3 LM5169FQEVM Evaluation Module
The LM5169FQEVM EVM is configured to deliver a regulated 10-V output, 0.3 A at 750-kHz switching
frequency, and an additional 10-V, 0.3 A floating output. The LM5169 uses a COT control architecture, with
input voltage feed-forward, to provide constant frequency regulator with tightly regulated output voltage. This
type of control requires adequate voltage ripple at the FB input to achieve stable regulation. The LM5169FQEVM
is set up with type III ripple injection to minimize the output voltage ripple, while ensuring a stable regulator. The
LM5169FQEVM also provides the option to use type I or type II ripple injection. See the LM5169 data sheet for
more information. An overall view of the LM5169FQEVM and the schematic are shown in
Please note that for EVMs labeled as
LM5168FQEVM
, that the LM5168F is installed and approximately one half
of the load current is available from this device. Both EVMs are identical, except for the converter IC installed.
3.1 Quick Start Procedure
1. Connect the input voltage supply to the VIN connector (+ and -).
2. Connect the load(s) to the VOUT and the VOUT2 connectors (+ and -).
3. Set the input supply voltage to an appropriate level between 20 V to 115 V.
4. Turn on the power supply. The EVM powers up and provides V
OUT
= 10 V, and V
OUT2
= 10 V.
See
for the location of the connectors.
CAUTION
Caution Hot surface.
Contact may cause burns.
Do not touch.
Figure 3-1. LM5169FQEVM Top View
LM5169FQEVM Evaluation Module
6
LM5169FQEVM EVM User Guide
SNVU757 – JUNE 2021
Copyright © 2021 Texas Instruments Incorporated
