EVL150W-ADP-SR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

EVL150W-ADP-SR

12 V - 150 W resonant converter with synchronous rectification using the L6563H, L6599A, and SRK2000

STMicroelectronics 

Functional check

4

Functional check

AN3233

Steady-state operation

In Figure 7 some waveforms relevant to the resonant stage during steady-state operation

are given. The selected switching frequency is about 120 kHz, in order to have a good trade

off between transformer losses and dimensions. The converter operates slightly above the

resonance frequency.

Figure 8 shows the key signals of SRK2000: each rectifier MOSFET is switched on and off

according to its drain-source voltage which, during conduction time, is the voltage image of

the current flowing through the MOSFET.

Figure 7. Resonant stage waveforms

at 115 V – 60 Hz – full load

Figure 8. SRK2000 key signals

at 115 V – 60 Hz – full load

CH1: HB voltage

CH2: CF pin voltage

CH4: Res. tank current

CH1: GD1 pin voltage

CH3: GD2 pin voltage

CH2: DVS1 pin

CH4: DVS2 pin

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Doc ID 17595 Rev 1

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