Texas Instruments SN6505B | Demoboard SN6505BEVM

Description

This SN6505A and SN6505B evaluation module allows the user to evaluate the performance and featuresof the SN6505A and SN6505B in an actual isolated power application. This includes the transformer,rectifier, and low-dropout (LDO) voltage regulator shown in Figure 1.The complementary output signals (D1 and D2) from the SN6505x are ground-referenced, N-channel,power switches that drive the primary side of the center-tapped transformer. The secondary of thetransformer has its center-tap referenced to an isolated ground, and the complementary outputs arerectified through a simple two-diode bridge. The make-before-break feature of the two driver outputs fromthe SN6505x ensures that only one side of the transformer is driven at a time. After being rectified, the dcvoltage is smoothed and routed to the TPS76701QD voltage regulator. The regulator outputs a stable,regulated +5-Vdc output that is used to drive downstream circuitry.

Features

Low-noise 1-A transformer driver for isolated power supplies, 420-kHz internal clock5-V input, 5-V output isolated powerSimple rectifier circuit along with low droput (LDO) regulator gives rectified voltage of 5 VProvision for feeding external clock to the deviceEVM tested for device functionality; user's guide allows designer to evaluate their design

More information

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• IC product information