BTS721L1_10 [INFINEON]
Smart High-Side Power Switch; 智能高侧电源开关型号: | BTS721L1_10 |
厂家: | Infineon |
描述: | Smart High-Side Power Switch |
文件: | 总18页 (文件大小:1401K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Smart High-Side Power Switch
Smart High-Side Power Switch
PROFET BTS721L1
Data Sheet
Rev. 1.3, 2010-03-16
Automotive Power
Smart High-Side Power Switch
BTS721L1
Smart Four Channel Highside Power Switch
Features
Product Summary
Overvoltage Protection
Operating voltage
•
•
•
•
•
Overload protection
Current limitation
Vbb(AZ)
43
5.0 ... 34
two parallel four parallel
V
V
Short-circuit protection
Thermal shutdown
Overvoltage protection
V
bb(on)
active channels:
one
100
2.9
8
On-state resistance RON
Nominal load current ꢀꢀꢁꢂꢃꢄꢅ
50
4.3
8
25
6.3
8
mΩ
A
A
(including load dump)
Fast demagnetization of inductive loads
•
•
•
1
)
Reverse battery protection
Current limitation
ꢀꢀꢁꢆꢇꢈꢅ
ꢉ
Undervoltage and overvoltage shutdown
with auto-restart and hysteresisꢀ
Open drain diagnostic output
•
PG-DSO20
• Open load detection in ON-state
•
•
•
CMOS compatible input
Loss of ground and loss of V protection
Electrostatic discharge (ESD) protection
bb
Application
•
µC compatible power switch with diagnostic feedback
for 12 V and 24 V DC grounded loads
All types of resistive, inductive and capacitive loads
Replaces electromechanical relays and discrete circuits
•
•
General Description
N channel vertical power FET with charge pump, ground referenced CMOS compatible input and diagnostic
feedback, monolithically integrated in Smart SIPMOS technology. Providing embedded protective functions.
Pin Definitions and Functions
Pin
1,10,
11,12,
15,16,
19,20
3
Symbol Function
Positive power supply voltage. Design the
Pin configuration (top view)
V
bb
wiring for the simultaneous max. short circuit
currents from channel 1 to 4 and also for low
thermal resistance
V
1
2
3
•
20 V
19 V
18 OUT1
17 OUT2
bb
bb
GND1/2
IN1
ST1/2
IN2
bb
IN1
IN2
Input 1 .. 4, activates channel 1 .. 4 in case of
logic high signal
4
5
7
5
16 V
IN3
bb
GND3/4
IN3
ST3/4
IN4
6
7
8
9
15 V
14 OUT3
13 OUT4
9
18
17
14
13
4
IN4
bb
OUT1
OUT2
OUT3
OUT4
ST1/2
Output 1 .. 4, protected high-side power output
of channel 1 .. 4. Design the wiring for the
max. short circuit current
12 V
bb
V
10
11 V
bb
bb
Diagnostic feedback 1/2 of channel 1 and
channel 2, open drain, low on failure
Diagnostic feedback 3/4 of channel 3 and
channel 4, open drain, low on failure
8
ST3/4
2
6
GND1/2 Ground 1/2 of chip 1 (channel 1 and channel 2)
GND3/4 Ground 3/4 of chip 2 (channel 3 and channel 4)
1)
With external current limit (e.g. resistor R =150 Ω) in GND connection, resistor in series with ST
GND
connection, reverse load current limited by connected load.
Data Sheet
2
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Block diagram
Four Channels; Open Load detection in on state;
ꢁꢀꢂ
ꢃꢃ
ꢏꢗꢖꢝ!ꢚꢖ"ꢗ
&ꢛꢚꢚꢗꢙꢕ
ꢔꢒ"ꢒꢕꢀꢆ
%ꢖꢕꢗꢀꢆ
ꢜꢚꢐꢕꢗꢓꢕꢒꢐꢙ
ꢂꢐꢔꢕꢖꢑꢗ
ꢘꢐꢛꢚꢓꢗ
ꢍ ꢗꢚ ꢐꢔꢕꢖꢑꢗ
ꢜꢚꢐꢕꢗꢓꢕꢒꢐꢙ
&ꢞꢖꢙꢙꢗꢔꢀꢆ
ꢀ ꢏꢐꢑꢒꢓ
ꢆ+
ꢍꢎꢈꢆ
ꢏꢒ"ꢒꢕꢀ!ꢐꢚ
ꢂꢐꢔꢕꢖꢑꢗ
ꢘꢗꢙꢘꢐꢚ
ꢏꢗ ꢗꢔꢀꢘꢞꢒ!ꢕꢗꢚ
#ꢗꢓꢕꢒ!ꢒꢗꢚꢀꢆ
ꢛꢙꢓꢔꢖ"ꢜꢗꢝ
ꢒꢙꢝ$ꢀꢔꢐꢖꢝꢘꢀꢆ
ꢈꢗ"ꢜꢗꢚꢖꢕꢛꢚꢗ
ꢘꢗꢙꢘꢐꢚꢀꢆ
'
)
(
ꢄꢅꢆ
ꢄꢅꢊ
ꢍꢜꢗꢙꢀꢔꢐꢖꢝ
ꢇꢞꢐꢚꢕꢀꢕꢐꢀꢂꢃꢃ
ꢝꢗꢕꢗꢓꢕꢒꢐꢙꢀꢆ
&ꢞꢖꢚꢑꢗ
ꢜꢛ"ꢜꢀꢆ
ꢏꢐꢑꢒꢓ
ꢋꢇꢌ
ꢇꢈꢆꢉꢊ
&ꢞꢖꢚꢑꢗ
ꢜꢛ"ꢜꢀꢊ
%ꢖꢕꢗꢀꢊ
ꢜꢚꢐꢕꢗꢓꢕꢒꢐꢙ
&ꢛꢚꢚꢗꢙꢕ
ꢔꢒ"ꢒꢕꢀꢊ
&ꢞꢖꢙꢙꢗꢔꢀꢊ
ꢍꢎꢈꢊ
ꢆ*
ꢏꢗ ꢗꢔꢀꢘꢞꢒ!ꢕꢗꢚ
#ꢗꢓꢕꢒ!ꢒꢗꢚꢀꢊ
ꢏꢒ"ꢒꢕꢀ!ꢐꢚ
ꢆꢇꢈꢉ
ꢛꢙꢓꢔꢖ"ꢜꢗꢝ
ꢒꢙꢝ$ꢀꢔꢐꢖꢝꢘꢀꢊ
ꢊ
%ꢅꢌꢆꢉꢊ
ꢈꢗ"ꢜꢗꢚꢖꢕꢛꢚꢗ
ꢘꢗꢙꢘꢐꢚꢀꢊ
ꢍꢜꢗꢙꢀꢔꢐꢖꢝ
ꢇꢞꢐꢚꢕꢀꢕꢐꢀꢂꢃꢃ
ꢝꢗꢕꢗꢓꢕꢒꢐꢙꢀꢊ
#
#
ꢍꢆ
ꢍꢊ
ꢇꢒꢑꢙꢖꢔꢀ%ꢅꢌ
&ꢞꢒꢜꢀꢆ
%ꢅꢌꢆꢉꢊ
&ꢞꢒꢜꢀꢆ
ꢏꢐꢖꢝꢀ%ꢅꢌ
ꢁꢀꢂ
ꢃꢃ
ꢏꢗꢖꢝ!ꢚꢖ"ꢗ
&ꢞꢖꢙꢙꢗꢔꢀ'
ꢆ(
ꢍꢎꢈ'
ꢏꢐꢑꢒꢓꢀꢖꢙꢝꢀꢜꢚꢐꢕꢗꢓꢕꢒꢐꢙꢀꢓꢒꢚꢓꢛꢒꢕꢀꢐ!ꢀꢓꢞꢒꢜꢀꢊ
0ꢗ1ꢛꢒ ꢖꢔꢗꢙꢕꢀꢕꢐꢀꢓꢞꢒꢜꢀꢆ2
*
,
+
ꢄꢅ'
ꢄꢅ(
ꢇꢈ'ꢉ(
&ꢞꢖꢙꢙꢗꢔꢀ(
ꢍꢎꢈ(
ꢆ'
ꢆꢇꢈꢉ
/
%ꢅꢌ'ꢉ(
ꢀꢁꢂꢃꢄꢅ
#
#
ꢍ'
ꢍ(
%ꢅꢌ'ꢉ(
ꢇꢒꢑꢙꢖꢔꢀ%ꢅꢌ
&ꢞꢒꢜꢀꢊ
ꢏꢐꢖꢝꢀ%ꢅꢌ
&ꢞꢒꢜꢀꢊ
ꢏꢗꢖꢝ!ꢚꢖ"ꢗꢀꢓꢐꢙꢙꢗꢓꢕꢗꢝꢀꢕꢐꢀꢜꢒꢙꢀꢆ-ꢀꢆ.-ꢀꢆꢆ-ꢀꢆꢊ-ꢀꢆ)-ꢀꢆ/-ꢀꢆ,-ꢀꢊ.
Data Sheet
3
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Maximum Ratings at Tj = 25°C unless otherwise specified
Parameter
Symbol
Values
Unit
Supply voltage (overvoltage protection see page 4)
Vbb
Vbb
43
34
V
V
Supply voltage for full short circuit protection
Tj,start =-40 ...+150°C
Load current (Short-circuit current, see page 5)
IL
self-limited
60
A
V
Load dump protection2) VLoadDump = UA + Vs, UA = 13.5 V VLoad
4)
RI3) = 2 Ω, td = 200 ms; IN= low or high,
dump
each channel loaded with RL = 4.7Ω,
Operating temperature range
Storage temperature range
Power dissipation (DC)5
(all channels active)
Tj
Tstg
-40 ...+150
-55 ...+150
°C
W
Ta = 25°C: Ptot
Ta = 85°C:
3.7
1.9
Inductive load switch-off energy dissipation, single pulse
Vbb =12V, Tj,start =150°C5),
0.3
0.65
1.5
J
IL = 2.9 A, ZL = 58mH, 0Ω
IL = 4.3 A, ZL = 58mH, 0Ω
IL = 6.3 A, ZL = 58mH, 0Ω
see diagrams on page 9 and page 10
one channel: EAS
two parallel channels:
four parallel channels:
Electrostatic discharge capability (ESD)
(Human Body Model)
VESD
1.0
kV
Input voltage (DC)
VIN
IIN
IST
-10 ... +16
±2.0
V
mA
Current through input pin (DC)
Current through status pin (DC)
see internal circuit diagram page 8
±5.0
Thermal resistance
junction - soldering point5),6)
each channel: Rthjs
15 K/W
junction - ambient5)
one channel active: Rthja
all channels active:
41
34
2)
Supply voltages higher than Vbb(AZ) require an external current limit for the GND and status pins, e.g. with a
150 Ω resistor in the GND connection and a 15 kΩ resistor in series with the status pin. A resistor for input
protection is integrated.
3)
4)
5)
R = internal resistance of the load dump test pulse generator
VLoad dump is setup without the DUT connected to the generator per ISO 7637-1 and DIN 40839
Device on 50mm*50mm*1.5mm epoxy PCB FR4 with 6cm2 (one layer, 70µm thick) copper area for V
connection. PCB is vertical without blown air. See page 15
Soldering point: upper side of solder edge of device pin 15. See page 15
I
bb
6)
Data Sheet
4
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Electrical Characteristics
Parameter and Conditions, each of the four channels Symbol
Values
Unit
at Tj = 25 °C, V = 12 V unless otherwise specified
bb
min
--
typ
max
Load Switching Capabilities and Characteristics
On-state resistance (V to OUT)
bb
mΩ
IL = 2 A
each channel,
Tj = 25°C: RON
Tj = 150°C:
85
170
100
200
two parallel channels, Tj = 25°C:
four parallel channels, Tj = 25°C:
43
22
50
25
--
Nominal load current
one channel active: IL(NOM)
two parallel channels active:
four parallel channels active:
2.5
3.8
5.9
2.9
4.3
6.3
A
Device on PCB5), Ta = 85°C, Tj ≤ 150°C
Output current while GND disconnected or pulled
IL(GNDhigh)
--
--
10
mA
up; V = 30 V, V = 0, see diagram page 9
bb
IN
Turn-on time
Turn-off time
to 90% VOUT: ton
to 10% VOUT: toff
80
80
200
200
400
400
µs
RL = 12 Ω, T =-40...+150°C
j
Slew rate on
10 to 30% VOUT, RL = 12 Ω,
dV/dton
0.1
0.1
--
--
1 V/µs
1 V/µs
T =-40...+150°C:
j
Slew rate off
70 to 40% VOUT, RL = 12 Ω,
-dV/dtoff
T =-40...+150°C:
j
Operating Parameters
Operating voltage7)
Tj =-40...+150°C: Vbb(on)
Tj =-40...+150°C: Vbb(under)
Tj =-40...+25°C: Vbb(u rst)
Tj =+150°C:
5.0
3.5
--
--
--
--
34
V
V
V
Undervoltage shutdown
Undervoltage restart
5.0
5.0
7.0
Undervoltage restart of charge pump
Vbb(ucp)
--
--
5.6
0.2
7.0
V
V
see diagram page 14
Tj =-40...+150°C:
Undervoltage hysteresis
∆Vbb(under) = Vbb(u rst) - Vbb(under)
∆Vbb(under)
--
Overvoltage shutdown
Overvoltage restart
Overvoltage hysteresis
Overvoltage protection8)
Ibb = 40 mA
Tj =-40...+150°C: Vbb(over)
Tj =-40...+150°C: Vbb(o rst)
Tj =-40...+150°C: ∆Vbb(over)
Tj =-40...+150°C: Vbb(AZ)
34
33
--
--
--
43
--
V
V
V
V
0.5
47
--
42
--
Standby current, all channels off
VIN = 0
Tj =25°C: Ibb(off)
Tj =150°C:
--
--
28
44
60
70
µA
7)
At supply voltage increase up to V =5.6V typ without charge pump, V
≈V - 2 V
bb
bb
OUT
8)
see also V
in circuit diagram on page 8.
ON(CL)
Data Sheet
5
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
ꢀ
Parameter and Conditions, each of the four channels Symbol
Values
Unit
at Tj = 25 °C, V = 12 V unless otherwise specified
bb
min
--
typ
max
12
Leakage output current (included in Ibb(off)
)
IL(off)
--
µA
V
IN = 0
Operating current 9), VIN = 5V, j =-40...+150°C
T
IGND
--
--
2
8
3
12
mA
I
GND = IGND1/2 + IGND3/4
,
one channel on:
four channels on:
Protection Functions10)
Initial peak short circuit current limit, (see timing
diagrams, page 13)
each channel, j =-40°C: IL(SCp)
11
9
5
18
14
8
25
22
14
A
T
j =25°C:
T
j =+150°C:
T
two parallel channels
four parallel channels
twice the current of one channel
four times the current of one channel
Repetitive short circuit current limit,
Tj = Tjt
each channel IL(SCr)
two parallel channels
four parallel channels
--
--
--
8
8
8
--
--
--
A
(see timing diagrams, page 13)
Initial short circuit shutdown time
Tj,start =-40°C: toff(SC)
Tj,start = 25°C:
--
--
15
12
--
--
ms
V
(see page 12 and timing diagrams on page 13)
Output clamp (inductive load switch off)11)
at VON(CL) = Vbb - VOUT
VON(CL)
--
47
--
Thermal overload trip temperature
Thermal hysteresis
Tjt
150
--
--
--
--
°C
K
∆Tjt
10
Reverse Battery
)
Reverse battery voltage 12
-Vbb
--
--
--
32
--
V
Drain-source diode voltage (V > V
)
bb
-VON
610
mV
out
L =-2.9A, T =+150°C
j
I
9)
Add I , if I > 0
ST
ST
10)
Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as "outside" normal operating range. Protection functions are not
designed for continuous repetitive operation.
11)
12)
If channels are connected in parallel, output clamp is usually accomplished by the channel with the lowest
V
ON(CL)
Requires a 150 Ω resistor in GND connection. The reverse load current through the intrinsic drain-source
diode has to be limited by the connected load. Note that the power dissipation is higher compared to normal
operating conditions due to the voltage drop across the intrinsic drain-source diode. The temperature
protection is not active during reverse current operation! Input and Status currents have to be limited (see
max. ratings page 3 and circuit page 8).
Data Sheet
6
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
ꢀ
Parameter and Conditions, each of the four channels Symbol
Values
Unit
at Tj = 25 °C, V = 12 V unless otherwise specified
bb
min
typ
max
Diagnostic Characteristics
Open load detection current, (on-condition)
20
20
20
--
--
--
400
300
300
mA
each channel, Tj = -40°C: I L (OL)
1
Tj = 25°C:
Tj = 150°C:
twice the current of one channel
four times the current of one channel
two parallel channels
four parallel channels
Open load detection voltage13
Tj =-40..+150°C: VOUT(OL)
2
3
4
V
)
Internal output pull down
(OUT to GND), V
=5V
Tj =-40..+150°C: RO
4
10
30
kΩ
OUT
Input and Status Feedback14)
Input resistance
RI
2.5
1.7
1.5
3.5
--
6
3.5
--
kΩ
V
(see circuit page 8)
Tj =-40..+150°C:
Input turn-on threshold voltage
Input turn-off threshold voltage
Input threshold hysteresis
VIN(T+)
Tj =-40..+150°C:
VIN(T-)
--
V
Tj =-40..+150°C:
∆ VIN(T)
--
1
0.5
--
--
V
Off state input current
Tj =-40..+150°C:
VIN = 0.4 V: IIN(off)
50
µA
On state input current
Tj =-40..+150°C:
VIN = 5 V: IIN(on)
20
50
90
µA
µs
Delay time for status with open load after switch
off (other channel in off state)
(see timing diagrams, page 14),
td(ST OL4)
td(ST OL5)
td(ST)
100
320
800
Tj =-40..+150°C:
Delay time for status with open load after switch
off (other channel in on state)
(see timing diagrams, page 14),
--
--
5
20
µs
µs
Tj =-40..+150°C:
Status invalid after positive input slope
200
600
(open load)
Tj =-40..+150°C:
Status output (open drain)
Zener limit voltage Tj =-40...+150°C, IST = +1.6 mA: VST(high)
5.4
--
--
6.1
--
--
--
0.4
0.6
V
ST low voltage
Tj =-40...+25°C, IST = +1.6 mA: VST(low)
Tj = +150°C, IST = +1.6 mA:
13)
External pull up resistor required for open load detection in off state.
14)
If ground resistors R
are used, add the voltage drop across these resistors.
GND
Data Sheet
7
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Truth Table
Channel 1 and 2
Channel 3 and 4
IN1
IN3
IN2
IN4
OUT1
OUT3
OUT2
OUT4
ST1/2
ST3/4
Chip 1
Chip 2
(equivalent to channel 1 and 2)
BTS 721L1
Normal operation
Open load
L
L
H
H
L
L
H
L
H
L
H
L
L
L
H
H
Z
Z
H
L
H
L
H
L
H
H
H
H
15)
Channel 1 (3)
H(L
)
H
X
H
X
H
L
15)
Channel 2 (4)
Channel 1 (3)
L
H
X
L
L
H
L
L
H
L
H
X
L
H
X
H
H
H
Z
Z
H
L
H
X
H(L
)
H
L
16)
Short circuit to V
Overtemperature
bb
L
H
17)
16)
H(L
L
)
Channel 2 (4)
both channel
L
H
X
L
X
H
L
H
X
X
X
L
L
H
L
H
X
X
X
L
H
X
L
H
X
L
L
L
L
L
X
X
L
H
H
H
L
L
L
X
X
L
L
L
H
17)
H(L
)
H
L
L
H
L
H
L
H
Channel 1 (3)
Channel 2 (4)
Undervoltage/ Overvoltage
L = "Low" Level
H = "High" Level
X = don't care
Z = high impedance, potential depends on external circuit
Status signal valid after the time delay shown in the timing diagrams
Parallel switching of channel 1 and 2 (also channel 3 and 4) is easily possible by connecting the inputs and
outputs in parallel (see truth table). If switching channel 1 to 4 in parallel, the status outputs ST1/2 and ST3/4
have to be configured as a 'Wired OR' function with a single pull-up resistor.
Terms
ꢄ
ꢃꢃ
ꢂ
ꢂ
ꢍꢅꢆ
ꢍꢅ'
ꢂ
ꢏꢗꢖꢝ!ꢚꢖ"ꢗ
ꢏꢗꢖꢝ!ꢚꢖ"ꢗ
ꢃꢃ
ꢂ
ꢂ
ꢍꢅꢊ
ꢍꢅ(
ꢄ
ꢄ
ꢄ
ꢄ
ꢄꢅꢆ
ꢄꢅꢊ
ꢄꢅ'
ꢄꢅ(
ꢂ
ꢂ
ꢃꢃ
ꢃꢃ
'
)
*
,
ꢄ
ꢄ
ꢄ
ꢄ
ꢄꢅꢆ
ꢄꢅ'
ꢏꢆ
ꢏ'
ꢆ+
ꢆ*
ꢆ(
ꢆ'
ꢍꢎꢈꢆ
ꢍꢎꢈꢊ
ꢍꢎꢈ'
ꢍꢎꢈ(
ꢀꢁꢂꢃꢄꢅ
ꢀꢁꢂꢃꢄꢅ
ꢄꢅꢊ
ꢄꢅ(
ꢏꢊ
ꢏ(
&ꢞꢒꢜꢀꢆ
&ꢞꢒꢜꢀꢊ
ꢄ
ꢄ
ꢇꢈ'ꢉ(
ꢇꢈꢆꢉꢊ
(
+
ꢇꢈꢆꢉꢊ
ꢇꢈ'ꢉ(
ꢂ
ꢄꢅꢆ
ꢂ
ꢄꢅ'
ꢂ
ꢂ
%ꢅꢌꢆꢉꢊ
ꢊ
%ꢅꢌ'ꢉ(
/
ꢂ
ꢇꢈꢆꢉꢊ
ꢂ
ꢇꢈ'ꢉ(
ꢄꢅꢊ
ꢄꢅ(
ꢂ
ꢍꢎꢈꢆ
ꢂ
ꢍꢎꢈ'
ꢂ
ꢂ
ꢍꢎꢈ(
ꢄ
ꢄ
ꢍꢎꢈꢊ
%ꢅꢌꢆꢉꢊ
%ꢅꢌ'ꢉ(
#
#
%ꢅꢌꢆꢉꢊ
%ꢅꢌ'ꢉ(
Leadframe (V ) is connected to pin 1,10,11,12,15,16,19,20
bb
External R
optional; two resistors R
,R
=150 Ω or a single resistor R
=75 Ω for
GND
GND1/2
GND3/4
GND
reverse battery protection up to the max. operating voltage.
15)
16)
With additional external pull up resistor
An external short of output to Vbb in the off state causes an internal current from output to ground. If RGND is
used, an offset voltage at the GND and ST pins will occur and the VST low signal may be errorious.
17)
Low resistance to V may be detected by no-load-detection
bb
Data Sheet
8
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Overvoltage protection of logic part
GND1/2 or GND3/4
Input circuit (ESD protection), IN1...4
ꢁꢀꢂ
#
ꢃꢃ
ꢄ
ꢄꢅ
ꢂ
4ꢊ
#
ꢄ
ꢄꢅ
ꢄꢅ
ꢋꢇꢌ34ꢌ ꢄ
ꢄ
ꢄ
ꢆꢇꢊꢋꢌ
%ꢅꢌ
ꢇꢈ
#
ꢇꢈ
ꢂ
4ꢆ
ESD zener diodes are not to be used as voltage clamp at
DC conditions. Operation in this mode may result in a drift of
the zener voltage (increase of up to 1 V).
%ꢅꢌ
#
%ꢅꢌ
ꢇꢒꢑꢙꢖꢔꢀ%ꢅꢌ
Status output, ST1/2 or ST3/4
V
Z1
= 6.1 V typ., V = 47 V typ., R = 3.5 kΩ typ.,
Z2
I
R
GND
= 150 Ω
ꢁ)ꢂ
#
ꢇꢈ0ꢍꢅ2
Reverse battery protection
ꢟꢀ)ꢂ
ꢇꢈ
ꢂ
3
ꢃꢃ
ꢋꢇꢌ3
#
ꢇꢈ
ꢆꢇꢊꢋꢌ
4ꢌ
%ꢅꢌ
#
ꢄ
ꢄꢅ
ꢇꢈ
ꢍꢎꢈ
ESD-Zener diode: 6.1 V typ., max 5.0 mA; R
ST(ON)
< 380 Ω
5ꢐ7ꢗꢚ
ꢄꢙ ꢗꢚꢘꢗ
ꢌꢒꢐꢝꢗ
at 1.6 mA, ESD zener diodes are not to be used as voltage
clamp at DC conditions. Operation in this mode may result in
a drift of the zener voltage (increase of up to 1 V).
%ꢅꢌ
#
#
ꢏ
%ꢅꢌ
Inductive and overvoltage output clamp,
OUT1...4
5ꢐ7ꢗꢚꢀ%ꢅꢌ
ꢇꢒꢑꢙꢖꢔꢀ%ꢅꢌ
R
GND
= 150 Ω, R = 3.5 kΩ typ,
I
ꢁꢂ
ꢃꢃ
Temperature protection is not active during inverse current
operation.
ꢂ
4
ꢂꢍꢅ
ꢍꢎꢈ
5#ꢍ6ꢋꢈ
5ꢐ7ꢗꢚꢀ%ꢅꢌ
V
ON
clamped to V = 47 V typ.
ON(CL)
Data Sheet
9
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Open-load detection, OUT1...4
GND disconnect with GND pull up
(channel 1/2 or 3/4)
ON-state diagnostic condition:
V
ON
< R
·
I
; IN high
ON L(OL)
ꢁꢀꢂ
ꢃꢃ
ꢂ
ꢃꢃ
ꢄꢅꢆ
ꢍꢎꢈꢆ
ꢍꢎꢈꢊ
ꢂ
ꢄꢅꢆ
ꢀꢁꢂꢃꢄꢅ
ꢄꢅꢊ
ꢇꢈ
ꢂ
ꢄꢅꢊ
ꢂ
ꢍꢅ
ꢍꢅ
%ꢅꢌ
ꢍꢎꢈ
ꢂꢍꢎꢏꢐꢑꢇꢈꢉ
ꢉꢎꢒꢎꢌꢒꢋꢇꢏ
ꢂ
ꢏꢐꢑꢒꢓ
ꢛꢙꢒꢕ
ꢂ
%ꢅꢌ
ꢇꢈ
ꢂ
ꢃꢃ
Any kind of load. If V
> V - V
device stays off
IN(T+)
GND
IN
Due to V
GND
> 0, no V = low signal available.
ST
OFF-state diagnostic condition:
V
OUT
> 3 V typ.; IN low
V
disconnect with energized inductive
bb
load
#
ꢋ9ꢈ
ꢂ
ꢃꢃ
ꢄꢅꢆ
ꢍꢎꢈꢆ
ꢞꢒꢑꢞ
ꢍ66
ꢀꢁꢂꢃꢄꢅ
ꢄꢅꢊ
ꢂ
ꢍꢎꢈꢊ
ꢍꢎꢈ
ꢇꢈ
%ꢅꢌ
ꢂꢍꢎꢏꢐꢑꢇꢈꢉ
ꢉꢎꢒꢎꢌꢒꢋꢇꢏ
ꢏꢐꢑꢒꢓ
ꢛꢙꢒꢕ
#
ꢍ
ꢂ
ꢃꢃ
ꢇꢒꢑꢙꢖꢔꢀ%ꢅꢌ
For an inductive load current up to the limit defined by E
AS
(max. ratings see page 3 and diagram on page 10) each
switch is protected against loss of V
.
bb
GND disconnect
Consider at your PCB layout that in the case of Vbb dis-
connection with energized inductive load the whole load
current flows through the GND connection.
(channel 1/2 or 3/4)
ꢐ
ꢄ
ꢃꢃ
ꢂ
ꢃꢃ
ꢂ
ꢃꢃ
ꢄꢅꢆ
ꢄꢅꢊ
ꢇꢈ
ꢍꢎꢈꢆ
ꢀꢁꢂꢃꢄꢅ
ꢍꢎꢈꢊ
%ꢅꢌ
ꢂ
ꢄꢅꢆ ꢄꢅꢊ
ꢂ
ꢂ
%ꢅꢌ
ꢂ
ꢇꢈ
Any kind of load. In case of IN=high is V
OUT
≈ V -V .
IN IN(T+)
Due to V
GND
> 0, no V = low signal available.
ST
Semiconductor Group
9
2003-Oct-01
Data Sheet
10
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Inductive load switch-off energy
dissipation
ꢃꢃ
ꢋ
ꢋ
:ꢇ
ꢋ
ꢏꢐꢖꢝ
ꢂ
ꢃꢃ
ꢄꢅ
ꢍꢎꢈ
ꢀꢁꢂꢃꢄꢅ
ꢏ
ꢓ
ꢇꢈ
ꢋ
ꢏ
%ꢅꢌ
4
ꢏ
ꢀ
ꢋ
#
#
ꢏ
Energy stored in load inductance:
2
L
1
E =
L
/
·L·I
2
While demagnetizing load inductance, the energy
dissipated in PROFET is
E = Ebb + EL - ER=
AS
V
·i (t) dt,
ON(CL) L
with an approximate solution for R > 0Ω:
L
I ·L
L
I ·R
L L
OUT(CL)
E =
AS
(V
+|V |) ꢀꢁꢂ(1+
OUT(CL)
)
bb
2·R
|V
|
L
Maximum allowable load inductance for
5)
a single switch off (one channel)
ꢀꢁꢂꢁꢃꢁꢄꢅ ꢆꢇꢁT
= 150°C, V = 12 V, R = 0 Ω
ꢀꢁ
j,start
bb
L
L [mH]
ꢆ....
ꢆ...
ꢆ..
ꢆ.
ꢆ
ꢆ
ꢊ
'
(
)
/
*
+
I
[A]
L
Data Sheet
11
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Typ. standby current
Typ. on-state resistance
; V = 9...34 V, IN
1...4
= low
bb
; I = 2 A, IN = high
L
I
[µA]
bb(off)
R
[mOhm]
ON
T [°C]
j
V
bb
[V]
Typ. initial short circuit shutdown time
Typ. open load detection current
; V =12 V
bb
IN = high
I
[mA]
L(OL)
toff(S C) [msec]
16
14
12
10
8
6
4
2
0
-40
-25
0
25
50
75
100
125
15
Tj, s tart
V
bb
[V]
Data Sheet
12
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Timing diagrams
Timing diagrams are shown for chip 1 (channel 1/2). For chip 2 (channel 3/4) the diagrams
are valid too. The channels 1 and 2, respectively 3 and 4, are symmetric and consequently
the diagrams are valid for each channel as well as for permuted channels
Figure 1a: V turn on:
Figure 2b: Switching an inductive load
bb
ꢄꢅꢆ
ꢄꢅ
ꢄꢅꢊ
ꢕ
ꢝ0ꢇꢈ2
ꢂ
ꢃꢃ
ꢇꢈ
;2
ꢂ
ꢍꢎꢈꢆ
ꢂ
ꢍꢎꢈ
ꢂ
ꢍꢎꢈꢊ
ꢄ
ꢏ
ꢄ
ꢏ0ꢍꢏ2
ꢇꢈꢀꢐꢜꢗꢙꢀꢝꢚꢖꢒꢙ
ꢕ
ꢕ
*) if the time constant of load is too large, open-load-status may
occur
Figure 2a: Switching a lamp:
Figure 3a: Turn on into short circuit:
shut down by overtemperature, restart by cooling
ꢄꢅ
ꢄꢅꢆ
ꢐꢕꢞꢗꢚꢀꢓꢞꢖꢙꢙꢗꢔ<ꢀꢙꢐꢚ"ꢖꢔꢀꢐꢜꢗꢚꢖꢕꢒꢐꢙ
ꢇꢈ
ꢄ
ꢏꢆ
ꢂ
ꢍꢎꢈ
ꢄ
ꢏ0ꢇ&ꢜ2
ꢄ
ꢏ0ꢇ&ꢚ2
ꢄ
ꢏ
ꢕ
ꢐ!!0ꢇ&2
ꢇꢈ
ꢕ
ꢕ
The initial peak current should be limited by the lamp and not by
the initial short circuit current IL(SCp) = 14 A typ. of the device.
Heating up of the chip may require several milliseconds, depending
on external conditions (t
vs. T
see page 12)
off(SC)
j,start
Data Sheet
13
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Figure 3b: Turn on into short circuit:
Figure 5a: Open load: detection in ON-state, open
shut down by overtemperature, restart by cooling
(two parallel switched channels 1 and 2)
load occurs in on-state
ꢄꢅꢆ
ꢄꢅꢆꢉꢊ
ꢄꢅꢊꢀꢀꢀꢀꢀꢀꢀꢀꢓꢞꢖꢙꢙꢗꢔꢀꢊ<ꢀꢙꢐꢚ"ꢖꢔꢀꢐꢜꢗꢚꢖꢕꢒꢐꢙ
ꢄꢀꢀꢀꢀꢁꢀꢄ
ꢏꢆꢀꢀꢀꢀꢀꢀꢀꢀꢏꢊ
ꢄ
ꢏ0ꢇ&ꢜ2
ꢂ
ꢍꢎꢈꢆ
ꢄ
ꢏ0ꢇ&ꢚ2
ꢓꢞꢖꢙꢙꢗꢔꢀꢆ<
ꢄ
ꢏꢆ
ꢐꢜꢗꢙ
ꢔꢐꢖꢝ
ꢐꢜꢗꢙ
ꢔꢐꢖꢝ
ꢙꢐꢚ"ꢖꢔ
ꢔꢐꢖꢝ
ꢕ
ꢐ!!0ꢇ&2
ꢕ
ꢕ
ꢝ0ꢇꢈꢀꢍꢏꢆ2
ꢕ
ꢇꢈꢆꢉꢊ
ꢕ
ꢝ0ꢇꢈꢀꢍꢏꢆ2
ꢝ0ꢇꢈꢀꢍꢏꢊ2
ꢝ0ꢇꢈꢀꢍꢏꢊ2
ꢇꢈ
ꢕ
ꢕ
td(ST OL1) = 30 µs typ., td(ST OL2) = 20 µs typ
Figure 5b: Open load: detection in ON-state, turn
on/off to open load
Figure 4a: Overtemperature:
Reset if T <T
j
jt
ꢄꢅꢆ
ꢄꢅ
IN2
channel 2: normal operation
ꢇꢈ
ꢂ
ꢍꢎꢈꢆ
ꢂ
ꢍꢎꢈ
ꢄ
ꢏꢆ
channel 1: open load
ꢈ
=
ꢕ
ꢕ
t
ꢕ
ꢝ0ꢇꢈ2
ꢝ0ꢇꢈꢀꢍꢏ(2
ꢝ0ꢇꢈ2
ꢝ0ꢇꢈꢀꢍꢏ)2
ꢕ
ꢇꢈ
ꢕ
The status delay time td(STOL4) allows to distinguish between the
failure modes "open load in ON-state" and "overtemperature".
Data Sheet
14
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Figure 5c: Open load: detection in ON- and OFF-state
Figure 6b: Undervoltage restart of charge pump
(with R
), turn on/off to open load
EXT
ꢂꢍꢅ0&ꢏ2
ꢂꢐꢙ
ꢄꢅꢆ
IN2
channel 2: normal operation
ꢂ
ꢍꢎꢈꢆ
ꢂ
ꢃꢃ0ꢐ ꢗꢚ2
ꢄꢏꢆ
ꢂ
ꢂ
ꢓꢞꢖꢙꢙꢗꢔꢀꢆ<ꢀꢐꢜꢗꢙꢀꢔꢐꢖꢝ
ꢃꢃ0ꢐꢀꢚꢘꢕ2
ꢃꢃ0ꢛꢀꢚꢘꢕ2
ꢂ
ꢃꢃ0ꢛꢀꢓꢜ2
ꢂ
ꢕ
ꢇꢈ
ꢕ ꢝ0ꢇꢈꢀꢍꢏ)2
ꢃꢃ0ꢛꢙꢝꢗꢚ2
ꢕd(ST)
ꢝ0ꢇꢈ2
ꢂꢃꢃ
bb(o rst)
ꢕ
ꢕ
IN = high, normal load conditions.
Charge pump starts at Vbb(ucp) = 5.6V typ.
td(ST OL5) depends on external circuitry because of high
impedance
Figure 7a: Overvoltage:
Figure 6a: Undervoltage:
ꢄꢅ
ꢄꢅ
VON(CL)
V
V
ꢂ
bb(over)
bb
ꢂ
ꢃꢃ
V
V
bb(u cp)
bb(under)
ꢂ
bb(u rst)
ꢂ
ꢍꢎꢈ
ꢂ ꢍꢎꢈ
ꢇꢈ
ꢇꢈꢀꢐꢜꢗꢙꢀꢝꢚꢖꢒꢙ
ꢕ
Data Sheet
15
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Package Outlines
0.35 x 45˚
1)
7.6 -0.2
+0.09
0.23
8˚ max
0.4 +0.8
1.27
0.35 +0.152)
10.3 ±0.3
0.1
0.2 24x
11
20
1
GPS05094
10
1)
12.8-0.2
Index Marking
1) Does not include plastic or metal protrusions of 0.15 max per side
2) Does not include dambar protrusion of 0.05 max per side
Figure 1
PG-DSO-20 (Plastic Dual Small Outline Package) (RoHS-compliant)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant with
government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-
free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
Please specify the package needed (e.g. green package) when placing an order
You can find all of our packages, sorts of packing and others in our
Infineon Internet Page “Products”: http://www.infineon.com/products.
Dimensions in mm
Data Sheet
16
Rev. 1.3, 2010-03-16
Smart High-Side Power Switch
BTS721L1
Revision History
Version
Rev. 1.3
Rev. 1.2
Date
2010-03-16
2009-07-21
Changes
page 6: changed reference to the timing diagram
page 1: added new coverpage
page 6: Initial short circuit shutdown time changed:
toff(SC) -40 °C to 15 ms
toff(SC) 25 °C to 12 ms
page 12: changed graphic
V1.1
2007-08-30
Creation of the green datasheet.
First page :
Adding the green logo and the AEC qualified
Adding the bullet AEC qualified and the RoHS compliant features
Package page
Modification of the package to be green.
Data Sheet
17
Rev. 1.3, 2010-03-16
Edition 2010-03-16
Published by
Infineon Technologies AG
81726 Munich, Germany
© Infineon Technologies AG 3/16/10.
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee of conditions or
characteristics (“Beschaffenheitsgarantie”). With respect to any examples or hints given herein, any typical values
stated herein and/or any information regarding the application of the device, Infineon Technologies hereby
disclaims any and all warranties and liabilities of any kind, including without limitation warranties of
non-infringement of intellectual property rights of any third party.
Information
For further information on technology, delivery terms and conditions and prices please contact your nearest
Infineon Technologies Office (www.infineon.com).
Warnings
Due to technical requirements components may contain dangerous substances. For information on the types in
question please contact your nearest Infineon Technologies Office.
Infineon Technologies Components may only be used in life-support devices or systems with the express written
approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure
of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support
devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.
相关型号:
BTS723GW
Smart High-Side Power Switch Two Channels: 2 x 100mз Status Feedback Suitable for 42V
INFINEON
BTS723GWXT
Buffer/Inverter Based Peripheral Driver, 9A, MOS, PDSO14, GREEN, PLASTIC, SOP-14
INFINEON
BTS723GWXUMA1
Buffer/Inverter Based Peripheral Driver, 4.2A, PDSO14, GREEN, PLASTIC, SOP-14
INFINEON
BTS725L1
Smart Two Channel Highside Power Switch (Overload protection Current limitation Short-circuit protection Thermal shutdown)
INFINEON
©2020 ICPDF网 联系我们和版权申明