EVL6599A-90WADP: 19V @ 4.7A, 90 ~ 264 VAC

Summary

This note describes the performances of a 90 W, wide-range mains, power-factor-corrected AC-DC adapter reference board. Its electrical specification is tailored on a typical hi-end portable computer power adapter. The peculiarities of this design are the very low no-load input consumption (<0.4 W) and the very high global efficiency.

The architecture is based on a two-stage approach: a front-end PFC pre-regulator based on the L6563 TM PFC controller and a downstream multi-resonant half-bridge converter that makes use of the new L6599 resonant controller. The Standby function of the L6599, pushing the DCDC converter upon recognition of a light load to work in burst mode and the logic dedicated to stop the PFC stage allows meeting the severe no-load consumption requirement.

The PFC TM operation and the top-level efficiency performance of the HB-LLC topology provide also a very good overall efficiency of the circuit.

Specifications

Manufacturer	STMicroelectronics
Category	AC/DC and DC/DC Conversion
Sub-Category	AC/DC SMPS - Single Output
Eval Board Part Number	497-10542-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Board not Stocked
AC Voltage	115 V 230 V Universal (115 / 230V)
Outputs and Type	1 Isolated
Voltage Out	19 V
Current Out	4.7 A
Output Power	90 W
Features	Light Load Mode Over Current Protection PFC Short Circuit Protection Soft Start Under Voltage Protection, Brown-Out
Efficiency @ Conditions	>91%, 230V in, 19V @ 1.7 ~ 4.7 A >90%, 115V in, 19V @ 1.7 ~ 4.7 A
No-load Input Power @ Voltage	280 mW @ 115 V 340 mW @ 230 V
Switching Frequency	90 kHz
Internal Switch	No
Component Count + Extras	136 + 2
Voltage In	90 ~ 264 VAC
Design Author	STMicroelectronics
Application / Target Market	Computers
Main I.C. Base Part	L6563 L6599
Date Created By Author
Date Added To Library	2011-03