Programmable buck regulators

1 May 2013 Power Electronics / Power Management

Vicor announced 14 new additions to its PI33XX Picor Cool-Power ZVS buck regulator product line for high-efficiency point-of-load (POL) DC-DC regulation. This product line extension includes higher-current devices and optional I²C fault telemetry and programmability.

The integration of a high-performance zero-voltage switching (ZVS) topology enhances point-of-load performance, providing elevated power efficiency for wide Vin operation. This topology enables high power density and high-frequency operation that maximises efficiency by minimising the significant switching losses associated with conventional hard-switching buck regulators.

The products are designed to convert 8 V to 36 V inputs to high-current, low-voltage POL system rails such as 3,3 V, 2,5 V, 1,8 V and 1 V. They can support conversions with large step-down ratios up to the rated input voltage of 36 V, enabling system designers to deploy more efficient power distribution schemes that rely on a higher input voltage source.

All products in the PI33XX series are highly integrated with control circuitry, power semiconductors and support components in a high-density 10 x 14 x 2,56 mm LGA System-in-Package (SiP). Power delivery can be further increased by interleaving multiple Cool-Power ZVS buck regulators using single-wire current sharing without the need for any additional components.

The regulators require only an external inductor and minimal ceramic capacitors for input and output filtering to form a complete high-performance regulator. No frequency compensation, parametric settings or incremental external components are required.

For designers challenged by complex distribution power schemes, the devices offer an optional I²C extended fault telemetry capability allowing for six distinct types of fault reporting. Additional device-programmable I²C features include output margining, enable pin and synchronisation pin logic polarity, and phase delay. Device programming is easily performed via the Cool-Power Development Tool.

Further reading:

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...

---

Compact power MOSFET for high current switching
Future Electronics Power Electronics / Power Management
onsemi’s NTMFSC2D6N08X is a high-performance 80 V N-channel power MOSFET engineered for demanding switching and power conversion applications.

Read more...

---

DC link capacitors for demanding applications
RS South Africa Power Electronics / Power Management
TDK Corporation has announced the B3271xP series of DC link film capacitors, offering high thermal robustness for demanding automotive and industrial power electronics.

Read more...

---

N-channel power MOSFETs
TRX Electronics Power Electronics / Power Management
The TSM2N7002 series from Taiwan Semiconductor are logic-level N-channel power MOSFETs designed with low drain-source on-state resistance, reducing conduction losses and improving efficiency in switching applications.

Read more...

---

Smart power protection, simplified
TRX Electronics Power Electronics / Power Management
onsemi electronic fuses (eFuses) deliver integrated, intelligent protection by combining overcurrent, overvoltage, over-temperature, reverse polarity, and inrush current safeguards in a single compact IC.

Read more...

---