SPOC - BTS5482SF
Table of Contents
1
2
2.1
3
3.1
3.2
4
4.1
4.2
5
5.1
5.2
5.3
6
6.1
6.2
6.3
6.4
6.5
6.6
7
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
8
8.1
8.2
8.3
8.4
8.5
9
9.1
9.2
9.3
9.4
9.5
9.6
10
Overview
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Block Diagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Configuration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pin Assignment SPOC - BTS5482SF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Power Supply
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Stages
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output ON-State Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Stage Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inverse Current Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External Driver Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Protection Functions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inrush State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operative State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Timers and
n
retry
counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Undervoltage restarts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse Polarity Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Over Voltage Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of
V
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis Word at SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Load Current Sense Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch Bypass Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Open Load in OFF-State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Peripheral Interface (SPI)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI Signal Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Daisy Chain Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Timing Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI Protocol 8 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Register Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
13
14
15
16
16
16
18
19
20
21
25
25
31
31
32
34
34
34
34
34
35
37
38
39
41
41
42
45
45
46
47
48
50
51
Application Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
2
Rev. 1.0, 2013-06-05
Data Sheet
For Advanced Front Light Control
SPI Power Controller
SPOC - BTS5482SF
1
Features
•
•
•
•
•
•
•
•
•
Overview
8 bit serial peripheral interface for control and diagnosis
Integrated control for two external smart power switches
3.3 V and 5 V compatible logic pins
Very low stand-by current
Enhanced electromagnetic compatibility (EMC) for bulbs as well as
LEDs with increased slew rate
Stable behavior at under voltage
Device ground independent from load ground
Green Product (RoHS-Compliant)
AEC Qualified
PG-DSO-36-43
Description
The SPOC - BTS5482SF is a four channel high-side smart power switch in PG-DSO-36-43 package providing
embedded protective functions. It is especially designed to control standard exterior lighting in automotive
applications. In order to use the same hardware, the device can be configured to bulb or LED mode for channel 2
and channel 3. As a result, both load types are optimized in terms of switching and diagnosis behavior.
It is specially designed to drive exterior lamps up to 65W, 27W, 10W and HIDL.
Product Summary
Operating Voltage Power Switch
Logic Supply Voltage
Supply Voltage for Load Dump Protection
Maximum Stand-By Current at 25 °C
Typical On-State Resistance at
T
j
= 25 °C
channel 0, 1
channel 2, 3
Maximum On-State Resistance at
T
j
= 150 °C
channel 0, 1
channel 2, 3
SPI Access Frequency
V
S
V
DD
V
S(LD)
I
S(STB)
R
DS(ON,typ)
4.5 … 28 V
3.0 … 5.5 V
40 V
4.5 µA
4 mΩ
15 mΩ
8.5 mΩ
28 mΩ
5 MHz
R
DS(ON,max)
f
SCLK(max)
Type
SPOC - BTS5482SF
Data Sheet
Package
PG-DSO-36-43
4
Marking
BTS5482SF
Rev. 1.0, 2013-06-05
SPOC - BTS5482SF
Overview
Configuration and status diagnosis are done via SPI. The SPI is daisy chain capable. 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 short-circuit to
V
S
diagnosis. In OFF-state a current source can be switched to the output
of one selected channel in order to detect an open load.
The device provides an external driver capability for two external devices. For each external driver there are two
control outputs available: one output for controlling the input and one output for diagnosis enable input. The current
sense output of the external smart power drivers can be connected to the IS pin.
The SPOC - BTS5482SF provides a fail-safe feature via limp home input pin.
The power transistors are built by N-channel vertical power MOSFETs with charge pumps.
Protective Functions
•
•
•
•
•
•
•
•
•
Reverse battery protection with external components
Reversave
TM
- Reverse battery protection by self turn-on of channels 0, 1, 2 and 3
Short circuit protection
Over load protection
Thermal shutdown with latch and dynamic temperature protection
Over current tripping
Over voltage protection
Loss of ground protection
Electrostatic discharge protection (ESD)
Diagnostic Functions
•
•
•
•
•
•
•
•
Multiplexed proportional load current sense signal (IS)
Enable function for current sense signal configurable via SPI
High accuracy of current sense signal at wide load current range
Current sense ratio (
k
ILIS
) configurable for LEDs or bulbs for channel 2 and 3
Very fast diagnosis in LED mode
Feedback on over temperature and over load via SPI
Multiplexed switch bypass monitor provides short circuit to
V
S
detection
Integrated, in two steps programmable current source for open load in OFF-state detection
Application Specific Functions
•
•
Fail-safe activation via LHI pin
Control of two additional loads with external smart power switches
Applications
•
•
•
•
High-side power switch for 12 V grounded loads in automotive applications
Especially designed for standard exterior lighting like high beam, low beam, indicator, parking light and
equivalent LED modules.
Load type configuration via SPI (bulbs or LEDs) for optimized load control
Replaces electromechanical relays, fuses and discrete circuits
Data Sheet
5
Rev. 1.0, 2013-06-05
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