T6818 [ATMEL]

Triple Halfbridge DMOS OUTPUT DRIVER WITH SERIAL INPUT CONTROL; 带串行输入控制三重半桥DMOS输出驱动器
T6818
型号: T6818
厂家: ATMEL    ATMEL
描述:

Triple Halfbridge DMOS OUTPUT DRIVER WITH SERIAL INPUT CONTROL
带串行输入控制三重半桥DMOS输出驱动器

驱动器 输出元件 输入元件
文件: 总16页 (文件大小:473K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
Features  
Supply Voltage up to 40 V  
RDSon Typically 0.5 at 25°C, Maximum 1 at 150°C  
Up to 1.5 A Output Current  
Three Half-bridge Outputs Formed by Three High-side and Three Low-side Drivers  
Capable to Switch all Kinds of Loads Such as DC Motors, Bulbs, Resistors, Capacitors  
and Inductors  
No Shoot-through Current  
Very Low Quiescent Current IS < 5 µA in Standby Mode versus Total Temperature  
Range  
Outputs Short-circuit Protected  
Overtemperature Protection for Each Switch and Overtemperature Prewarning  
Undervoltage Protection  
Triple Half-  
bridge DMOS  
Output Driver  
with Serial Input  
Control  
Various Diagnostic Functions Such as Shorted Output, Open-load, Overtemperature  
and Power-supply Fail Detection  
Serial Data Interface, Daisy Chain Capable, up to 2 MHz Clock Frequency  
SO14 Power Package  
Description  
The T6818/T6828 are fully protected driver interfaces designed in 0.8-µm BCDMOS  
technology. They are used to control up to 3 different loads by a microcontroller in  
automotive and industrial applications.  
T6818/T6828  
Each of the 3 high-side and 3 low-side drivers is capable to drive currents up to 1.5 A.  
The drivers are internally connected to form 3 half-bridges and can be controlled sep-  
arately from a standard serial data interface. Therefore, all kinds of loads such as  
bulbs, resistors, capacitors and inductors can be combined. The IC design especially  
supports the application of H-bridges to drive DC motors.  
Protection is guaranteed regarding short-circuit conditions, overtemperature and und-  
ervoltage. Various diagnostic functions and a very low quiescent current in  
stand-by-mode opens a wide range of applications. Automotive qualification (protec-  
tion against conducted interferences, EMC protection and 2-kV ESD protection) gives  
added value and enhanced quality for exacting requirements of automotive  
applications.  
Rev. 4530C–BCD–11/03  
Figure 1. Block Diagram  
O
C
S
H
S
3
L
S
3
H
S
2
L
S
2
H
S
1
L
S
1
S
R
R
n. n.  
u. u.  
n. n. n. n. n. n.  
u. u. u. u. u. u.  
3
VS  
Input register  
Output register  
Serial interface  
Charge  
pump  
n. n. n. n. n. n.  
u. u. u. u. u. u.  
DI  
5
P
S
F
S
C
D
H
S
3
L
S
3
H
S
2
L
S
2
H
S
1
L
S
1
T
P
O
P
L
CLK  
6
CS  
4
UV  
protection  
Fault  
Fault  
Fault  
detect  
detect  
detect  
11  
1
INH  
10  
VCC  
Control  
logic  
Power-on  
reset  
DO  
9
GND  
GND  
GND  
GND  
7
8
Fault  
Fault  
Fault  
detect  
detect  
detect  
Thermal  
protection  
14  
2
12  
OUT2  
13  
OUT1  
OUT3  
2
T6818/T6828  
4530C–BCD–11/03  
T6818/T6828  
Pin Configuration  
Figure 2. Pining SO14  
GND  
OUT3  
VS  
1
2
3
4
5
6
7
14 GND  
13 OUT1  
12 OUT2  
11 VCC  
10 INH  
CS  
DI  
CLK  
GND  
9
8
DO  
GND  
Pin Description  
Pin  
Symbol  
Function  
T6818: ground; reference potential; internal connection to pin 7, 8 and 14; cooling tab  
T6828: additional connection to heat slug  
1
GND  
Half-bridge output 3; formed by internally connected power MOS high-side switch 3 and low-side switch 3  
with internal reverse diodes; short circuit protection; overtemperature protection; diagnosis for short and  
open load  
2
OUT3  
3
4
VS  
CS  
Power supply for output stages OUT1, OUT2 and OUT3, internal supply  
Chip select input; 5-V CMOS logic level input with internal pull up;  
low = serial communication is enabled, high = disabled  
Serial data input; 5-V CMOS logic level input with internal pull down; receives serial data from the control  
device; DI expects a 16-bit control word with LSB being transferred first  
5
6
DI  
Serial clock input; 5-V CMOS logic level input with internal pull down;  
controls serial data input interface and internal shift register (fmax = 2 MHz)  
CLK  
7
8
GND  
GND  
Ground; see pin 1  
Ground; see pin 1  
Serial data output; 5-V CMOS logic level tristate output for output (status) register data; sends 16-bit  
status information to the microcontroller (LSB is transferred first); output will remain tristated unless  
device is selected by CS = low, therefore, several ICs can operate on one data output line only.  
9
DO  
Inhibit input; 5-V logic input with internal pull down; low = standby,  
high = normal operation  
10  
INH  
11  
12  
13  
14  
VCC  
OUT2  
OUT1  
GND  
Logic supply voltage (5 V)  
Half-bridge output 2; see pin 2  
Half-bridge output 1; see pin 2  
Ground; see pin 1  
3
4530C–BCD–11/03  
Functional Description  
Serial Interface  
Data transfer starts with the falling edge of the CS signal. Data must appear at DI syn-  
chronized to CLK and are accepted on the falling edge of the CLK signal. LSB (bit 0,  
SRR) has to be transferred first. Execution of new input data is enabled on the rising  
edge of the CS signal. When CS is high, pin DO is in tristate condition. This output is  
enabled on the falling edge of CS. Output data will change their state with the rising  
edge of CLK and stay stable until the next rising edge of CLK appears. LSB (bit 0, TP) is  
transferred first.  
Figure 3. Data Transfer  
CS  
DI  
SRR  
LS1  
HS1  
LS2  
HS2  
LS3  
HS3  
n. u.  
n. u.  
n. u.  
n. u.  
n. u.  
n. u.  
n. u.  
n. u.  
OCS  
0
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
CLK  
DO  
TP  
S1L  
S1H  
S2L  
S2H  
S3L  
S3H  
n. u.  
n. u.  
n. u.  
n. u.  
n. u.  
n. u.  
SCD  
OPL  
PSF  
Table 1. Input Data Protocol  
Bit  
Input Register  
Function  
Status register reset (high = reset; the bits PSF, OPL and SCD in  
the output data register are set to low)  
0
SRR  
1
2
LS1  
HS1  
LS2  
HS2  
LS3  
HS3  
n. u.  
n. u.  
n. u.  
n. u.  
n. u.  
n. u.  
OCS  
n. u.  
n. u.  
Controls output LS1 (high = switch output LS1 on)  
Controls output HS1 (high = switch output HS1 on)  
3
See LS1  
4
See HS1  
5
See LS1  
6
See HS1  
7
Not used  
8
Not used  
9
Not used  
10  
11  
12  
13  
14  
15  
Not used  
Not used  
Not used  
Overcurrent shutdown (high = overcurrent shutdown is active)  
Not used  
Not used  
4
T6818/T6828  
4530C–BCD–11/03  
T6818/T6828  
Table 2. Output Data Protocol  
Output (Status)  
Bit  
0
Register  
Function  
TP  
Temperature prewarning: high = warning  
1
Status LS1  
Status HS1  
Status LS2  
Status HS2  
Status LS3  
Status HS3  
n. u.  
High = output is on, low = output is off; not affected by SRR  
2
High = output is on, low = output is off; not affected by SRR  
3
Description see LS1  
Description see HS1  
Description see LS1  
Description see HS1  
Not used  
4
5
6
7
8
n. u.  
Not used  
9
n. u.  
Not used  
10  
11  
12  
n. u.  
Not used  
n. u.  
Not used  
n. u.  
Not used  
Short circuit detected: set high when at least one high-side or low-  
side switch is switched off by a short-circuit condition. Bits 1 to 6  
can be used to detect the shorted switch.  
13  
SCD  
Open load detected: set high, when at least one active high-side-  
or low-side switch sinks/sources a current below the open load  
threshold current.  
14  
15  
OPL  
PSF  
Power-supply fail: undervoltage at pin VS detected  
After power-on reset, the input register has the following status:  
Bit 15 Bit 14  
Bit 13  
(OCS)  
Bit 12  
Bit 11  
Bit 10  
Bit 9  
Bit 8  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
(HS3)  
(LS3)  
(HS2)  
(LS2)  
(HS1) (LS1)  
(SRR)  
x
x
H
x
x
x
x
x
x
L
L
L
L
L
L
L
The following patterns are used to enable internal test modes of the IC. It is not recommended to use these patterns during  
normal operation.  
Bit 15 Bit 14  
Bit 13  
(OCS)  
Bit 12  
Bit 11  
Bit 10  
Bit 9  
Bit 8  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
(HS3)  
(LS3)  
(HS2)  
(LS2)  
(HS1) (LS1)  
(SRR)  
H
H
H
H
H
H
H
H
H
H
L
L
H
L
L
L
H
L
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
5
4530C–BCD–11/03  
Power-supply Fail  
In case of undervoltage at pin VS, the Power-Supply Fail bit (PSF) in the output register  
is set and all outputs are disabled. To detect an undervoltage, its duration has to last  
longer than the undervoltage detection delay time tdUV. The outputs are enabled immedi-  
ately when supply voltage recovers normal operation value. The PSF bit stays high until  
it is reset by the SRR bit in the input register.  
Open-load Detection  
If the current through a high-side or low-side switch in ON-state stays below the open-  
load detection threshold, the open-load detection bit (OPL) in the output register is set.  
The OPL bit stays high until it is reset by the SRR bit in the input register. To detect an  
open load, its duration has to last longer than the open-load detection delay time tdSd  
.
Overtemperature  
Protection  
If the junction temperature of one or more output stages exceeds the thermal prewarn-  
ing threshold, TjPW set, the temperature prewarning bit (TP) in the output register is set.  
When the temperature falls below the thermal prewarning threshold, TjPW reset, the bit TP  
is reset. The TP bit can be read without transferring a complete 16-bit data word. The  
status of TP is available at pin DO with the falling edge of CS. After the microcontroller  
has read this information, CS is set high and the data transfer is interrupted without  
affecting the status of input and output registers.  
If the junction temperature of one or more output stages exceeds the thermal shutdown  
threshold, Tj switch off, all outputs are disabled and the corresponding bits in the output  
register are set to low. The outputs can be enabled again when the temperature falls  
below the thermal shutdown threshold, Tjswitchon and the SRR bit in the input register is  
set to high. Hysteresis of thermal prewarning and shutdown threshold avoids  
oscillations.  
Short-circuit Protection  
The output currents are limited by a current regulator. Overcurrent detection is activated  
by writing a high to the OCS bit in the input register. When the current in an output stage  
exceeds the overcurrent limitation and shutdown theshold, it is switched off after a delay  
time (tdSd). The short-circuit detection bit (SCD) is set and the corresponding status bit in  
the output register is set to low. For OCS = low the overcurrent shutdown is inactive.  
The SCD bit is also set if the current exceeds the overcurrent limitation and shutdown  
threshold, but the outputs are not affected. By writing a high to the SRR bit in the input  
register the SCD bit is reset and the disabled outputs are enabled.  
Inhibit  
0 V applied to pin 10 (INH) inhibits the T6818/T6828.  
All output switches are then turned off and switched to tristate. The data in the output  
register are deleted. The current consumption is reduced to less than 5 µA at pin VS and  
less than 25 µA at pin VCC. The output switches can be activated again by switching pin  
10 (INH) to 5 V which initiates an internal power-on reset.  
6
T6818/T6828  
4530C–BCD–11/03  
T6818/T6828  
Absolute Maximum Ratings  
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating  
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this  
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.  
All values refer to GND pins.  
Parameters  
Pin  
Symbol  
Value  
Unit  
Supply voltage  
3
VVS  
-0.3 to +40  
V
Supply voltage  
t < 0.5 s; IS > -2 A  
3
VVS  
-1  
V
Logic supply voltage  
Logic input voltage  
Logic output voltage  
Input current  
11  
4 to 6, 10  
9
VVCC  
VCS,VDI, VCLK, VINH  
VDO  
-0.3 to +7  
-0.3 to VVCC+0.3  
V
V
-0.3 to VVCC+0.3  
V
4 to 6, 10  
9
ICS,IDI, ICLK, IINH  
IDO  
IOut3, IOut2, IOut1  
IOut3, IOut2, IOut1  
-10 to +10  
mA  
mA  
Output current  
-10 to +10  
Output current  
2, 12 and 13  
2, 12 and 13  
Internally limited, see output specification  
-0.3 to +40  
Output voltage  
V
A
Reverse conducting current  
(tpulse = 150 µs)  
2, 12 and 13  
towards pin 3  
IOut3, IOut2, IOut1  
17  
Junction temperature range  
Storage temperature range  
TJ  
-40 to +150  
-55 to +150  
LC  
LC  
TSTG  
Thermal Resistance  
Parameters  
Test Conditions  
Symbol  
Value  
Unit  
T6818  
Measured to GND  
Pins 1, 7, 8 and 14  
Junction pin  
RthJP  
RthJA  
30  
65  
K/W  
K/W  
Junction ambient  
T6828  
Measured to heat slug  
GND pins 1, 7, 8 and 14  
Junction pin  
RthJP  
RthJA  
5
K/W  
K/W  
Junction ambient  
30  
Operating Range  
Parameters  
Symbol  
Value  
VUV(1) to 40  
4.75 to 5.25  
-0.3 to VVCC  
2
Unit  
V
Supply voltage  
VVS  
Logic supply voltage  
Logic input voltage  
VVCC  
V
VCS,VDI, VCLK, VINH  
V
Serial interface clock frequency  
Junction temperature range  
fCLK  
Tj  
MHz  
LC  
-40 to +150  
Note:  
1. Threshold for undervoltage detection  
7
4530C–BCD–11/03  
Noise and Surge Immunity  
Parameters  
Test Conditions  
ISO 7637-1  
Value  
Level 4(1)  
Level 5  
2 kV  
Conducted interferences  
Interference suppression  
ESD (Human Body Model)  
ESD (Machine Model)  
VDE 0879 Part 2  
ESD S 5.1  
JEDEC A115A  
200 V  
Note:  
1. Test pulse 5: Vsmax = 40 V  
Electrical Characteristics  
7.5 V < VVS < 40 V; 4.75 V < VVCC < 5.25 V; INH = High; -40LC < Tj < 150LC; unless otherwise specified, all values refer to GND pins.  
No. Parameters  
Test Conditions  
Pin  
Symbol  
Min.  
Typ.  
Max.  
Unit  
Type*  
1
Current Consumption  
1.1  
Quiescent current VS  
VVS < 20 V, INH = low  
3
IVS  
1
5
µA  
µA  
A
A
4.75 V < VVCC < 5.25 V,  
INH = low  
1.2  
1.3  
1.4  
Quiescent current VCC  
11  
IVCC  
15  
25  
VVS <20 V normal  
operating, all outputs off  
Supply current VS  
3
11  
3
IVS  
IVCC  
IVS  
4
6
mA  
µA  
A
A
A
A
4.75 V < VVCC < 5.25 V,  
normal operating  
Supply current VCC  
Discharge current VS  
Discharge current VS  
350  
500  
5.5  
10  
VVS = 32.5 V,  
INH = low  
1.5  
0.5  
2.5  
mA  
mA  
VVS = 40 V,  
INH = low  
1.6  
2
3
IVS  
Undervoltage Detection, Power-on Reset  
Power-on reset  
threshold  
2.1  
11  
VVCC  
tdPor  
VUv  
3.2  
30  
3.9  
95  
4.4  
190  
7.0  
V
µs  
V
A
A
A
A
A
Power-on reset  
After switching on VCC  
delay time  
2.2  
2.3  
2.4  
2.5  
Undervoltage-detection  
VCC = 5 V  
3
3
5.6  
threshold  
Undervoltage-detection  
VCC = 5 V  
VUv  
tdUV  
0.6  
V
hysteresis  
Undervoltage-detection  
delay time  
10  
40  
µs  
3
Thermal Prewarning and Shutdown  
3.1  
Thermal prewarning set  
TjPW set  
120  
105  
145  
130  
170  
155  
LC  
LC  
B
B
Thermal prewarning  
reset  
3.2  
3.3  
TjPW reset  
Thermal prewarning  
hysteresis  
TjPW  
15  
LC  
B
3.4  
3.5  
Thermal shutdown off  
Thermal shutdown on  
Tj switch off  
Tj switch on  
150  
135  
175  
160  
200  
185  
LC  
LC  
B
B
*) Type means: A =100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter  
Note:  
1. Delay time between rising edge of input signal at pin CS after data transmission and switch on output stages to 90% of final  
level. Device not in standby for t > 1 ms  
8
T6818/T6828  
4530C–BCD–11/03  
T6818/T6828  
Electrical Characteristics (Continued)  
7.5 V < VVS < 40 V; 4.75 V < VVCC < 5.25 V; INH = High; -40LC < Tj < 150LC; unless otherwise specified, all values refer to GND pins.  
No. Parameters  
Test Conditions  
Pin  
Symbol  
Min.  
Typ.  
Max.  
Unit  
Type*  
Thermal shutdown  
hysteresis  
3.6  
Tj switch off  
15  
LC  
B
Ratio thermal shutdown  
off/thermal prewarning  
set  
Tj switch off/  
TjPW set  
3.7  
1.05  
1.05  
1.2  
1.2  
B
B
Ratio thermal shutdown  
on/thermal prewarning  
reset  
Tj switch on/  
TjPW reset  
3.8  
4
Output Specification (OUT1-OUT3)  
2, 12,  
13  
4.1  
IOut 1-3 = -1.3 A  
On resistance  
RDS On1-3  
RDS On1-3  
IOut 1-3  
1.1  
1.1  
A
A
A
2, 12,  
13  
4.2  
4.3  
4.4  
IOut 1-3 = 1.3 A  
VOut 1-3 = 0 V  
High-side output  
leakage current  
2, 12,  
13  
,
-15  
µA  
output stages off  
VOut 1-3 = VVS,  
Low-side output  
leakage current  
2, 12,  
13  
IOut 1-3  
VOut 1-3 - VVS  
VOut 1-3  
200  
1.5  
µA  
V
A
A
A
A
output stages off  
High-side switch  
reverse diode forward IOut 1-3 = 1.5 A  
voltage  
2, 12,  
13  
4.5  
4.6  
4.7  
Low-side switch reverse  
IOut 1-3 = -1.5 A  
2, 12,  
13  
-1.5  
-2.5  
V
diode forward voltage  
High-side overcurrent  
limitation and shutdown  
threshold  
2, 12,  
13  
IOut 1-3  
-2  
2
-1.5  
2.5  
A
Low-side overcurrent  
limitation and shutdown  
threshold  
2, 12,  
13  
4.8  
IOut 1-3  
1.5  
A
A
Overcurrent shutdown  
delay time  
4.9  
tdSd  
IOut1-3  
IOut1-3  
tdSd  
10  
-45  
15  
40  
-15  
45  
µs  
mA  
mA  
µs  
A
A
A
A
A
A
A
High-side open-load  
detection threshold  
2, 12,  
13  
4.10  
4.11  
4.12  
4.13  
4.14  
4.15  
-30  
30  
Low-side open-load  
detection threshold  
2, 12,  
13  
Open-load detection  
delay time  
200  
600  
20  
High-side output switch VVS = 13 V  
tdon  
µs  
on delay(1)  
RLoad = 30 ꢁ  
Low-side output switch VVS = 13 V  
on delay(1)  
Load = 30 ꢁ  
High-side output switch VVS = 13 V  
off delay(1)  
RLoad = 30 ꢁ  
tdon  
20  
µs  
R
tdoff  
20  
µs  
*) Type means: A =100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter  
Note:  
1. Delay time between rising edge of input signal at pin CS after data transmission and switch on output stages to 90% of final  
level. Device not in standby for t > 1 ms  
9
4530C–BCD–11/03  
Electrical Characteristics (Continued)  
7.5 V < VVS < 40 V; 4.75 V < VVCC < 5.25 V; INH = High; -40LC < Tj < 150LC; unless otherwise specified, all values refer to GND pins.  
No. Parameters  
Test Conditions  
Pin  
Symbol  
Min.  
Typ.  
Max.  
Unit  
Type*  
Low-side output switch VVS = 13 V  
4.16  
tdoff  
3
µs  
A
off delay(1)  
RLoad = 30 ꢁ  
Dead time between  
4.17 corresponding high-  
and low-side switches  
VVS = 13 V  
tdon - tdoff  
1
µs  
A
RLoad = 30 ꢁ  
5
Logic Inputs DI, CLK, CS, INH  
Input voltage low-level  
threshold  
0.3 Pꢂ  
VVCC  
5.1  
4-6, 10  
4-6, 10  
4-6, 10  
5, 6, 10  
4
VIL  
VIH  
VI  
IPD  
IPU  
V
V
A
A
B
A
A
Input voltage high-level  
threshold  
0.7ꢂPꢂ  
VVCC  
5.2  
5.3  
5.4  
5.5  
Hysteresis of input  
voltage  
50  
10  
700  
65  
mV  
µA  
µA  
Pull-down current pin  
DI, CLK, INH  
VDI, VCLK, VINH = VCC  
VCS = 0 V  
Pull-up current  
Pin CS  
-65  
-10  
6
Serial Interface – Logic Output DO  
6.1  
Output-voltage low level IDOL = 2 mA  
9
9
VDOL  
VDOH  
0.4  
10  
V
V
A
A
Output-voltage high  
IDOL = -2 mA  
level  
VVCC -  
0.7 V  
6.2  
VCS = VCC  
Leakage current  
(tristate)  
6.3  
9
IDO  
-10  
µA  
A
0V < VDO < VVCC  
7
Inhibit Input - Timing  
Delay time from  
standby to normal  
operation  
7.1  
tdINH  
100  
µs  
A
*) Type means: A =100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter  
Note:  
1. Delay time between rising edge of input signal at pin CS after data transmission and switch on output stages to 90% of final  
level. Device not in standby for t > 1 ms  
10  
T6818/T6828  
4530C–BCD–11/03  
T6818/T6828  
Serial Interface – Timing  
No.  
Parameters  
Test Conditions  
Pin  
Timing Chart No.(1)  
Symbol  
Min.  
Typ.  
Max.  
Unit  
Type*  
DO enable after  
CS falling edge  
8.1  
CDO = 100 pF  
9
1
tENDO  
200  
ns  
D
DO disable after  
CS rising edge  
8.2  
CDO = 100 pF  
9
2
tDISDO  
200  
ns  
D
8.3  
8.4  
8.5  
8.6  
8.7  
8.8  
8.9  
DO fall time  
CDO = 100 pF  
CDO = 100 pF  
CDO = 100 pF  
9
9
9
4
4
4
6
6
6
6
6
5
5
-
-
tDOf  
tDOr  
100  
100  
200  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
D
D
D
D
D
D
D
D
D
D
D
D
D
DO rise time  
DO valid time  
CS setup time  
CS setup time  
CS high time  
CLK high time  
10  
4
tDOVal  
tCSSethl  
tCSSetlh  
tCSh  
225  
225  
500  
225  
225  
500  
225  
225  
40  
8
9
5
tCLKh  
8.10 CLK low time  
8.11 CLK period time  
8.12 CLK setup time  
8.13 CLK setup time  
8.14 DI setup time  
8.15 DI hold time  
6
tCLKl  
-
tCLKp  
7
tCLKSethl  
tCLKSetlh  
tDIset  
3
11  
12  
tDIHold  
40  
*) Type means: A =100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter  
Note: 1. See Figure 4 on page 12  
11  
4530C–BCD–11/03  
Figure 4. Serial Interface Timing with Chart Numbers  
1
2
CS  
DO  
9
CS  
4
7
CLK  
5
3
6
8
DI  
11  
CLK  
10  
12  
DO  
Inputs DI, CLK, CS: High level = 0.7 × VCC, low level = 0.3 × VCC  
Output DO: High level = 0.8 × VCC, low level = 0.2 × VCC  
12  
T6818/T6828  
4530C–BCD–11/03  
T6818/T6828  
Application Circuit  
VCC  
U5021M  
Enable  
Watchdog  
VS  
O
C
S
H
S
3
L
S
3
H
S
2
L
S
2
H
S
1
L
S
1
S
R
R
BYT41D  
3
VS  
n. n.  
u. u.  
n. n. n. n. n. n.  
u. u. u. u. u. u.  
VBatt  
+
Input register  
Output register  
13 V  
Serial interface  
Charge  
pump  
n. n. n. n. n. n.  
u. u. u. u. u. u.  
DI  
P
S
F
S
C
D
H
S
3
L
S
3
H
S
2
L
S
2
H
S
1
L
S
1
O
P
L
T
P
5
6
CLK  
CS  
VCC  
UV  
4
Fault  
detect  
Fault  
detect  
Fault  
detect  
protection  
VCC  
11  
INH  
VCC  
10  
Control  
logic  
5 V  
+
Power-on  
reset  
DO  
1
GND  
9
7
GND  
Fault  
detect  
Fault  
detect  
Fault  
detect  
8
Thermal  
GND  
protection  
14  
GND  
2
12  
OUT2  
13  
OUT1  
OUT3  
VCC  
M
M
Application Notes  
It is strongly recommended to connect the blocking capacitors at VCC and VS as close as  
possible to the power supply and GND pins.  
Recommended value for capacitors at VS:  
Electrolytic capacitor C > 22 µF in parallel with a ceramic capacitor C = 100 nF. Value  
for electrolytic capacitor depends on external loads, conducted interferences and  
reverse conducting current IOut1,2,3 (see “Absolute Maximum Ratings” on page 7).  
Recommended value for capacitors at VCC  
:
Electrolytic capacitor C > 10 µF in parallel with a ceramic capacitor C = 100 nF.  
To reduce thermal resistance it is recommended to place cooling areas on the PCB as  
close as possible to the GND pins.  
Negative spikes at the output pins (e.g. negative spikes caused by an inductive load  
switched off with a high side driver) may activate the overtemperature protection func-  
tion of the T6818/T6828. In this condition, all outputs will be switched off simultaneously.  
If this behavior is not acceptable or compatible with your application functionally, it is  
necessary, that for switching on required outputs again, the SRR bit (Status Register  
Reset) is set, to ensure a reset of the overtemperature function.  
13  
4530C–BCD–11/03  
Ordering Information  
Extended Type Number  
Package  
SO14  
Remarks  
T6818-TUS  
Power package, tubed  
T6818-TUQ  
SO14  
Power package, taped and reeled  
Power package with heat slug, tubed  
Power package with heat slug, taped and reeled  
T6828-TUS  
SO14  
T6828-TUQ  
SO14  
Package Information  
5.2  
4.8  
Package SO14  
Dimensions in mm  
8.75  
7.62  
3.7  
1.4  
0.25  
0.2  
0.4  
3.8  
0.10  
1.27  
6.15  
5.85  
14  
8
technical drawings  
according to DIN  
specifications  
1
7
14  
T6818/T6828  
4530C–BCD–11/03  
T6818/T6828  
15  
4530C–BCD–11/03  
Atmel Corporation  
Atmel Operations  
2325 Orchard Parkway  
San Jose, CA 95131, USA  
Tel: 1(408) 441-0311  
Fax: 1(408) 487-2600  
Memory  
RF/Automotive  
Theresienstrasse 2  
Postfach 3535  
74025 Heilbronn, Germany  
Tel: (49) 71-31-67-0  
Fax: (49) 71-31-67-2340  
2325 Orchard Parkway  
San Jose, CA 95131, USA  
Tel: 1(408) 441-0311  
Fax: 1(408) 436-4314  
Regional Headquarters  
Microcontrollers  
2325 Orchard Parkway  
San Jose, CA 95131, USA  
Tel: 1(408) 441-0311  
Fax: 1(408) 436-4314  
1150 East Cheyenne Mtn. Blvd.  
Colorado Springs, CO 80906, USA  
Tel: 1(719) 576-3300  
Europe  
Atmel Sarl  
Route des Arsenaux 41  
Case Postale 80  
CH-1705 Fribourg  
Switzerland  
Tel: (41) 26-426-5555  
Fax: (41) 26-426-5500  
Fax: 1(719) 540-1759  
Biometrics/Imaging/Hi-Rel MPU/  
High Speed Converters/RF Datacom  
Avenue de Rochepleine  
La Chantrerie  
BP 70602  
44306 Nantes Cedex 3, France  
Tel: (33) 2-40-18-18-18  
Fax: (33) 2-40-18-19-60  
BP 123  
38521 Saint-Egreve Cedex, France  
Tel: (33) 4-76-58-30-00  
Fax: (33) 4-76-58-34-80  
Asia  
Room 1219  
Chinachem Golden Plaza  
77 Mody Road Tsimshatsui  
East Kowloon  
Hong Kong  
Tel: (852) 2721-9778  
Fax: (852) 2722-1369  
ASIC/ASSP/Smart Cards  
Zone Industrielle  
13106 Rousset Cedex, France  
Tel: (33) 4-42-53-60-00  
Fax: (33) 4-42-53-60-01  
1150 East Cheyenne Mtn. Blvd.  
Colorado Springs, CO 80906, USA  
Tel: 1(719) 576-3300  
Japan  
9F, Tonetsu Shinkawa Bldg.  
1-24-8 Shinkawa  
Chuo-ku, Tokyo 104-0033  
Japan  
Tel: (81) 3-3523-3551  
Fax: (81) 3-3523-7581  
Fax: 1(719) 540-1759  
Scottish Enterprise Technology Park  
Maxwell Building  
East Kilbride G75 0QR, Scotland  
Tel: (44) 1355-803-000  
Fax: (44) 1355-242-743  
Literature Requests  
www.atmel.com/literature  
Disclaimer: Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard  
warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any  
errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and  
does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are  
granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use  
as critical components in life support devices or systems.  
© Atmel Corporation 2003. All rights reserved.  
Atmel® and combinations thereof are the registered trademarks of Atmel Corporation or its subsidiaries.  
Other terms and product names may be the trademarks of others.  
Printed on recycled paper.  
4530C–BCD–11/03  

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