BTS 6480SF Infineon Technologies, BTS 6480SF Datasheet - Page 20

• Manufacturer Part Number: BTS 6480SF
• Manufacturer: Infineon Technologies

Specifications of BTS 6480SF

• Packages: PG-DSO-36
• Channels: 4.0
• Channel Mix: 2*4,5mohm+2*11mohm
• Led Mode: Yes
• Cranking Mode: No
• Pwm Engine Integrated: Yes

6.3.1
Channel 2 and channel 3 can be configured in bulb and LED mode via the SPI registers HWCR.LEDn. During LED
mode following parameters are changed for an optimized functionality with LED loads: On-state resistance
R
and current sense ratio
6.3.2
When switching resistive loads the following switching times and slew rates can be considered.
Figure 7
6.3.3
When switching off inductive loads with high-side switches, the voltage
because the inductance intends to continue driving the current. To prevent the destruction of the device due to
high voltages, there is a voltage clamp mechanism implemented, which limits that negative output voltage to a
certain level (
the energy capability, the clamp voltage
Please refer also to
6.4
During inverse currents (
applied inverse currents no ERR-flag is set.
The functionality of unaffected channels is not influenced by inverse currents applied to other channels (except
effects due to junction temperature increase). Influences on the diagnostic function of unaffected channels are
possible only for the current sense ratio, please refer to
Note: No protection mechanism like temperature protection or current protection is active during applied inverse
Data Sheet
DS(ON)
currents. Inverse currents cause power losses inside the DMOS, which increase the overall device
temperature, which could lead to a switch off of the unaffected channels due to over temperature.
, switching timings (
90% of V
70% of V
30% of V
10% of V
Bulb and LED mode
Switching Resistive Loads
Switching a Load (resistive)
Switching Inductive Loads
Inverse Current Behavior
V
DS(CL)
OUTx
V
IN /
OUT
BB
BB
BB
BB
Section
(6.6.2)). See
k
ILIS
t
delay(ON )
V
t
OUT
delay(ON)
.
t
ON
8.6. The maximum allowed load inductance is limited.
>
Figure 6
V
,
BB
t
t
ON(rise)
delay(OFF)
dV /
dt
) the affected channel stays in ON- or in OFF-state. Furthermore, during
ON
V
for details. The device provides SmartClamp functionality. To increase
DS(CL)
,
t
ON
,
increases with the junction temperature
t
OFF
), slew rates d
20
70%
30%
dt
k
dV /
OFF
ILIS(IC)
t
delay(OFF )
t
OFF
(9.8.3).
V
/d
t
OFF (f all)
t
ON
and d
V
t
t
OUT
V
/d
drops below ground potential,
t
OFF
, current protections
SPOC - BTS6480SF
T
SwitchOn.emf
Rev. 1.0, 2010-04-12
j
and load current
Power Stages
I
L(trip)
I
L
.