HUF76139P3, HUF76139S3S
Typical Performance Curves (Continued)
4000
3000
2000
VGS = 0V, f = 1MHz
CISS = CGS + CGD
CRSS = CGD
COSS ≈ CDS + CGD
CISS
1000
COSS
CRSS
0
0
5
10
15
20
25
30
VDS, DRAIN TO SOURCE VOLTAGE (V)
FIGURE 13. CAPACITANCE vs DRAIN TO SOURCE VOLTAGE
800
VGS = 4.5V, VDD = 15V, ID = 61A, RL = 0.246Ω
600
tr
400
td(OFF)
tf
200
td(ON)
0
0
10
20
30
40
50
RGS, GATE TO SOURCE RESISTANCE (Ω)
FIGURE 15. SWITCHING TIME vs GATE RESISTANCE
10
VDD = 15V
8
6
4
WAVEFORMS IN
DESCENDING ORDER:
2
ID = 75A
ID = 50A
ID = 25A
0
0
20
40
60
80
Qg, GATE CHARGE (nC)
NOTE: Refer to Fairchild Application Notes AN7254 and AN7260.
FIGURE 14. GATE CHARGE WAVEFORMS FOR CONSTANT
GATE CURRENT
500
VGS = 10V, VDD = 15V, ID = 75A, RL= 0.2Ω
400
td(OFF)
300
200
tf
100
tr
td(ON)
0
0
10
20
30
40
50
RGS, GATE TO SOURCE RESISTANCE (Ω)
FIGURE 16. SWITCHING TIME vs GATE RESISTANCE
Test Circuits and Waveforms
VARY tP TO OBTAIN
REQUIRED PEAK IAS
RG
VGS
tP
0V
VDS
L
DUT
+
VDD
-
IAS
0.01Ω
FIGURE 17. UNCLAMPED ENERGY TEST CIRCUIT
tP
IAS
BVDSS
VDS
VDD
0
tAV
FIGURE 18. UNCLAMPED ENERGY WAVEFORMS
©2003 Fairchild Semiconductor Corporation
HUF76139P3, HUF76139S3S Rev. B1