Typical operating characteristics (continued) – Rainbow Electronics MAX5970 User Manual
Page 7
0V to 16V, Dual Hot-Swap Controller with 10-Bit
Current and Voltage Monitor and 4 LED Drivers
MAX5970
_______________________________________________________________________________________ 7
Typical Operating Characteristics (continued)
(V
IN
= 3.3V, T
A
= +25NC, unless otherwise noted.)
TURN-OFF WAVEFORM
(FAST COMPARATOR
FAULT/SHORT-CIRCUIT RESPONSE)
MAX5970 toc12
V
MON_
10V/div
I
LOAD
5A/div
V
GATE_
10V/div
FAULT_
5V/div
100µs/div
VOLTAGE BUFFER vs. TIME
MAX5970 toc13
TIME (ms)
VOLTAGE BUFFER (V)
2.0
1.5
-2.0 -1.5 -1.0
0 0.5
-0.5
1.0
2
4
6
8
10
12
14
16
CIRCULAR BUFFER CONTENT AT SLOW-TRIP
FAULT MON = 16V, CURRENT SENSE = 50mV
0
-2.5
2.5
SLOW-COMPARATOR FAULT EVENT
MAX5970 toc14
V
MON_
10V/div
I
LOAD
2A/div
V
GATE_
10V/div
V
FAULT
5V/div
400µs/div
VOLTAGE ADC ACCURACY
vs. MON_ VOLTAGE
MAX5970 toc15
V
MON_
(V)
VOLTGE ADC ACCURACY (%FS)
3.5
3.0
2.0 2.5
1.0 1.5
0.5
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0
4.0
MON_ VOLTAGE RANGE = 4V
CURRENT ADC ACCURACY
vs. (V
SENSE_
- V
MON_
)
MAX5970 toc16
(V
SENSE_
- V
MON_
) (mV)
CURRENT ADC ACCURACY (% FS)
22.5
20.0
15.0 17.5
5.0 7.5 10.0 12.5
2.5
-4
-3
-2
-1
0
1
2
3
4
5
-5
0
25.0
CURRENT BUFFER vs. TIME
MAX5970 toc17
TIME (ms)
CURRENT BUFFER (A)
2.0
1.5
0.5 1.0
-1.5 -1.0 -0.5 0
-2.0
1
2
3
4
5
6
7
8
DEFAULT SETTING
9
10
0
-2.5
2.5
VOLTAGE BUFFER vs. TIME
MAX5970 toc18
TIME (ms)
VOLTAGE BUFFER (V)
2.0
1.5
0.5 1.0
-1.5 -1.0 -0.5 0
-2.0
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.5
-2.5
2.5
VOLTAGE DATA AT SHORT CIRCUIT ON
POWER-UP DEFAULT SETTING V
MON
= 16V
STARTUP INTO SHORT LOAD
MAX5970 toc19
V
MON_
1V/div
V
ON_
5V/div
I
LOAD
5A/div
V
GATE
2V/div
FAULT_
5V/div
4ms/div
INPUT LEAKAGE CURRENT
vs. MON_ VOLTAGE
MAX5970 toc20
V
MON_
(V)
INPUT LEAKAGE CURRENT (µA)
14
12
8
10
4
6
2
20
40
60
80
100
120
140
160
180
200
0
0
16
I
MON_
I
SENSE_