SPI Power Controller
SPOC - BTS5566G
Block Diagram
2
Block Diagram
The SPOC - BTS5566G is a five channel high-side power switch in PG-DSO-36-34 package providing embedded
protective functions. An 8 bit serial peripheral interface (SPI) is used for configuration and diagnosis. The SPI can
be used in daisy chain configuration.
The device provides a current sense signal per channel that is multiplexed to the diagnosis pin IS. It can be
enabled and disabled via SPI commands. An over load and over temperature flag is provided in the SPI diagnosis
word. A multiplexed switch bypass monitor provides diagnosis at short-circuit to VBB.
The power transistors are built by N-channel vertical power MOSFETs with charge pumps. The device is
monolithically integrated in SMART SIPMOS technology.
VBB
power
supply
temperature
sensor
clamp for
inductive
load
IN0
IN1
IN2
IN3
IN4
gate control
&
charge pump
driver
logic
load current
limitation
load current
sense
OUT4
OUT3
OUT2
OUT1
OUT0
4
3
2
1
channel 0
ESD
protection
switch bypass
monitor
IS
current sense multiplexer
limp home control
LHI
PWM control
CS
SCLK
SO
SPI
SI
GND
Figure 2
Block Diagram SPOC - BTS5566G
Data Sheet
6
Rev. 1.3, 2007-10-30