ESBT for SMPS designs

1 October 2008 Power Electronics / Power Management

STMicroelectronics has introduced a new ESBT (emitter-switched bipolar transistor) power switch, which enables engineers to improve efficiency, cost, component count and size in auxiliary switched-mode power supplies (SMPS) for single- and three-phase applications.

The STC03DE220HV is the first in a new family of ESBTs rated for 2200 V breakdown voltage, allowing designers to use a single-switch flyback topology in universal-input converters operating from 90 to 690 V a.c.

Operating efficiently at 150 kHz maximum switching frequency and 3 A maximum rated current, the STC03DE220HV can be used in a wide range of auxiliary SMPS applications including industrial utility metering, inverter drives for induction motors, welding equipment and uninterruptible power supplies.

Using ESBT technology, the STC03DE220HV betters standard bipolar transistors as well as high-voltage MOSFETs by combining low on-state losses with the traditional MOSFET advantages of high switching frequency and easy gate-driver design. The STC03DE220HV achieves an equivalent on-resistance of 0,33 Ω, from the collector to source.

Further reading:

New compact AC-DC PSU series
Vepac Electronics Power Electronics / Power Management
COSEL has announced the expansion of its medical power offering with the addition of the new UMA series, the first three models being the 30 W UMA30F, the 60 W UMA60F and the 120 W UMA120F.

Read more...

---

Power efficiency and robustness in electronics design
Power Electronics / Power Management
Mouser Electronics recently announced a new eBook in collaboration with Analog Devices highlighting essential strategies for optimising power systems.

Read more...

---

USB Type-C-powered controllers
Future Electronics Power Electronics / Power Management
Diodes Incorporated has released two USB Type-C PD 3.1 extended power range sink controllers that can be embedded into battery-powered devices.

Read more...

---

Multicell battery monitoring
Altron Arrow Power Electronics / Power Management
The LTC6811 from Analog Devices is a multicell battery stack monitor that measures up to 12 series connected battery cells with a total measurement error of less than 1,2 mV.

Read more...

---

Full telemetry in tiny DC-DC converters
RS South Africa Power Electronics / Power Management
The FS160* series of µPOL DC-DC converters from TDK all offer full telemetry, provide increased performance, and are remarkable for extraordinary power density in the smallest sizes.

Read more...

---

Power IC supplies 1650 W
EBV Electrolink Power Electronics / Power Management
Power Integrations has announced a two-fold increase in power output from the HiperLCS-2 chipset with the new device now being able to deliver up to 1650 W of continuous output power.

Read more...

---

High-voltage step-down DC-DC converter
Altron Arrow Power Electronics / Power Management
The MAX17793 is a high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operating over an input voltage range of 3 to 80 V.

Read more...

---

High-voltage contactors
RS South Africa Power Electronics / Power Management
TDK Corporation has announced two new additions to its high-voltage contactor portfolio for harsh environments: the HVC43MC with integrated mirror contact and the HVC45 with enhanced short-circuit current handling capability.

Read more...

---

Chokes rated at 36 A
RS South Africa Power Electronics / Power Management
TDK Corporation has launched the EPCOS SurfIND series, a new range of current-compensated ring core double chokes for high currents and surface mounting.

Read more...

---

RF arrestor provides robust protection
RFiber Solutions Power Electronics / Power Management
NexTek’s range of coaxial RF surge and lightning arrestors are designed and built to provide robust protection for any radio or coaxial RF transmission application.

Read more...

---