Power Management I Product News
‘Power Block’ DC-DC converter module targets FPGA and embedded applications
The latest addition to the OKLP range of ‘Power Block’ products from Murata Power Solutions is the OKLP-X/35-W12-C, a 35A Power Block solution. This Power Block concept sits between a discrete Point-of-Load (PoL) design and that of a complete non-isolated buck converter module. The Power Block is essentially a non-isolated buck converter without the PWM controller. Measuring 25.4 x 12.7 x 11.1 mm the OKLP- X/35-W12-C power block has a typical efficiency rating of 94%. Input voltage is a nominal 12 VDC and can accommodate the range of 7 to 13.2 VDC.
The Power Block design approach allows the power engineer to achieve the highest efficiency and maximum possible power and current density while maintaining a high performance system at a lower cost when compared to a complete module design approach. Murata’s Power Block provides a single package solution that incorporates all of the power handling components, fully tested and characterised for thermal and dynamic performance. This design approach is suitable for power-hungry FPGAs, ASICs, computing and IBA architectures. Most analogue or digital PWM controllers can be used with the Power Block; however, the maximum benefits are achieved when coupled with ZMDI’s ZSPM1035 single-phase digital PWM IC controller family.
The combination of ZMDI’s ZSPM1035 and the 35A Murata Power Block is able to provide a ready, tested, and optimally preconfigured 35A
point-of-load solution. Designers have access to a full downloadable construction kit that includes step-by-step instructions and a software wizard. ZMDI’s Pink Power Designer GUI allows fast module configuration that speeds time-to- market. The digital control loop provides ultra- fast transient response, steady-state performance, stability, and design flexibility. Up to four different output capacitor ranges can be supported by selecting the preconfigured ZMDI controller. To support customers during the initial
introduction of this product, Mouser Electronics as an authorised distributor for both ZMDI and Murata Power Solutions will be able to provide the ZMDI controllers, GUI interface, Murata’s OKLP and Evaluation Boards.
Murata Europe |
www.murata.eu Vicor delivers ChiP power modules
Vicor Corporation has unveiled the first module utilising its Converter housed in Package (ChiP) power component platform. These new ChiP bus converter modules (BCM) supply 1.2 kW at 48 V with 98% peak efficiency and 115 W/cm3 power density. This performance – 4X the density of competing solutions – enables efficient, high voltage DC distribution infrastructure in datacenter, telecom, and industrial applications. The ChiP platform leverages advanced magnetic structures that are integrated within high density interconnect (HDI) substrates with power semiconductors and control ASICs, in order to provide improved thermal management supporting enhanced power density. Thermally- adept ChiPs enable customers to achieve low cost power system solutions quickly and predictably. According to Vicor the advent of ChiPs embodies a modular power system design methodology that will enable designers to achieve high performance, cost-effective power systems from AC or DC sources to the Point of Load using proven building blocks. “ChiPs will enable power system architects to
overcome the power density constraints imposed by conventional power solutions,” said Patrizio Vinciarelli, CEO, Vicor. “ChiPs maximise performance while minimising development cost and time to market, yielding superior solutions with the flexibility and scalability of modular building blocks.” With a nominal input voltage of 380V and a K-factor of 1/8, these new ChiP BCM fixed-ratio power converters supply an isolated 48V distribution bus with a peak efficiency of 98%.
3 Watt isolated DC-DC converters reduce board space and cut power consumption
CUI Inc has introduced two isolated dc-dc converter families for industrial, test and measurement, and
telecommunication applications. Rugged and compact the PQMC3-S and PQM3-M families increase total efficiency across the entire load curve and give improved performance at light and no loads. The converters are intended for battery-powered applications where power draw under these conditions are a concern. Rated at 3 W, the PQMC3-S Series is available with input ranges of 4.5~9, 9~18, 18~36, or 36~75 Vdc while the PQM3-M Series offers input ranges of 9~18, 18~36, or 36~75 Vdc. Both families come equipped with an operating temperature range of -40° to + 85°C at 100% load, allowing the dc-dc converters to work reliably in harsh environments.
The PQMC3-S Series is housed in a compact 8 pin SIP package measuring 0.86" x 0.37" x 0.47" (22 mm x 9.5 mm x 12 mm) and the PQM3-M series is housed in a 16 pin SMT package measuring 0.94" x 0.54" x 0.30"
(23.86 mm x 13.70 mm x 7.50). Both families are available in single output voltages of 5, 12, or 15 Vdc while the SIP version PQMC3-S is also available in dual output voltages of ±5, ±12, or ±15 Vdc. Outputs are fully regulated to within ±0.2% (typ.) for all line and load conditions. Input to output isolation of 1,500 Vdc is provided across the range of models. Protections include continuous short circuit and over current. The dc-dc converters meet CISPR22/EN55022 Class B standards with limited external components.
CUI Inc |
www.cui.com
New DCR sensing technique cuts switching jitter when using low DCR sensing applications
With its input range of 260 to 410 V, the BCM supports outputs ranging from 32.5 V to 51.25 V. BCMs are based on Vicor’s ZCS/ZVS Sine Amplitude Converter topology and operate at a 1.25 MHz switching frequency, providing fast response time and low noise operation. Offered in the 6123 ChiP package, the new 380 VDC VI Chip BCMs measure 63mm by 23mm, with a height of only 7.3mm. Initially offered as a through-hole device, package options will also include SMD variants. ChiP BCMs may be paralleled to provide multi-kW arrays and are capable of bi-directional operation to support battery backup and renewable energy applications. Standard BCM features include under-over-voltage lockout, over-current, short circuit and over-temperature protection. ChiP BCMs incorporate digital telemetry and control features that can be configured to meet customer requirements.
Vicor Power |
www.vicorpower.com Yuasa extends high discharge rate range
Yuasa Battery Sales (UK) has extended its SWL family of industrial valve regulated lead-acid (VRLA) batteries with a new high capacity 12V model, the SWL4250. Suitable for use in uninterruptible power supply (UPS) and similar high discharge rate applications, the SWL4250 typically provides up to 40% extra high-rate discharge capacity when compared with standard NPL series batteries. It features a nominal 10hr rate capacity of 140Ah to 10.8V at 20°C with 10-min rate
28 February 2014
constant power of 4,250W to 9.6V at 20°C. Standby life expectancy is up to 10 years (design life at 20°C) and EUROBAT classification is high performance, 10 to 12 years.
The SWL4250 features a UL94HB ABS case material as standard with flame retardant (FR) option available for UL94V0 applications. The battery can be installed and operated in any orientation except permanently inverted and complies with IEC61056 and IEC60896-21/22.
Components in Electronics
The LTC3875 from Linear Technology is a dual output current-mode synchronous step- down DC/DC controller that enables the use of very low DC resistance (DCR) power inductors by using a novel DCR sensing architecture that enhances the signal-to-noise ratio of the current sense signal. Power inductor DCR, as low as 0.2 milliohms can be used without a sense resistor to maximise converter efficiency and increase power density. This new DCR sensing technique dramatically reduces the switching jitter normally associated with low DCR sensing applications. The LTC3875 operates over an input voltage range of 4.5V to 38V and produces a fixed output voltage from 0.6V to 3.5V with +/-0.5% accuracy from -40°C to 125°C. Dual onboard differential amplifiers provide true remote output voltage sensing of both output voltages. Up to 12 phases can be paralleled and clocked out-of- phase to minimise input and output filtering. When both outputs are paralleled, the LTC3875 maintains less than +/-5% current mismatch between phases, making it suitable for very high current requirements up to 360A. Precise programmable current sense limits and DCR temperature compensation limit the maximum output current precisely over temperature. Applications include high current power distribution, redundant (n+1) supplies, industrial
systems, processor and ASIC power. The LTC3875 has a selectable fixed operating
frequency from 250kHz to 720kHz or it can be synchronised to an external clock. Powerful 1.1 Ohm onboard all N-channel gate drivers minimise MOSFET switching losses. Its adjustable current limit can be configured for very low sense voltages from 10mV to 30mV to minimize power loss. The second channel features a fast transient circuit that improves the load-step-up transient by up to 30% . Additional features include adjustable soft-start or tracking, foldback current limit, short-circuit soft recovery, output over- voltage protection and a power good output voltage monitor.
Linear Technology |
www.linear.com
Case dimensions are 341 x 173 x 281mm high with typical mass of 49kg. Operating temperature ranges are -15 to +50°C (charging) and -20 to +60°C (discharging). Optimum storage temperature in fully charged condition is from -20 to +50°C. Additional specifications include low self- discharge characteristics during storage, maximum discharge current of 840A for 1s or 420A for 1min and impedance of 2.7mΩ measured at 1kHz.
Yuasa |
www.yuasaeurope.com www.cieonline.co.uk
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48