Triple output switching power supply controller

26 March 2003 Power Electronics / Power Management

A DC-to-DC switching power supply controller that combines the functions of three PWM and PSM converter ICs in a single device was launched by Vishay's Siliconix subsidiary. Aimed at consumer electronic appliances, the Si9139 takes a 4,5 to 30 V input voltage and converts it to three individual, tightly regulated DC-to-DC converter outputs, and one 5 V output. With 95% power conversion efficiency, the Si9139 integrates two main synchronous step-down controllers operating at up to 6 A, each with seven fixed outputs from 1,5 to 3,3 V, and an adjustable step-up/down controller whose output can be set to any value between 1,24 and 20 V with an external resistor divider. This adjustable capability on the third output at 500 mA is claimed to be an industry first. An on-board 5 V, 30 mA linear regulator provides an effective fourth output. The Si9139 in 28-pin SSOP has a 50 W power rating and ±3% total regulation by line, load, and temperature.

www.vishay.com

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...

---