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부품번호 | U6820BM 기능 |
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기능 | Dual Quad BCDMOS Driver IC | ||
제조업체 | ATMEL Corporation | ||
로고 | |||
전체 11 페이지수
www.DataSheet4U.com
Features
• Four Short-circuit-protected High-side Drivers with a Maximum Current Capability of
50 mA Each
• Four Short-circuit-protected Low-side Drivers with a Maximum Current Capability of
50 mA Each
• ON Resistance High Side Ron < 10 Ω Versus Total Temperature Range
• ON Resistance Low Side Ron < 7 Ω Versus Total Temperature Range
• Short-circuit Detection of Each Driver Stage
• Disabling of Driver Stages in the Case of Short-circuit and Overtemperature Detection
• Independent Control of Each Driver Stage via an 8-bit Shift Register
• Status Output Reports Short-circuit Condition
• Status Output Reports when All Loads Are Switched Off
• Timing of Status Output Reset Signalizes Failure Mode
• Temperature Protection in Conjunction with Short-circuit Detection
Description
The U6820BM is a driver interface in BCDMOS technology with 8 independent driver
stages having a maximum current capability of 50 mA each. Its partitioning into 4
high-side and 4 low-side driver stages allows an easy connection of either 4 half-
bridges or 2 H-bridges on the pc board. The U6820BM communicates with a micro-
controller via an 8-bit serial interface. Integrated protection against short circuit and
overtemperature give added value. EMI protection and 2-kV ESD protection together
with automotive qualification referring to conducted interference (ISO/TR 7637/1)
make this IC ideal for both automotive and industrial applications.
Figure 1. Block Diagram
VCC
6
HS4 HS3 HS2 HS1
16 9 8 1
Dual Quad
BCDMOS
Driver IC
U6820BM
14
STATUS
CS 11
CLK 12
DI 13
V CC
Current
limiter
Current
limiter
HHHH L L L L
SSSSSSSS
43 2143 21
Input Register
Control
logic
V CC
Current
limiter
Current
limiter
Current
limiter
Current
limiter
3
VS
Thermal protection
V CC
Power-on reset
Current
limiter
Current
limiter
V CC
5 GND S
4
GNDCC
15
LS4
10
LS3
72
LS2 LS1
Rev. 4527A–BCD–03/02
1
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Short-circuit Protection
The current of the output stages is limited by an active feedback control. Short circuit at
one output stage sets the diagnostic Pin 14 (STATUS) to high. In case of both condi-
tions, short circuit at one of the outputs and temperature detection, the affected output is
switched off selectively. It will be activated again after the first new data transfer.
Inductance Protection
Clamping diodes and FETs are integrated to protect the IC against too high or too low
voltages at the outputs. They prevent the IC from latch up and parasitic currents which
may exceed power dissipation.
Temperature Protection
ESD Protection
The IC is protected by an overtemperature detection. As soon as the junction tempera-
ture Tj = 155°C typically is exceeded, the diagnostic Pin 14 (STATUS) is set “high”.
General overtemperature detection along with short-circuit condition at a specific output
result in temperature shut down at that specific output. After temperature shut down, the
data input register has to be set again with a hysteresis of typically ∆T = 15 K
(Tj = 140°C).
All output stages are protected against electrostatic discharge up to 5 kV (HBM) with
external components (see Figure 5), all other pins are protected up to 2 kV (HBM).
Table 1. Timing of the STATUS Output
Shift Register
Command
Register
Condition
0000000000000000
1111111111111111
0000000100000001
0111111101111111
1111111111101111
1100001100000000
11100011x x x x x x x x
00011100x x x x x x x x
All out = OK
All on = OK
E.g. one on = OK
Short at LS3
Temp & short at HS4
VVCC < 3.7 V = P-ON
CS with less 8 CLK
CS with more 8 CLK
Low-side Switch
High-side Switch
Status
LS1 LS2 LS3 LS4 HS1 HS2 HS3 HS4 Set Reset
off off off off off off off off H New CS
on on on on on on on on L
off off off off off off off on L
off on on on on on on on H No short
on on on off on on on on H New CS4
off off off off off off off off H P-ON, CS
x x x x x x x x H New CS 8
x x x x x x x x H New CS 2
4 U6820BM
4527A–BCD–03/02
4페이지 www.DataSheet4U.com
U6820BM
Absolute Maximum Ratings
Parameters
Supply voltage
Pin
3
Logic supply voltage
Logic input voltage
Logic output voltage
6
11, 12 13
14
Input current
Output current
(internally limitted)
3
6
1-2, 8-11, 15-16
Junction temperature range
Storage temperature range
Symbol
VVS
VVCC
CS, CLK, DI
STATUS
IVS
IVCC
I 1H-4H and I 1L-4L
Tj
Tstg
Minimum
-0.3
-0.3
-0.3
-0.3
30
-40
-55
Maximum
+40
+7
VVCC + 0.5
VVCC + 0.3
0.2
5
65
+150
+150
Thermal Resistance
Parameters
Junction ambient
Junction case
Symbol
RthJA
RthJC
Value
110
26
Unit
V
V
V
V
mA
mA
mA
°C
°C
Unit
K/W
K/W
Operating Range
Parameters
Supply voltage
Logic supply voltage
Logic input voltage low
Logic input voltage high
Logic output voltage (1 mA load)
Clock frequency
Junction temperature range
Pin
3
6
11, 12, 13
11, 12, 13
14
Symbol
VVS
VVCC
CS, CLK, DI
CS, CLK, DI
STATUS
fCLK
Tj
Value
6 to 18
4.5 to 5.5
-0.2 to (0.2 x VVCC)
(0.7 x VVCC) to (VVCC + 0.3)
0.5 to (VVCC - 1)
5
-40 to +150
Unit
V
V
V
V
V
MHz
°C
4527A–BCD–03/02
7
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
U6820BM | Dual Quad BCDMOS Driver IC | ATMEL Corporation |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |