Texas Instruments Demonstration Card for UCC24610 UCC24610EVM-693 UCC24610EVM-693 Datenbogen
Produktcode
UCC24610EVM-693
5V
+
-
5V
+
-
User's Guide
SLUU450 – September 2010
UCC24610EVM-693 Secondary-Side Synchronous Rectifier
Controller Diode Replacement Demonstration Board
1
Introduction
This demonstration board is intended for use to evaluate efficiency improvements gained by synchronous
rectification compared with schottky diode rectification in low-power 5-V output circuits. System output
power level should be limited to 10 W or less (depending on the MOSFET used). The board is designed
for demonstration purposes only and thermal performance is not guaranteed. Forced cooling may or may
not be necessary. Maximum reverse blocking voltage, including spikes, must be less than 50-V peak. The
diode to be replaced must be arranged such that its anode is connected to GND (refer to
rectification compared with schottky diode rectification in low-power 5-V output circuits. System output
power level should be limited to 10 W or less (depending on the MOSFET used). The board is designed
for demonstration purposes only and thermal performance is not guaranteed. Forced cooling may or may
not be necessary. Maximum reverse blocking voltage, including spikes, must be less than 50-V peak. The
diode to be replaced must be arranged such that its anode is connected to GND (refer to
). Use
with any other diode connection arrangement may result in damage.
Figure 1. Replaced Diode's Anode Must Be Connected to GND
In situations with Discontinuous Conduction (DCM) of inductor current, the SR-controller is
self-commutating. In situations with Continuous Current (CCM) in the inductor, the SYNC input may be
used to avoid possible reverse conduction of the SR-MOSFET when the power-stage primary-side switch
turns on.
self-commutating. In situations with Continuous Current (CCM) in the inductor, the SYNC input may be
used to avoid possible reverse conduction of the SR-MOSFET when the power-stage primary-side switch
turns on.
2
UCC24610EVM-693 Secondary-Side Synchronous Rectifier Controller Diode
SLUU450 – September 2010
Replacement Demonstration Board
Copyright © 2010, Texas Instruments Incorporated