Quarter-brick power module

3 February 2010 Power Electronics / Power Management

The new QW24T25033 from Power-One is a quarter-brick DC-DC converter for use in communications, particularly wireless base station applications that utilise both 24 V and 48 V battery backup power.

This converter provides a 3,3 V output capable of delivering 25 A and performs equally well at nominal inputs of either 48VIN or 24VIN, where neither efficiency nor thermal performance are compromised.

The device, with efficiencies as high as 92%, offers a DOSA standard quarter-brick footprint (36,8 x 58,4 mm) and is RoHS compliant for all six substances. Additional features include a -40°C to +85°C operating temperature range, capability to withstand an 80 V input transient for 100 ms, ability to start up into pre-biased loads, and an onboard input differential LC filter.

The QW24T25033 offers remote sense, remote ON/OFF, negative or positive turn-on logic, and +10%/-20% output voltage trim ranges with industry-standard trim equations for design flexibility. Protections include output over-voltage and over-current, input under-voltage lockout, and over-temperature shutdown. Safety approvals include UL60950-1, CSA60950-1, EN60950-1 and IEC60950-1.

Further reading:

Analysis of switch-mode power supply: inductor violations
Altron Arrow Editor's Choice Power Electronics / Power Management
Common switch-mode power supply (SMPS) design errors are discussed, and their appropriate rectification is specified, with details on complications that arise with the power stage design of DC-DC switching regulators.

Read more...

---

Compact PCB-mount SMPS
RS South Africa Power Electronics / Power Management
Traco Power’s 5W PCB-mount switch mode power supply (SMPS) offers high efficiency, and is well suited for a variety of applications in the automation, electronics, electrical and mechanical industries.

Read more...

---

AC-DC brick PSU
Conical Technologies Power Electronics / Power Management
These PSUs have a typical efficiency of up to 92%, and a power factor value of up to 0,99. They are available in 12, 24, 28, 48 and 54 V output versions.

Read more...

---

5 kW switching PSU range
Conical Technologies Power Electronics / Power Management
Mornsun has released a new switching power supply range, the LMF5000-25Bxx, which has a 5000 W capacity, and features universal AC input configurations.

Read more...

---

Reliable charging range
Current Automation Power Electronics / Power Management
Whether you’re powering essential electronics, keeping emergency equipment operational, or maintaining the performance of critical machinery, the need for dependable charging solutions cannot be overstated.

Read more...

---

Microchip expands its mSiC solutions
EBV Electrolink Power Electronics / Power Management
The highly integrated 3,3 kV XIFM plug-and-play digital gate driver is designed to work out-of-the-box with high-voltage SiC-based power modules to simplify and speed system integration.

Read more...

---

Dual-port USB-C power delivery solution
Altron Arrow Power Electronics / Power Management
Infineon’s CYPD7272-68LQXQ is the tray packing option of the company’s dual-port USB-C power delivery solution and features an integrated dual-port USB-C PD + DC-DC controller.

Read more...

---

Parallel redundancy power module
Conical Technologies Power Electronics / Power Management
The LIR40-40 is a wide input range DC-DC module, with a constant output of 48 V at a nominal output current of up to 40 A.

Read more...

---

Motor protection relay front-end
NewElec Pretoria Power Electronics / Power Management
Newelec’s Motor Protection Relay front-end software isn’t just another tool, it’s a game changer that puts control firmly in your hands.

Read more...

---

High-power three-phase supplies
Current Automation Power Electronics / Power Management
The units from Meanwell can either be supplied with a three-phase three-wire delta input of 196 to 305 V AC, or they can use a three-phase four-wire star connection of 340 to 530 V AC.

Read more...

---