NXP Semiconductors UM10972 User Manual

UM10972
TEA1916DB1262 digital resonant 240 W/12 V power supply
demo board
Rev. 1.1 — 8 June 2018
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Keywords TEA1916DB1262, TEA19161T, TEA19162T TEA1995T 240 W, LLC,
resonant, half-bridge, PFC, controller, converter, burst mode, power supply,
demo board, high efficiency, 80+ certification
Abstract The TEA19161T is a digital LLC controller. It is used in combination with the
PFC controller TEA19162T.Combining these two ICs with the SR controller
TEA1995T at the secondary side results in a high-efficient resonant converter
over the whole output power range.
This document describes such a resonant power supply design with a 240 W
(12 V/20 A) typical output power.
It operates in normal mode for high and medium power levels, in low-power
mode at medium and low power levels, and in burst mode at (very) low power
levels.
Low-power mode and burst mode operation provide a reduction of power
losses, resulting in a higher efficiency at lower output power levels. Power
levels for switching over from one mode to another mode can be selected by
adjusting component values.
The efficiency at high power levels is well above 90 %.
No-load power consumption is well below 100 mW.
At 250 mW output power, the input power is well below the 500 mW (complies
easily with EUP lot6).
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