EVLSTRNG-170W
170 W SMPS with digitally controlled PFC and resonant LLC stage
based on the STNRG388A
Data brief
Description
The EVLSTNRG-170W evaluation board is
intended for evaluating the STNRG388A digital
controller in off-line power conversion applications
such as digital industrial power supplies.
The solution implements a PFC stage followed by
a resonant LLC stage supporting up to 170 W.
The application supports multiple output rails: a
high power 24 V (6 A) channel for the main
application, 1 auxiliary 12 V (2 A) for the controller
and an always-on 5 V (2 A) standby.
(9/6751*:
The STNRG388A power conversion dedicated
peripherals (SMEDs) offer the flexibility to drive
the PFC in transition mode (DCM-CCM boundary)
while the resonant LLC is controlled with timeshift
control (TSC). In parallel to managing the two
conversion stages, STNRG388A guarantees all
the protections required by the application as well
as implementing the advanced Anti Capacitive
protection.
Features
• Digital controller: STNRG388A
• Enhanced constant ON Time PFC
• Timeshift controlled LLC
• Max. power: 170 W
• Efficiency: more than 91% at full load
• Standby consumption: @
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2
Revision history
Revision history
Table 1. Document revision history
Date
Revision
18-May-2015
1
Changes
Initial release.
DocID027881 Rev 1
9/10
10
EVLSTRNG-170W
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