Bel Power Solutions point-of-load converters are recommended for use with regulated bus converters in an Intermediate Bus Architecture (IBA). The YM12S05 non- isolated DC-DC converters deliver up to 5A of output current in an industry-standard surface-mount package. Operating from a 9.6-14 VDC input, the YM12S05 converters are ideal choices for Intermediate Bus Architectures where Point-of-Load power (POL) delivery is generally a requirement. They provide an extremely tight regulated programmable output voltage of 0.7525 V to 5.5 V. The Y-Series converters provide exceptional thermal performance, even in high temperature environments with minimal airflow. No derating is required up to 85 C (up to 70C for 5 V and 3.3 V outputs), even without airflow at natural convection. This is accomplished through the use RoHS lead free and lead-solder-exempted products are of advanced circuitry, packaging and processing available techniques to achieve a design possessing ultra-high Delivers up to 5 A (28 W) efficiency, excellent thermal management and a very low Extended input range 9.6 V 14 V body profile. No derating up to 85 C (70 C for 5V and 3.3V) The low body profile and the preclusion of heat sinks Surface-mount package minimize impedance to system airflow, thus enhancing Industry-standard footprint and pinout cooling for both upstream and downstream devices. The Small size and low profile: 0.80 x 0.45 x 0.247 use of 100% automation for assembly, coupled with (20.32 x 11.43 x 6.27mm) advanced power electronics and thermal design, results Weight: 0.079 oz 2.26 g in a product with extremely high reliability. Co-planarity < 0.003 Synchronous Buck Converter topology Start-up into pre-biased output Intermediate Bus Architectures Distributed Power Architectures No minimum load required Data communications Programmable output voltage via external resistor Telecommunications Operating ambient temperature: -40 C to 85 C Servers, workstations Remote ON/OFF Fixed frequency operation High efficiency no heat sink required Auto-reset output overcurrent protection Reduces total solution board area Auto-reset overtemperature protection Tape and reel packing High reliability, MTBF approx. 71.8 Million Hours Compatible with pick & place equipment Minimizes part numbers in inventory calculated per Telcordia TR-332, Method I Case 1 Low cost All materials meet UL94, V-0 flammability rating Safety approved to UL/CSA 62368-1 and EN/IEC 62368-1 Conditions: T = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 12 VDC, Vout = 0.7525 5.5 V, unless otherwise specified. A PARAMETER NOTES MIN TYP MAX UNITS Absolute Maximum Ratings Input Voltage Continuous -0.3 15 VDC Operating Ambient Temperature -40 85 C Storage Temperature -55 125 C Feature Characteristics Switching Frequency 310 kHz 1 Output Voltage Trim Range By external resistor, See Trim Table 1 0.7525 5.5 VDC Turn-On Delay Time Full resistive load With Vin = (Converter Enabled, then Vin applied) From Vin = Vin(min) to Vo=0.1* Vo(nom) 7.5 ms With Enable (Vin = Vin(nom) applied, then enabled) From enable to Vo= 0.1*Vo(nom) 7.5 ms Rise time (Full resistive load) From 0.1*Vo(nom) to 0.9*Vo(nom) 7 ms Converter Off 2.4 Vin VDC 2 ON/OFF Control Converter On -5 0.8 VDC Input Characteristics Operating Input Voltage Range 9.6 12 14 VDC Turn-on Threshold 9.0 VDC Input Under Voltage Lockout Turn-off Threshold 8.8 VDC Maximum Input Current 5 ADC Out 9.6 VDC In VOUT = 5.0 VDC 2.9 ADC VOUT = 3.3 VDC 2.0 ADC VOUT = 2.5 VDC 1.6 ADC VOUT = 2.0 VDC 1.4 ADC VOUT = 1.8 VDC 1.25 ADC VOUT = 1.5 VDC 1.0 ADC VOUT = 1.2 VDC 0.8 ADC VOUT = 1.0 VDC 0.7 ADC Input Stand-by Current (Converter disabled) 1 mA Input No Load Current (Converter enabled) VOUT = 5.0 VDC 65 mA VOUT = 3.3 VDC 47 mA VOUT = 2.5 VDC 35 mA VOUT = 2.0 VDC 28 mA VOUT = 1.8 VDC 25 mA VOUT = 1.5 VDC 20 mA VOUT = 1.2 VDC 17 mA VOUT = 1.0 VDC 15 mA Input Reflected-Ripple Current - is See Fig. D for setup. (BW=20MHz) VOUT = 5.0 VDC 55 mA P-P VOUT = 3.3 VDC 48 mA P-P VOUT = 2.5 VDC 43 mA P-P VOUT = 2.0 VDC 38 mA P-P VOUT = 1.8 VDC 35 mAP-P VOUT = 1.5 VDC 32 mAP-P VOUT = 1.2 VDC 28 mAP-P VOUT = 1.0 VDC 25 mAP-P Input Voltage Ripple Rejection 120Hz 72 dB Notes: 1 The output voltage should not exceed 5.5V. 2 The converter is on if the ON/OFF pin is left open. +1 866.513.2839 tech.support psbel.com 2015 Bel Power Solutions, Inc. BCD.00636 AA1