ISL6571 Datasheet, PDF (6/11 Pages) Intersil Corporation – Complementary MOSFET Driver and Synchronous Half-Bridge Switch

ISL6571
Typical Performance Curves/Setup
+12V
+5V
+12V
C_VCC
C_PVCC
∆I_LOUT(p-p)
V_OUT
R_OUT
C_VIN
VCC PVCC BOOT VIN
C_BOOT
PWM
CONTROL
AND
DRIVERS
ISL6571
GND
PGND
L_OUT
PHASE
C_OUT
V_OUT
R_OUT
FIGURE 4. TYPICAL TEST CIRCUIT
1.8
V_GS = 10V
1.6
I_D = 12A
1.4
1.2
1.0
0.8
0.6
-25 0
25
50
75 100 125 150
Tj (°C)
FIGURE 5. UPPER MOSFET ON RESISTANCE vs
TEMPERATURE
126
V_PVCC = 5V
108 _{VPVCC = 10V}
I_PHASE = 0A
90
1.26
1.08
0.90
72
0.72
54
0.54
36
0.36
18
0.18
0
100 200
300 400 500 600 700 800
SWITCHING FREQUENCY (kHz)
0
900 1000
FIGURE 6. BIAS SUPPLY CURRENT/POWER vs FREQUENCY
1.6
V_GS = 10V
1.4
I_D = 20A
1.2
1.0
0.8
0.6
-25 0
25
50
75 100 125 150
Tj (°C)
FIGURE 7. LOWER MOSFET ON RESISTANCE vs
TEMPERATURE
4.00
3.50
V_PVCC = 5V
I_LOUT = 12A
L_OUT = 1µH
3.00
2.50
2.00
1.50
200 300
400 500 600 700 800
SWITCHING FREQUENCY (kHz)
900 1000
FIGURE 8. ISL6571 POWER DISSIPATION vs FREQUENCY
AT 12A
4.00
3.50
3.00
V_PVCC = 5V
L_OUT = 1µH
12Vin/1.5Vout
2.50
2.00
750kHz
500kHz
300kHz
200kHz
1.50
1.00
0.50
0
0 1.5 3.0 4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0 16.5
OUTPUT CURRENT (A)
FIGURE 9. ISL6571 POWER DISSIPATION vs CURRENT AT
200kHz, 300kHz, 500kHz, 750kHz
6
FN9082.4