LTC3726 Datasheet, PDF (5/16 Pages) Linear Technology – Secondary-Side Synchronous Forward Controller

TYPICAL PERFOR A CE CHARACTERISTICS
LTC3726
FB Voltage vs Temperature
601.0
FB Voltage Line Regulation
601.0
600.5
600.5
600.0
600.0
599.5
599.5
599.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3726 G15
599.0
0
5 10 15 20 25 30
V_IN SUPPLY VOLTAGE (V)
3726 G11
Undervoltage Lockout
vs Temperature
4.65
4.60
4.55
V_CC RISING
4.50
4.45
4.40
4.35
4.30
4.25
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3726 G16
Gate Driver On-Resistance vs V_CC
1.8
1.7
Gate Driver On-Resistance
vs Temperature
2.50
V_CC = 7V
2.25
1.6
2.00
1.5
1.75
PULL-DOWN
1.4
1.50
PULL-UP
1.3
1.25
1.2
5
6
7
8
9
10
V_CC VOLTAGE (V)
3726 G12
1.00
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3726 G13
Efficiency (Figure 5)
95
V_IN = 36V
90
V_IN = 72V
85
80
0
5
10
15
20
25
LOAD CURRENT (A)
3726 G17
Load Step (Figure 5)
V_OUT
100mV/DIV
I_OUT
10A/DIV
20µs/DIV
V_IN = 48V
V_OUT = 3.3V
LOAD STEP = 0A TO 20A
3726 G18
3726fb
5