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Product Name: Fast responding DC/DC meets 3-GHz DSP system requirements
Product Description
PRODUCTS : New Power Plays
Fast responding DC/DC meets 3-GHz DSP system requirements
By Vince Biancomano
Courtesy of eeProductCenter
(12/08/2006 3:26 PM EST)
Dallas—Texas Instruments says its PTH08T240F 10-amp (non-isolated) power module has the required transient response characteristics to meet the 3 percent accuracy core voltage tolerance spec of TI's newest 3-GHz digital signal processors (DSPs), such as the TMS320TCI6487, with just 3,000 microfarads of external output capacitance.
The device, working from a 4.5-14 volt input and with an adjustable output from 0.7 to 2 volts, also supports point-of-load systems that use high-performance DSPs, microprocessors, ASICs and FPGAs.
This module, says TI, is the first to meet the core voltage tolerance requirements of TI's new TCI6487 DSP, which requires a core voltage rail between 0.9 and 1.1 volts with a source impedance of 2 milliohms. The regulator meets the TCI6487's voltage tolerance requirement of 15 mV for transient loads of up to 5 amps. More specifically, the chip incorporates TurboTrans technology for optimizing the power module's transient response and reducing the amount of output capacitance by up to eight times. The technology, according to TI, significantly reduces the peak output voltage deviation under transient load conditions, while saving the customer the cost and board space for additional capacitors.
The device's SmartSync technology allows for switching frequency synchronization of multiple modules, thereby simplifying electromagnetic interference (EMI) noise suppression tasks and reducing input capacitor ripple current requirements. The PTH08T240F also includes Auto-Track sequencing, which simplifies simultaneous power-up and power-down of multiple power modules in the system.
The chip also features over-current protection and programmable under-voltage lockout. In addition, the PTH08T240F offers over-temperature protection, on/off inhibit control, differential remote sense and an output regulation of 1.5 percent.
Click here to access the datasheet. The PTH08T240F is sampling now and is scheduled to be available in volume production in early 2007 from TI and its authorized distributors. The module comes in surface-mount and through-hole packages. Suggested retail pricing is $11.80 each in 1,000-piece quantities.
Company Details
The Power Management DesignLine site is managed by Editor Paul O'Shea.
Starting out his career in the "Live Music Capital" city of Austin, Texas more than 20 years ago, Paul began with testing the Texas Instruments Business Systems, and moved on... more
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