Dual DC-DC converter family

4 June 2003 Power Electronics / Power Management

Designers of battery-powered equipment such as PDAs and laptops, require ever increasing levels of power efficiency to lengthen battery operating time. In response to this demand, Torex Semiconductor has unveiled the new XC950x family of dual DC-DC converters that provide stable output over a wide range of voltages. To ensure the highest power efficiency, each of the two converters' phase shifts 180° at the same frequency.

In all, the XC950x family comprises six series of devices: the step-up, step-up XC9501; the step-up, step-down XC9502; the step-down, step-down XC9503; the XC9505 with step-down and inverting output; and two devices with step-up and inverting output, the XC9504 and XC9506. All except the XC9506 employ a 0,09 V internal voltage reference. The XC9506 will accept an external voltage reference allowing designers to change the output by changing the external reference. Connecting the device's Vref pin to a DAC provides an excellent means of controlling an LCD bias voltage with ambient temperature.

Input voltage range is from 0,9 V to 10 V. Using externally-connected components, output voltage can be set up freely from 1,5 to 30 V. The new converters' 180 kHz switching frequency allows the size of external components to be greatly reduced thus saving valuable board space.

Using external signals the XC950x can be switched between PWM control and PWM/PFM automatic switching control. On selecting automatic switching control, control switches from PWM to PFM during periods of light load operating enabling the device to operate extremely efficiently across the full spectrum from light loads to large output currents.

On stand-by, current consumption reduces to a maximum of 3 µA. Soft-start time is internally set to 10 ms to protect against inrush current when the power is switched on and also to protect against voltage overshoot. The dual DC-DC converter series is available in a compact MSOP-10 package and also in a new 2,6 x 2,4 x 0,65 mm USP-10 chip scale package.

For more information contact Prime Semiconductors, 011 447 6527.

Further reading:

NVDC power-path control to 1– 6 cell battery systems
iCorp Technologies Power Electronics / Power Management
SG Micro’s SGM41581 is an I2C-controlled narrow voltage direct charging buck boost charge controller designed to simplify robust power delivery in systems that must seamlessly operate from an adapter input or a battery pack.

Read more...

---

Precise, adaptive battery health-monitoring
RS South Africa Power Electronics / Power Management
New fuel gauge solution from Nordic delivers State-of-Health reporting, adaptive battery modelling, and seamless fleet observability via nRF Cloud.

Read more...

---

Compact 6 A automotive buck converter
Altron Arrow Power Electronics / Power Management
Delivering up to 6 A of continuous output current, the DCP0606Y from STMicroelectronics enables efficient regulation of low-voltage rails commonly used in modern vehicle electronics and industrial systems.

Read more...

---

The new role of UPS technology in high-precision automation
Omron Electronics Power Electronics / Power Management
OMRON’s BU_2SW and BU_2RWL series UPS systems are engineered to offer a robust, online type power architecture designed to safeguard sensitive AC powered systems across a wide range of industries.

Read more...

---

Rugged railway-grade DC-DC power modules
iCorp Technologies Power Electronics / Power Management
iCorp Technologies has introduced the AIPUPOWER ZCD100 and ZCD150 Series, a family of rugged DC-DC converters designed to meet the demanding electrical and environmental requirements of railway and transportation systems.

Read more...

---

Four-quadrant regenerative grid simulator
Conical Technologies Power Electronics / Power Management
The IT7900EP series high-performance regenerative grid simulator from ITECH is a full four-quadrant AC grid simulator capable of both sourcing and sinking power.

Read more...

---

90 W PSU with 150% boost capability
Brabek Power Electronics / Power Management
RECOM’s cost effective REFIN2U-S90/CL DIN rail AC/DC boasts a 90 W rating with a boost capability of 150% for 4,5 seconds to allow for surge loads.

Read more...

---

Standalone USB PD controller
Future Electronics Power Electronics / Power Management
The STUSB4531 from STMicroelectronics is a standalone USB Power Delivery sink controller designed to streamline the implementation of USB-C power negotiation in sink devices without requiring a full software stack on a host microcontroller.

Read more...

---

Power module enhances AI data centre power density
Altron Arrow Power Electronics / Power Management
Microchip’s MCPF1525 power module with PMBus delivers 25 A DC-DC power and is stackable up to 200 A.

Read more...

---

MIL-Spec DC-DC power converters
Vepac Electronics Power Electronics / Power Management
PowerGood has introduced a range of 15 W to 600 W military DC-DC power converters engineered for mission critical defence applications.

Read more...

---