16 20 0 24 OCT 12, 2006 revised to APR 23, 2007 8 12 16 20 24 Load Current [Adc] Load Current [Adc] Fig. 1.5V.2: Efficiency vs. load current and input voltage for Vout = 1.5 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. 4 Fig. 1.5V.3: Power loss vs. load current and input voltage for Vout = 1.5V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. Page 20 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Fig. 1.5V.4: Turn-on transient for Vout = 1.5 V with application of Vin at full rated load current (resistive) and 100 μF external capacitance at Vin = 12 V. Top trace: Vin (10 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 1.5V.5: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 μF ceramic + 1 μF ceramic and Vin = 12 V for Vout = 1.5 V. Time scale: 2 μs/div. Fig. 1.5V.6: Output voltage response for Vout = 1.5 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. Fig. 1.5V.7: Output voltage response for Vout = 1.5 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. OCT 12, 2006 revised to APR 23, 2007 Page 21 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A 25 Load Current [Adc] 20 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 20 30 40 50 60 70 80 90 Ambient Temperature [°C] Fig. 1.2V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.2 V converter mounted vertically with Vin = 12 V, and maximum MOSFET temperature ≤ 120 °C. 0.95 8 Power Dissipation [W] Efficiency 0.90 0.85 0.80 14 V 12 V 9.6 V 0.75 0.70 6 4 14 V 12 V 9.6 V 2 0 0 4 8 12 16 20 24 0 Load Current [Adc] Fig. 1.2V.2: Efficiency vs. load current and input voltage for Vout = 1.2 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. OCT 12, 2006 revised to APR 23, 2007 4 8 12 16 20 24 Load Current [Adc] Fig. 1.2V.3: Power loss vs. load current and input voltage for Vout = 1.2 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. Page 22 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Fig. 1.2V.4: Turn-on transient for Vout = 1.2 V with application of Vin at full rated load current (resistive) and 100 μF external capacitance at Vin = 12 V. Top trace: Vin (10 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 1.2V.5: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 μF ceramic + 1 μF ceramic and Vin = 12 V for Vout = 1.2 V. Time scale: 2 μs/div. Fig. 1.2V.6: Output voltage response for Vout = 1.2 V to positive load current step change from 10 A to 20 A with slew rate of 5 A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. Fig. 1.2V.7: Output voltage response for Vout = 1.2 V to negative load current step change from 20 A to 108 A with slew rate of -5 A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. OCT 12, 2006 revised to APR 23, 2007 Page 23 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A 25 Load Current [Adc] 20 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 20 30 40 50 60 70 80 90 Ambient Temperature [°C] Fig. 1.0V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.0 V converter mounted vertically with Vin = 12 V, and maximum MOSFET temperature ≤ 120 °C. 8 0.90 Power Dissipation [W] 0.85 Efficiency 0.80 0.75 0.70 14 V 12 V 9.6 V 6 4 14 V 12 V 9.6 V 2 0.65 0 0.60 0 4 8 12 16 20 0 24 OCT 12, 2006 revised to APR 23, 2007 8 12 16 20 24 Load Current [Adc] Load Current [Adc] Fig. 1.0V.2: Efficiency vs. load current and input voltage for Vout = 1.0 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. 4 Fig. 1.0V.3: Power loss vs. load current and input voltage for Vout = 1.0 V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. Page 24 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Fig. 1.0V.4: Turn-on transient for Vout = 1.0 V with application of Vin at full rated load current (resistive) and 100 μF external capacitance at Vin = 12 V. Top trace: Vin (10 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 1.0V.5: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 μF ceramic + 1 μF ceramic and Vin = 12 V for Vout = 1.0 V. Time scale: 2 μs/div. Fig. 1.0V.6: Output voltage response for Vout = 1.0 V to positive load current step change from 10 A to 20 A with slew rate of 5A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. Fig. 1.0V.7: Output voltage response for Vout = 1.0 V to negative load current step change from 20 A to 10 A with slew rate of -5A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. OCT 12, 2006 revised to APR 23, 2007 Page 25 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A 25 Load Current [Adc] 20 15 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 10 5 0 20 30 40 50 60 70 80 90 Ambient Temperature [°C] Fig. 0.7525V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.0 V converter mounted vertically with Vin = 12 V, and maximum MOSFET temperature ≤ 120 °C. 8 0.85 Power Dissipation [W] Efficiency 0.80 0.75 0.70 14 V 12 V 9.6 V 0.65 6 4 14 V 12 V 9.6 V 2 0 0.60 0 4 8 12 16 20 0 24 Fig. 0.7525V.2: Efficiency vs. load current and input voltage for Vout = 0.7525V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. OCT 12, 2006 revised to APR 23, 2007 4 8 12 16 20 24 Load Current [Adc] Load Current [Adc] Fig. 0.7525V.3: Power loss vs. load current and input voltage for Vout = 0.7525V converter mounted vertically with air flowing at a rate of 200 LFM (1 m/s) and Ta = 25 °C. Page 26 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Fig. 0.7525V.4: Turn-on transient for Vout = 0.7525 V with application of Vin at full rated load current (resistive) and 100 μF external capacitance at Vin = 12 V. Top trace: Vin (10 V/div.); Bottom trace: output voltage (1 V/div.); Time scale: 2 ms/div. Fig. 0.7525V.5: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with external capacitance 100 μF ceramic + 1 μF ceramic and Vin = 12 V for Vout = 0.7525V. Time scale: 2 μs/div. Fig. 0.7525V.6: Output voltage response for Vout = 0.7525 V to positive load current step change from 10 A to 20 A with slew rate of 5A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. Fig. 0.7525V.7: Output voltage response for Vout = 0.7525 V to negative load current step change from 20 A to 10 A with slew rate of -5 A/μs at Vin = 12 V. Top trace: output voltage (200 mV/div.); Bottom trace: load current (5 A/div.). Co = 100 μF ceramic. Time scale: 20 μs/div. OCT 12, 2006 revised to APR 23, 2007 Page 27 of 28 www.power-one.com YNC12S20 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 20 A Physical Information Pad/Pin Connections Pad/Pin # 1 2 3 4 5 6 2 3 4 Function ON/OFF SENSE TRIM Vout GND Vin 5 1(*) TOP VIEW YNC12S Platform Notes 6 • • • • • • (*) PIN # 1 ROTATED 90° SIDE VIEW All dimensions are in inches [mm] Connector Material: Copper Connector Finish: Gold over Nickel Converter Weight: 0.22 oz [6.12 g] Converter Height: 0.327” Max., 0.301” Min. Recommended Surface-Mount Pads: Min. 0.080” X 0.112” [2.03 x 2.84] YNC12S Pinout (Surface Mount) Converter Part Numbering/Ordering Information Product Series Input Voltage Mounting Scheme Rated Load Current YNC 12 S 20 Y-Series 9.6V – 14 VDC S ⇒ Surfacemount 20 A (0.7525V to 5.5V) Enable Logic – Environmental 0 0 ⇒ Standard (Positive Logic) No Suffix ⇒ RoHS lead solder exemption compliant D ⇒ Opposite of Standard (Negative Logic) G ⇒ RoHS compliant for all six substances The example above describes P/N YNC12S20-0: 9.6V – 14V input, surface mount, 20A at 0.7525V to 5.5V output, standard enable logic, and RoHS lead solder exemption compliant. Please consult factory regarding availability of a specific version. NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the respective divisional president of Power-One, Inc. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. OCT 12, 2006 revised to APR 23, 2007 Page 28 of 28 www.power-one.com