High input voltage regulator delivers 3 A peak in very small footprint

4 June 2003 Power Electronics / Power Management

Linear Technology's LT3431, a high voltage constant frequency step-down switching regulator that uses a 3 A internal switch, can operate within a VIN range of 5,5 to 60 V and can deliver up to 2,75 A of continuous output current at voltages as low as 1,25 V. This makes it ideal for telecom, automotive and industrial applications.

Its unique high voltage architecture enables efficiencies as high as 90% even in low duty cycle applications. The LT34301 uses a constant 500 kHz switching frequency, keeping external components small. A sync pin allows for external synchronisation from 580 to 700 kHz with logic level inputs. It comes in a thermally enhanced TSSOP package that optimises heat dissipation within a very small, low profile circuit footprint.

The LT3431 has a high efficiency 3 A, 0,1 Ω switch, with the necessary oscillator, control and logic circuitry integrated into a single die. Special design techniques and a new high voltage process enable high efficiency over a wide input voltage range while its current mode topology enables fast transient response and superior loop stability.

Patented circuitry maintains peak switch current over the entire duty cycle range. Supply current is only 2,5 mA during normal operation, while shutdown current is reduced to 30 µA.

For more information contact Memec SA, 011 897 8600, [email protected]

Further reading:

3-terminal filters for automotive applications
RS South Africa Power Electronics / Power Management
TDK has expanded its YFF series of 3-terminal filters for automotive applications to include higher voltages up to 35 V and higher capacitances up to 4,7 µF.

Read more...

---

Simple battery charger ICs for any chemistry
Altron Arrow Editor's Choice Power Electronics / Power Management
The LTC4162 is a highly integrated, high voltage multi-chemistry synchronous monolithic step-down battery charger and PowerPath manager with onboard telemetry functions and optional maximum power point tracking.

Read more...

---

Why your PoE budget could make or break your next installation
Power Electronics / Power Management
In South Africa’s often unpredictable networking environments, understanding and planning your PoE budget is essential for system reliability, customer satisfaction, and long-term scalability.

Read more...

---

Five-minute EV charging a reality
Power Electronics / Power Management
Successfully demonstrated in Beijing recently at the Shanghai auto show, BYD claimed to add 400 km of range in just five minutes of charging.

Read more...

---

The evolution of power management in electronics
TRX Electronics Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.

Read more...

---

Power and precision in a compact package
Conical Technologies Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.

Read more...

---

Robust PoE module
CST Electronics Power Electronics / Power Management
The Ag59800-LPB high power, IEEE 802.3bt compliant, PD module from Silvertel offers typical efficiency of 95% making it an ideal choice for higher power, space-constrained applications.

Read more...

---

Cutting-edge solutions for Africa’s clean energy future
Power Electronics / Power Management
As Africa pushes towards reliable, affordable, and sustainable energy, Sungrow is driving transformation with cutting-edge innovations that enhance grid stability, reduce energy costs, and expand access to clean power.

Read more...

---

Transformer protection is a critical safeguard for municipal power stability
Power Electronics / Power Management
Transformer protection is not just a technical requirement; it is a vital component in ensuring the resilience and operational integrity of South Africa’s municipal power infrastructure.

Read more...

---

Reliable power solution
Conical Technologies Power Electronics / Power Management
The Mibbo MLD-120W-xxVx is a robust DIN-rail mounted DC-DC converter with a 120 W output capacity specifically designed for industrial and automation applications.

Read more...

---