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TLE6280GP Datasheet(PDF) 5 Page - Infineon Technologies AG

Part No. TLE6280GP
Description  3-Phase Bridge Driver IC
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

TLE6280GP Datasheet(HTML) 5 Page - Infineon Technologies AG

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Datasheet TLE6280GP
Vreg1 13V
+13 ... +8V
CH
CL
BH
1
BH
2
BH
3
BL
1
BL
2
BL
3
Vreg2=6V
Vreg3 =
Vreg1-8V
Triggered
by ILx
VS
C
CP
C
BH1
C
BL1
Phase A
Phase B
Phase C
= Pin
Bold line = external component
C
VS
from battery
R
VS
Fig. 2: Supply structure with external components (compare to Fig. 1)
rectly feed the low-side output stages and recharge the bootstrap capacitors connected to
GND.
As soon as the first of the 3 external low-side Mosfets is switched off, the CCP will be pulled
down to be re-charged.
This synchronous operation with the output stages has the benefit that the electromagnetic
emissions generated by the charge pump can be filtered by the same filter necessary to filter
the EME of the converter itself. At the same time it is assured that the high voltage at the CH
pin is available just in time to charge the high-side bootstrap.
IL1
IL2
! Timing of charge pump - Examples
1
2
1. ILx high
1. ILx low
CH
Charge of charge pump
capacitor
IL2
1. ILx high
1. ILx low
CH
IL1
Charge of charge pump capacitor
IL3
Charge of bootstrap
capacitors
Charge of bootstrap capacitors
IL3
5
2004-03-31
Fig. 3: Trigger timing of charge pump caused by changing input signals


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