Analog Devices, Inc. announces the LTC7124, a high efficiency, 4MHz synchronous dual output buck regulator that incorporates a constant frequency, peak current mode architecture. Optional spread spectrum frequency modulation is integrated for reducing radiated and conductive EMI noise. The device can deliver up to 3.5A of continuous output current from each channel or generate a […]
Regulators
High-efficiency, 4-MHz synchronous dual output buck regulators deliver 6 A/channel
Analog Devices, Inc., which recently acquired Linear Technology Corporation, announces the LTC3636 and LTC3636-1 are high efficiency, 4MHz synchronous dual output buck regulators that incorporate a unique constant frequency/controlled on-time, current mode control scheme with phase lockable switching frequency. Further, their innovative design architecture reduces conducted and radiated emissions. The devices can deliver up to […]
Synchronous buck regulators and overcurrent protection (OCP)
by Haifeng Fan, Intersil, a subsidiary of Renesas Electronics Synchronous buck regulators are widely used in industrial and infrastructure applications to step down 12V rails to point-of-load inputs as low as 0.6V for microcontrollers, FPGAs, memory and peripheral I/Os. Overcurrent protection (OCP) is essential to protect these switching regulators from damage by excessive current. Cycle-by-cycle current […]
DC-DC converter modules come in SIPs for board mounting
Eight new dc-dc converters from MEAN WELL span the one to six-watt power range and come in single in-line packages (SIPs). Two of the converters are unregulated 1-W devices while the rest provide 2, 3, and 6-W outputs. All provide ultra-wide input range (the widest 4:1) and an ultra-wide range of working temperatures (-40~+90°C) and […]
Synchronous step-down silent switcher delivers 94% efficiency at 2MHz
Analog Devices, Inc. announces the LT8645S, an 8A, 65V input capable synchronous step-down switching regulator. Its unique Silent Switcher® 2 architecture uses two internal input capacitors as well as internal BST and INTVCC capacitors to minimize the area of the hot loops. Combined with very well controlled switching edges and internal construction with an integral […]
Synchronous step-down silent switcher puts out 6 A, features ultra-low EMI/EMC emissions
Analog Devices, Inc., which recently acquired Linear Technology Corporation, announces the LT8640S, a 6A, 42V input synchronous step-down switching regulator. Its unique Silent Switcher 2 architecture uses two internal input capacitors as well as internal BST and INTVCC capacitors to minimize the area of the hot loops. Combined with very well controlled switching edges and an […]
Step-down regulator meets CISPR 22 Class B specs
Analog Devices, Inc., which recently acquired Linear Technology Corporation, announces the LTM8073, a µModule® (power module) step-down regulator with up to 60V input voltage range (65V abs max). The device can safely operate from unregulated or fluctuating 24V to 48V input supplies in noisy environments such as communication infrastructure, factory automation, industrial robotics and avionics […]
Sync buck regulators step down inputs to just 0.6 V
Intersil, a subsidiary of Renesas Electronics Corporation (TSE: 6723), today introduced five synchronous buck regulators that step-down 12V rails to point-of load inputs as low as 0.6V for MCUs, FPGAs, memory and peripheral I/Os. The newest members of the ISL850xx family consist of the ISL85014, ISL85012, ISL85009, ISL85005A and ISL85005 buck regulators. They deliver 14A, […]
What is a charge pump and why is it useful? part 1
Converting an available DC source to a lower or higher voltage is a very common challenge in circuits. One option for the high-to-low conversion is to use a low-dropout regulator (LDO), but how can an LDO easily transform a lower voltage into a higher one? The answer for AC voltages is well-known: use a transformer, […]
Avoiding mobile device brownouts
By Chuck Wong, Intersil, a Renesas Company With the ever-increasing performance of mobile application processors and GPUs, the need for a buck-boost regulator to stabilize the Li-ion battery supply-voltage terminals is becoming more and more important. Buck-boost regulators prevent brownout (a condition where power is briefly lost) by boosting the supply voltage during the notching […]
