Electronics-Lab.com Blog

The LT3651 enables fast charging of Li-Ion/Polymer batteries by delivering up to 4A of continuous charge current with minimal power loss. This is due to its high efficiency switchmode topology, including on-chip synchronous MOSFETs. Its autonomous operation means no microcontroller is necessary and the device integrates an onboard C/10 or timer charge termination. The LT3651’s programmable input current limit with PowerPathTM control regulates charge current to maintain a constant supply current, preventing the input supply from collapsing.

• Wide Input Voltage Range: Up to 32V (40V Absolute Maximum)
• Programmable Charge Current Up to 4A
• Selectable C/10 or Onboard Timer Termination
• Dynamic Charge Rate Programming/Soft-Start
• Programmable Input Current Limit

LT3651 – Monolithic 4A High Voltage 1 Cell Li-Ion Battery Charger - [Link]

The LTM4641 is a 4.5V to 38V input, 0.6V to 6V output, 10A step-down μModule regulator with comprehensive input and load protection features. The part monitors input voltage, output voltage and temperature conditions. If any user-adjustable trip thresholds are exceeded, the LTM4641 responds quickly (within 500ns in the case of an output overvoltage fault), ceasing operation and if necessary activating external switches to protect both input source and load. As a μModule regulator, the LTM4641 includes power MOSFETs, DC/DC controller, inductor, compensation and the protection logic circuits in a compact surface mount BGA package.

• Wide Operating Input Voltage Range: 4.5V to 38V
• 10A DC Typical, 12A Peak Output Current
• Output Range: 0.6V to 6V
• ±1.5% Maximum Total Output DC Voltage Error
• Differential Remote Sense Amplifier for POL Regulation
• Internal Temperature, Analog Indicator Output

LTM4641 – 38V, 10A DC/DC µModule Regulator with Advanced Input and Load Protection - [Link]

This is a nice switchmode power supply with the following characteristics:

• Input Voltage 80-275 VAC
• Operating frequency. 47 -63 Hz 47 -63 Hz
• Maximum output power 320W
• Frequency of operation 130 KHz
• Adjustable Output Voltage 0 – 40V
• Output current adjustable from 0 – 20A at 15V
• Over temperature protection with indicator
• Automatic fan control with indicator
• 0-40V voltmeter and ammeter 0-40A LCD programmable USB
• Ammeter without resistive elements with Hall sensor 50A

- PWM module for this PSU

Switchmode Laboratory Power Supply - [Link]

The LTM®4600 is a complete 10A switchmode step-down power supply with a built-in inductor, supporting power components and compensation circuitry. With high integration and synchronous current mode operation, this DC/DC µModuleTM delivers high power at high efficiency in a tiny and low profile surface mount package. Supported by Linear Technology’s rigorous testing and high reliability processes, the LTM4600 simplifies the design and layout of your next power supply.

Features:

• 15mm x 15mm x 2.8mm LGA with 15°C/W θJA
• Pb-Free (e4), RoHS Compliant
• Only CBULK Required
• Standard and High Voltage:
  * LTM4600EV: 4.5V<=VIN<=20V
  * LTM4600HVEV: 4.5V<=VIN<=28V
• 0.6V<=VOUT<=5V
• IOUT: 10A DC, 14A Peak
• Parallel Two µModules for 20A Output

LTM4600 – 10A switchmode step-down power supply with a built-in inductor - [Link]

This new tool from TI helps you design the power stage of the most commonly used switch mode power supplies. It is also a useful aid to greater understanding of voltages and current flows inside converters – [via]

TI Power Stage Designer Tool 2.0 - [Link]

Dave takes you step-by-step through designing a DC-DC converter using the venerable MC34063. And then he build it and checks the performance. [via]

Design a DC to DC Switchmode Converter - [Link]