MIC5021_05 Datasheet, PDF (4/10 Pages) Micrel Semiconductor – High-Speed High-Side MOSFET Driver

MIC5021
Typical Characteristics
Supply Current vs.
Supply Voltage
2.5
2.0
V_IN = 0V
1.5
V_IN = 5V
1.0
0.5
0.0
5
10 15 20 25 30 35 40
V_SUPPLY (V)
Gate Voltage Change
vs. Supply Voltage
25
V_{G AT E} = V_{G AT E} – V_{S U P P L Y}
20
15
10
5
0
5 10 15 20 25 30 35 40
V_SUPPLY (V)
Micrel, Inc.
Gate Turn-On Dalay vs.
Supply Voltage
900
V_GATE = V_SUPPLY + 4V
850
C_L = 1500pF (IRCZ34)
C_BOOST = 0.01µF
800
750
700
INCLUDES PROPAGATION DELAY
650
5
10 15 20 25 30 35 40
V_SUPPLY (V)
1000
950
900
Gate Turn-On Delay vs.
Supply Voltage
V_GATE = V_SUPPLY + 10V
C_L = 1500pF (IRCZ34)
C_BOOST = 0.01µF
850
800
750
5
INCLUDES PROPAGATION DELAY
10 15 20 25 30 35 40
V_SUPPLY (V)
Gate Turn-On Delay vs.
Gate Capacitance
2.5
V_GATE = V_SUPPLY + 4V
2.0 ^VSUPPLY ^{= 12V}
1.5
1.0
0.5
INCLUDES PROPAGATION DELAY
0.0
1x10⁰ 1x10¹ 1x10² 1x10³ 1x10⁴ 1x10⁵
C_GATE (pF)
2000
1750
Gate Turn-Off Delay vs.
Supply Voltage
V_{G ATE} = V_SUPPLY + 4V
R_L = 400
1500
1250
C_{G ATE} = 1500pF
(IRCZ34)
1000
750
5
INCLUDES PROPAGATION DELAY
10 15 20 25 30 35 40
V_SUPPLY (V)
Overcurrent Retry Duty
Cycle vs. Timing Capacitance
25
t_ON = 5µs
20
V_SUPPLY = 12V
Input Current vs.
Input Voltage
100
V_SUPPLY = 12V
80
15
60
10 _{NOT E:}
t_ON, t_OFF T I M E
5 ^INDEPENDENT
O F V_SUPPLY
0
0.1 1 10 100 1000 10000
C_T (pF)
40
20
0
0 5 10 15 20 25
V_IN (V)
TTL (H)
Input
0V
Gate 15V (max.)
Source
Sense +,– _50mV
Differential _0V
Timing Diagram 1. Normal Operation
Sense Threshold vs.
Temperature
80
70
60
50
40
30
20
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
6µs
20µs
TTL (H)
Input
0V
Gate ^{15V (max.)}
Source
Sense +,– _50mV
Differential _0V
Timing Diagram 2. Fault Condition, C_T = Open
MIC5021
6µs
Input
TTL (H)
0V
Gate ^{15V (max.)}
Source
Sense +,– _50mV
Differential _0V
Timing Diagram 3. Fault Condition, C_T = Grounded
4
July 2005