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LTC7821 Datasheet(PDF) 3 Page - Analog Devices

Part # LTC7821
Description  100V Half-Bridge Driver with Floating Grounds and Adjustable Dead-Time
PDF  18 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC7821 Datasheet(HTML) 3 Page - Analog Devices

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LTC7060
3
Rev. A
For more information www.analog.com
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Supply and VCC Supply
VIN
Input Supply Operating Range
100
V
VCC
IC Supply Operating Range
6
14
V
IVCC
VCC Supply Current
VEN = VPWM = 0V, RDT = 100kΩ
0.4
mA
VUVLO_VCC
VCC Undervoltage Lockout Threshold
VCC Falling
5
5.3
5.6
V
Hysteresis
0.3
V
VOVLO_VCC
VCC OVLO Threshold
VCC Rising
14.6
V
Hysteresis
0.8
V
BG Gate Driver Supply (BGVCC-BGRTN)
VBGVCC-BGRTN
BG Driver Supply Voltage Range
(With Respect to BGRTN)
4
14
V
IBGVCC
Total BGVCC Current (Note 4)
BG = Low
8
µA
BG = High
100
µA
VUVLO_BGVCC
Undervoltage Lockout Threshold
BGVCC Falling, With Respect to BGRTN
3.4
V
Hysteresis
0.3
V
TG Gate Driver Supply (BST-SW)
VBST-SW
TG Driver Supply Voltage Range
(With Respect to SW)
4
14
V
IBST
Total BST Current (Note 4)
TG = Low
8
µA
TG = High
100
µA
VUVLO_BST
Undervoltage Lockout Threshold
BST Falling, With Respect to SW
3.4
V
Hysteresis
0.3
V
Input Signal (PWM, EN)
VIH(TG)
TG Turn-On Input Threshold
PWM Rising
l
2.6
3.1
3.6
V
VIL(TG)
TG Turn-Off Input Threshold
PWM Falling
l
2.45
2.95
3.45
V
VIH(BG)
BG Turn-On Input Threshold
PWM Falling
l
0.5
1
1.5
V
VIL(BG)
BG Turn-Off Input Threshold
PWM Rising
l
0.75
1.25
1.75
V
VPWM_TRI
PWM Input Three-State Float Voltage
1.9
2.1
2.3
V
RUP_PWM
PWM Internal Pull-Up Resistor
To Internal 4.5V Supply
48
kΩ
RDOWN_PWM
PWM Internal Pull-Down Resistor
42
kΩ
VENR
EN Pin Rising Threshold
EN Rising
l
1.1
1.2
1.3
V
VENF
EN Pin Falling Threshold
EN Falling
1.1
V
REN
EN Pin Internal Pull-Down Resistor
2
MΩ
Dead-Time and FAULT (DT, FLT)
tPLH(BG) /
tPLH(TG)
BG/TG Low to TG/BG High Propagation
Delay (Dead-Time)
RDT = 0Ω
32
ns
RDT = 24.9kΩ
43
ns
RDT = 64.9kΩ
62
ns
RDT = 100kΩ
76
ns
RDT = Open
250
ns
RFLTb
Open Drain Pull-Down Resistance
60
Ω
tFLTb
FLT Pin Release Delay
Low to High
100
µs
The l denotes the specifications which apply over the specified operating
temperature range, otherwise specifications are at TA = 25°C (Note 2). VCC = VBGVCC = VBST =10V, VBGRTN = VSW = 0V, unless
otherwise noted.



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