NIS3001 データシートの表示（PDF） - ON Semiconductor
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NIS3001 Datasheet PDF : 18 Pages
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NIS3001
PIN = (VVS * IVS) + (VIN * IIN)
POUT = (VOUT * IOUT)
Efficiency = POUT/PIN
PLOSS = PIN − POUT
Average
VS Voltage
VS
A
5V +
Average
− VS
Current
V
EN
BST
Driver
TG
VIN
Average
Input Voltage
V
Average
Input Current
A
+
12 V
−
DRN
Average
Output
Current
A
Load
PWM
Signal
CO
GND
BG
PGND
This Test Circuit was used to characterize the NIS3001 during operation.
Figure 3. Test Circuit
Averaging
Circuit
Average
V Output
Voltage
TYPICAL PERFORMANCE CURVES
9
8 TA = 25°C
VIN = 12 V
7 VVS = 5.0 V
6
VOUT = 1.5 V
Airflow = 200 lfm
5
4
3
2
1
FSW = 1000 kHz
750 kHz
500 kHz
350 kHz
96
94
92 350 kHz
500 kHz
90
88
86
750 kHz
84
FSW = 1000 kHz
82
TA = 25°C
VIN = 12 V
VVS = 5.0 V
VOUT = 1.5 V
Airflow = 200 lfm
0
80
0
5
10
15
20
25
0
5
10
15
20
25
IOUT, OUTPUT CURRENT (A)
IOUT, OUTPUT CURRENT (A)
Figure 4. Power Loss versus Output Current
Figure 5. Efficiency versus Output Current
25
TA = 25°C
23
21
19
VIN = 12 V
VEN = 3.5 V
FSW = 500 kHz
17
VOUT = 1.5 V
IOUT = 15 A
15
4.5
5
5.5
6
VVS, DRIVER VOLTAGE (V)
Figure 6. Driver Current versus Driver Voltage
40
35
TA = 25°C
30
25
20
15
VIN = 12 V
VVS = 5.0 V
10
VEN = 3.5 V
VOUT = 1.5 V
5
IOUT = 15 A
0
100 200 300 400 500 600 700 800 900 1000
FSW, SWITCHING FREQUENCY (kHz)
Figure 7. Driver Current versus Switching Frequency
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