E-L6598D013TR Datasheet, PDF (1/24 Pages) STMicroelectronics – High voltage resonant controller

L6598
High voltage resonant controller
Features
■ High voltage rail up to 600 V
■ dV/dt immunity ±50 V/ns in full temperature
range
■ Driver current capability: 250 mA source
450 mA sink
■ Switching times 80/40 ns rise/fall with 1 nF load
■ CMOS shutdown input
■ Undervoltage lock-out
■ Soft-start frequency shifting timing
■ Sense op amp for closed loop control or
protection features
■ High accuracy current controlled oscillator
■ Integrated bootstrap diode
■ Clamping on Vs
■ SO16, DIP16 packages
Figure 1. Block diagram
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Description
The device is manufactured with the BCD OFF
LINE technology, able to ensure voltage ratings
up to 600 V, making it perfectly suited for AC/DC
Adapters and wherever a resonant topology can
be beneficial. The device is intended to drive two
power MOSFET, in the classical half bridge
topology. A dedicated timing section allows the
designer to set soft start time, soft start and
minimum frequency. An error amplifier, together
with the two enable inputs, are made available. In
addition, the integrated bootstrap diode and the
zener clamping on low voltage supply, reduces to
a minimum the external parts needed in the
applications.

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October 2009
Doc ID 6554 Rev 7
1/24
www.st.com
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