MAX13253 Datasheet, PDF (5/14 Pages) Maxim Integrated Products – 1A, Spread-Spectrum, Push-Pull, Transformer Driver for Isolated Power Supplies

MAX13253
1A, Spread-Spectrum, Push-Pull, Transformer
Driver for Isolated Power Supplies
Typical Operating Characteristics
(V_DD = +5V, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs.
EXTERNAL CLOCK FREQUENCY
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
EXTERNAL CLOCK FREQUENCY (MHz)
SWITCHING FREQUENCY
vs. TEMPERATURE
660
610 ^{HICLK = VDD}
560
510
460
CLK = GND
SPRD = GND
410
360
310
260 ^{HICLK = GND}
210
-45 -20
5 30 55 80 105 130
TEMPERATURE (°C)
CURRENT LIMIT
vs. TEMPERATURE
1.6
1.5
1.4 ^{VDD = 5V}
1.3 VDD = 3.3V
1.2
1.1
1.0
-45 -20
5 30 55 80 105 130
TEMPERATURE (°C)
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0
0
T1/T2 OUTPUT VOLTAGE LOW
vs. OUTPUT CURRENT
VDD = 3.3V
VDD = 5V
0.2 0.4 0.6 0.8 1.0
OUTPUT CURRENT (A)
200
180
160
140
120
100
80
60
40
20
0
0
FAULT OUTPUT VOLTAGE LOW
vs. SINK CURRENT
FAULT IS ASSERTED
10
20
30
40
SINK CURRENT (mA)
ISOLATED OUTPUT VOLTAGE
vs. LOAD CURRENT
10
9
8
7
6
5
4
CLK = GND
HICLK = GND
3 SPRD = GND
2
1:1:1.3:1.3
HALO TGM-H240V8LF
1 TRANSFORMER
0
0
0.2
0.4
0.6
0.8
LOAD CURRENT (A)
ISOLATED OUTPUT VOLTAGE
vs. LOAD CURRENT
12
11
10
9
8
7
6
5 _{CLK = GND}
4 HICLK = GND
3 ^{SPRD = GND}
2
1:1:2:2
HALO TGM-H260V8LF
1 _TRANSFORMER
0
0 0.1 0.2 0.3 0.4 0.5 0.6
LOAD CURRENT (A)
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