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power supplies/medical applications
electronic products and technology • march-april 2011
Ac source delivers built-in power analyzer functions 61500 Series programmable ac power sources provide high performance ac sources with power analyzer functions built-in. Units meet these requirements by providing the ability to simulate various ac line input conditions and measurement of critical characteristic for products under test. Developed using advanced PWM technology, product operates with singlephase & three-phase output. CHROMA SYSTEMS SOLUTIONS
60V synchronous step-down dc-dc controller specified up to 150C LTC3810H-5 high input voltage synchronous step-down dc-dc controller provides guaranteed specifications for junction temperatures as high as 150C. Device employs constant on-time valley current-mode control architecture, delivering very low duty cycles and extremely fast transient response with accurate cycle-by-cycle current limit without requiring a sense resistor. The rugged device can directly step down voltages from 60V to an output voltage ranging from 0.8V to 93% of VIN. The powerful 1 Ohm onboard gate drivers minimize switching losses associated with driving N-channel MOSFETs at high frequency and high voltage for output currents up to 25A. LINEAR TECHNOOGY
http://ept.hotims.com/34481-73
150Watt medical power supply operates in convection-cooled U-frame
http://ept.hotims.com/34481-79
MPM-815H Series of ATX 12V.0 compliant U-frame switchers provides convection cooled operation for medical and patient-care equipment. Product provides universal ac input with active power factor correction; Five ATX output voltages of 3.3 / 5 / 12 / -12 / 5VSB; up to 90 Watts max combined 3.3 and 5V rails. Unit measures 7.79 x 3.82 x 1.59" and are safety approved UL/cUL60601-1 / EN60601-1 / CE Mark (LVD) for use in medical applications with Class B Emissions. ADVANCED POWER SOLUTIONS http://ept.hotims.com/34481-74
LDOs extend battery life 150mA AP7312 and 300mA AP7332 dual fixed output linear regulators LDOs, exhibit respective dropouts of 150mV and 300mV and typical quiescent current ratings of only 60µA. To enable full use of battery capacity down to 2V and to provide additional headroom for 5V sources, device’s input voltage spectrum is wide, at 2V to a maximum of 6V. Dual output devices provide designers with an extensive choice of 13 different fixed output voltage combinations, from 1.0V/1.0V through to 3.3V/3.3V. DIODES INC. http://ept.hotims.com/34481-75
LED driver outputs ac-dc single 16.8W LD015D Series ac-dc constant current LED driver power supply are fully potted and suitable for dry and damp locations. Devices are UL1310 Class 2 Safety Standards (110Vac) or CE compliant (230Vac). Product includes input voltage 110Vac or 230Vac, dc output ranges from 8 to 48Vdc and wide selection of preadjusted constant current outputs. Operating temperature range of -20C to +60C, phase dimmable, compatible with standard triac and electronic low voltage dimmers and are up to 82% efficient typical. POWER SOURCES UNLIMITED http://ept.hotims.com/34481-80
4 x 5mm integrated POL voltage regulators reduce footprint SupIRBuck integrated point-of-load (POL) voltage regulators in a compact 4 x 5mm package provide the same efficiency and functionality as previous generation devices in a 33% smaller footprint. Models IR38(53)(56)(59) devices integrate a high performance controller with latest generation MOSFETs deliver 4 A, 6 A and 9 A output current respectively to achieve more than 96% peak efficiency. Device provide over-voltage protection, an external synchronization option to reduce noise and EMI in multi-rail systems, true output voltage sensing option for adjustable PGOOD, and OV threshold setting. INTERNATIONAL RECTIFIER http://ept.hotims.com/34481-81
High-voltage power MOSFET reduces losses to 52% RJK60S5DPK high-voltage N-channel power metal-oxidesemiconductor field-effect-transistor (MOSFET) for power supply units, delivers high efficiency. Device is ideal for use in the primary power switching circuit of a power supply unit, which converts alternating current (ac) to direct current (dc). Product employs a high-precision super junction structure to achieve a figure of merit (FOM), a key overall performance index for power MOSFET devices, which is approximately 90% improved from firm’s existing products. RENESAS ELECTRONICS http://ept.hotims.com/34481-76
LED drivers serve as drop-in replacements for CCFL inverters
15 Watt chassis mount encapsulated ac-dc power supply
Series of LED driver boards come in new package configurations that provide footprint-compatibility with their existing CCFL inverter designs - in the same form factor as dc-ac inverters already in the field. These drop-in replacements allow for a fast, easy upgrade to LED lighting without re-designing or re-tooling the mounting hardware. Products are pin-forpin compatible with the inverters and have the same length and width dimensions as their counterparts as well as matching mounting holes. ENDICOTT RESEARCH
PC15 Series of ac-dc switching power supplies provides 15 Watts of output power in an encapsulated case. The optional Din-Rail mount and easily accessible terminal blocks give it the versatility to be used as a power solution in a large assortment of applications. Device operates from a standard 85 to 265Vac at 47 to 440Hz. Single output models are available with outputs from 5Vdc to 48Vdc. CONTECH
http://ept.hotims.com/34481-77
http://ept.hotims.com/34481-78
1W dc-dc converter boosts efficiency, lowers min load AM1D-RZ series of 1 watt power supplies includes 80 models with efficiency rates as high as 89% and load regulation of 6%. Input voltages of 5, 12, 24 and 48Vdc convert to single and dual output voltages of ±5, ±9, ±12 and ±15 VDC with momentary(1 sec) short circuit protection. Operating within an ambient temperature range of -40C to 85C at full load without derating, product series comes with I/O isolation of 1000Vdc or 3000Vdc with load regulation of 6% and low ripple and noise of typically 50mV p-p. AIMTEC http://ept.hotims.com/34481-82
Commercial Silicon Carbide Power MOSFET delivers 1200V blocking voltage CMF20120D SiC MOSFET provides blocking voltages up to 1200V with an on-state resistance (RDSon) of just 80m at 25C. Device’s RDSon remains below 100milli-ohms across its entire operating temperature range. Tests demonstrate the lowe gate drive energy (QG <100nC) across the recommended input voltage range. Conduction losses were minimized with forward drop (VF) of <2V at a current of 20A. CREE http://ept.hotims.com/34481-83
Power MOSFET lowers on-resistance to 16m+A6kModel SiA427DJ 8 V p-channel TrenchFET power MOSFET provides low on-resistance in a thermally enhanced PowerPAK SC-70 2 mm by 2 mm footprint area. Device provides an ultra-low on-resistance of 16mΩ at 4.5V, 26mΩ at 1.8V, 32mΩ at 1.5V and 95mΩ at 1.2V. Device can handle 40 % more power dissipation under the same ambient conditions, compared with a typical device in the standard SC-70 package. VISHAY INTERTECHNOLOGY
http://ept.hotims.com/34481-84
DIN-rail mount dc-dc converters operate with 12V, 24V, 48V inputs DPX Series DIN-rail mount 40-60W dc-dc converters operate with 12V, 24V and 48V inputs. Units come with both 2:1 and 4:1 input voltage ranges covering from 9.5V to 75V, with 40 to 60W output ratings. Products are available with single, dual or triple outputs. The single output models are available with an output voltage of 5V, 12V or 15V and the dualoutput models have 12V or 15V outputs. The triple-output models provide a main with either 12V or 15V outputs. Units come in a rugged metal case and can be mounted on either a TS35/7.5 or TS35/15 standard DIN rail. TDK-LAMBDA AMERICAS http://ept.hotims.com/34481-85
http://ept.hotims.com/34481-16
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