EVL130W-STRLIG STMicroelectronics, EVL130W-STRLIG Datasheet - Page 19

• Manufacturer Part Number: EVL130W-STRLIG
• Description: BOARD EVAL L6562AT L6599AT
• Manufacturer: STMicroelectronics

Specifications of EVL130W-STRLIG

• Current - Output / Channel: 2.7A
• Outputs And Type: 1, Isolated
• Voltage - Output: 48V
• Features: EN55022 class B compliant
• Voltage - Input: 85 ~ 305 V
• Utilized Ic / Part: L6562AT, L6599AT
• Description/function: SMPS for LED Street Lighting Applications
• Data Bus Width: 4 bit
• Maximum Clock Frequency: 30 MHz
• Maximum Power Dissipation: 130 W
• Operating Supply Voltage: 85 V to 305 V
• Operating Voltage: 48 V
• Product: Display Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6562AT, L6599AT
• Other names: 497-10541

AN3106
4.5
Figure 25. EVL130W-STRLIG demonstration
CH1: V_OUT_PFC
CH3: DELAY pin
Figure 25
of the board during short-circuit operation. Thanks to the narrow operating time with respect
to the off-time, the average output current as well as the average primary current are limited.
This will avoid converter overheating and consequent failures. Removing the short allows
the board to resume normal operation.
Figure 26
the LLC stage. The open loop operation provides an increase also of the auxiliary voltage
that will trigger the L6599AT pin #9 (DIS) protection pin via the Zener diode D17. As
a consequence, the L6599AT will shut down, stopping the operation. The L6599AT will
activate also the PFC_STOP pin (#9) that will stop the PFC too, thus both controllers will no
longer be powered by V
a new startup cycle will take place. This sequence continues until the open loop is removed.
Converter startup
Figure 27
begins operation in ~300 ms, while at 230 V
needed to charge the V
switching and the PFC output voltage starts increasing. Once the PFC output voltage
reaches the enable level set via the L6599AT LINE pin, even the LLC stage starts switching
and the output voltage rises up to the nominal level. The V
coil charge pump, and then once the L6599AT starts operating, the V
the LLC transformer auxiliary winding. The details of converter sequencing can be found in
Figure 28
board: short-circuit at 115 V
- 60 Hz - full load
shows the operation of the DELAY pin and the consequent hiccup mode operation
shows the operation of the demonstration board during “open loop” operation by
and
and
CH2: HB voltage
CH4: U1 pin INV
Figure 29
Figure
30.
CC
CC
show the converter startup. We note that at 115 V
. Once V
to the L6562AT turn-on voltage. Thus the L6562AT starts
AC
Doc ID 16775 Rev 1
CC
drops below the UVLO, the latch is removed and then
Figure 26. EVL130W-STRLIG demonstration
CH1: Q1_Drain
CH3: V
AC
OUT
it takes around 150 ms. This is the time
board: open loop at 115 V
- 65 W load
CC
is initially supplied by the PFC
CH2: HB voltage
CH4: DIS pin
CC
is also provided by
Functional check
AC
the converter
AC
- 60 Hz
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