TEA1610T View Datasheet(PDF) - NXP Semiconductors.
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TEA1610T Datasheet PDF : 21 Pages
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NXP Semiconductors
TEA1610P; TEA1610T
Zero-voltage-switching resonant converter controller
8. Functional description
8.1 Start-up
When the applied voltage at VDD reaches VDD(initial) (see Figure 5), the low side power
switch is turned-on while the high side power switch remains in the non-conducting state.
This start-up output state guarantees the initial charging of the bootstrap capacitor (Cboot)
used for the floating supply of the high side driver.
During start-up, the voltage on the frequency capacitor (Cf) is zero and defines the
start-up state. The output voltage of the error amplifier is kept constant (typ. 2.5 V) and
switching starts at about 80 % of the maximum frequency at the moment pin VDD reaches
the start level.
The start-up state is maintained until VDD reaches the start level (13.5 V), the oscillator is
activated and the converter starts operating.
VDD
0
GH-SH
0
GL
0
Fig 5. Start-up
VDD(start)
VDD(initial)
t
mgt998
TEA1610T_P_3
Product data sheet
Rev. 03 — 26 March 2007
© NXP B.V. 2007. All rights reserved.
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