S E M I C O N D U C T O R
April 1995
RHRD4120,
RHRD4120S
4A, 1200V Hyperfast Diodes
Features |
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Package |
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Hyperfast with Soft Recovery . . . . . . . . . . . . . . . |
. <60ns |
JEDEC STYLE TO-251 |
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Operating Temperature . . . . . . . . . . . . . . . . . . . . |
+175oC |
ANODE |
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Reverse Voltage |
1200V |
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CATHODE |
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Avalanche Energy Rated |
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Planar Construction |
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CATHODE |
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(FLANGE) |
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Applications |
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Switching Power Supplies |
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JEDEC STYLE TO-252 |
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Power Switching Circuits |
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General Purpose |
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CATHODE |
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(FLANGE) |
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Description |
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ANODE |
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CATHODE |
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RHRD4120 and RHRD4120S (TA49056) are hyperfast diodes with soft recovery characteristics (tRR < 60ns). They have half the recovery time of ultrafast diodes and are silicon nitride passivated ion-implanted epitaxial planar construction.
These devices are intended for use as freewheeling/clamping |
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diodes and rectifiers in a variety of switching power supplies |
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and other power |
switching applications. Their low stored |
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charge and hyperfast soft recovery minimize ringing and elec- |
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trical noise in many power switching circuits, reducing power |
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loss in the switching transistors. |
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PACKAGING AVAILABILITY |
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PART NUMBER |
PACKAGE |
BRAND |
A |
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RHRD4120 |
TO-251 |
HR4120 |
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RHRD4120S |
TO-252 |
HR4120 |
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NOTE: When ordering, use the entire part number. Add the suffix 9A to obtain the TO-252AA variant in the tape and reel, i.e., RHRD4120S9A.
Absolute Maximum Ratings TC = +25oC, Unless Otherwise Specified |
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RHRD4120 |
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RHRD4120S |
UNITS |
Peak Repetitive Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . VRRM |
1200 |
V |
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Working Peak Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. .VRWM |
1200 |
V |
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DC Blocking Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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VR |
1200 |
V |
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Average Rectified Forward Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . IF(AV) |
4 |
A |
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(TC = +147.5oC) |
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Repetitive Peak Surge Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . IFSM |
8 |
A |
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(Square Wave, 20kHz) |
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Nonrepetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . IFSM |
40 |
A |
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(Halfwave, 1 phase, 60Hz) |
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Maximum Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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PD |
50 |
W |
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Avalanche Energy (L = 40mH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . .EAVL |
10 |
mj |
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Operating and Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
T |
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J |
-65 to +175 |
oC |
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STG |
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Copyright © Harris Corporation 1995 |
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File Number |
3626.2 |
7-9
Specifications RHRD4120, RHRD4120S
Electrical Specifications TC = +25oC, Unless Otherwise Specified
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RHRD4120, RHRD4120S |
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SYMBOL |
TEST CONDITION |
MIN |
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TYP |
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MAX |
UNITS |
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VF |
IF = 4A, TC = +25oC |
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3.2 |
V |
VF |
IF = 4A, TC = +150oC |
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2.6 |
V |
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IR |
VR = 1200V, TC = +25oC |
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100 |
μA |
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IR |
VR = 1200V, TC = +150oC |
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500 |
μA |
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tRR |
IF = 1A, dIF/dt = 100A/μs |
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IF = 4A, dIF/dt = 100A/μs |
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ns |
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tA |
IF = 4A, dIF/dt = 100A/μs |
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tB |
IF = 4A, dIF/dt = 100A/μs |
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QRR |
IF = 4A, dIF/dt = 100A/μs |
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140 |
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nC |
CJ |
VR = 10V, IF = 0A |
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15 |
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pF |
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R |
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3 |
oC/W |
θJC |
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DEFINITIONS
VF = Instantaneous forward voltage (pw = 300μs, D = 2%).
IR = Instantaneous reverse current.
tRR = Reverse recovery time (See Figure 2), summation of tA + tB. tA = Time to reach peak reverse current (See Figure 2).
tB = Time from peak IRM to projected zero crossing of IRM based on a straight line from peak IRM through 25% of IRM (See Figure 2).
RθJC = Thermal resistance junction to case.
EAVL = Controlled avalanche energy (See Figure 9 and Figure 10). pw = pulse width.
D = duty cycle.
V1 AMPLITUDE CONTROLS IF |
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V2 AMPLITUDE CONTROLS dIF/dt |
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+V3 |
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= SELF INDUCTANCE OF |
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1 |
R4 + LLOOP |
R1 |
Q2 |
t1 ³ 5tA(MAX) |
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t2 > tRR |
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Q1 |
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t3 > 0 |
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L1 £ tA(MIN) |
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+V1 |
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0 |
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R4 |
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dIF |
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tRR |
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LLOOP |
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IF |
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t2 |
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dt |
tA |
tB |
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t1 |
R2 |
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DUT |
0 |
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Q4 |
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0.25 IRM |
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t3 |
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IRM |
0 |
C1 |
R4 |
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VR |
Q3 |
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-V2 |
R3 |
-V4 |
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VRM |
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FIGURE 1. tRR TEST CIRCUIT |
FIGURE 2. tRR WAVEFORMS AND DEFINITIONS |
7-10
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RHRD4120, RHRD4120S |
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Typical Performance Curves |
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20 |
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100 |
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+175oC |
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FORWARD CURRENT (A) |
10 |
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+175oC |
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REVERSE CURRENT (μA) |
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10 |
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+100oC |
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1 |
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+100oC |
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0.1 |
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+25oC |
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0.01 |
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1 |
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F |
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I |
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R |
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I |
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+25oC |
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0.5 |
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0.001 |
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0 |
0.5 |
1 |
1.5 |
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2.5 |
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3.5 |
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4.5 |
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200 |
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400 |
600 |
800 |
1000 |
1200 |
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VF , FORWARD VOLTAGE (V) |
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VR, REVERSE VOLTAGE (V) |
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FIGURE 3. TYPICAL FORWARD CURRENT vs FORWARD |
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FIGURE 4. TYPICAL REVERSE CURRENT vs REVERSE |
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VOLTAGE DROP |
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VOLTAGE |
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T |
C |
= +25oC |
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T = +100oC |
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75 |
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100 |
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C |
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(ns) |
60 |
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(ns) |
80 |
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tRR |
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tRR |
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TIMES |
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TIMES |
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45 |
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60 |
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t , RECOVERY |
30 |
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tA |
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t , RECOVERY |
40 |
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t |
A |
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tB |
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tB |
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15 |
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0 |
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0.5 |
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0.5 |
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IF , FORWARD CURRENT (A) |
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IF , FORWARD CURRENT (A) |
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FIGURE 5. TYPICAL tRR , tA AND tB CURVES vs FORWARD |
FIGURE 6. TYPICAL tRR , tA AND tB CURVES vs FORWARD |
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CURRENT |
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CURRENT |
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TC = +175oC |
(A) |
5 |
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100 |
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CURRENT |
4 |
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tRR |
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DC |
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t, RECOVERY TIMES |
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AVERAGE FORWARD |
3 |
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75 |
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SQ. WAVE |
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50 |
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tA |
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tB |
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25 |
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F(AV) |
0 |
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1 |
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I |
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0.5 |
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125 |
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I , FORWARD CURRENT (A) |
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T |
C |
, CASE TEMPERATURE (oC) |
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F |
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FIGURE 7. TYPICAL tRR, tA AND tB CURVES vs FORWARD |
FIGURE 8. CURRENT DERATING CURVE FOR ALL TYPES |
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CURRENT |
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7-11 |
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RHRD4120, RHRD4120S |
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IMAX = 1A |
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L = 40mH |
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R < 0.1Ω |
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EAVL = 1/2LI2 [VAVL/(VAVL - VDD)] |
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Q1 AND Q2 ARE 1000V MOSFETs |
L |
R |
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Q1 |
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VDD |
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130Ω |
1MΩ |
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DUT |
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Q2 |
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VAVL |
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12V |
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CURRENT |
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IL |
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130Ω |
SENSE |
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I |
V |
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VDD |
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- |
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12V |
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t0 |
t1 |
t2 |
t |
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FIGURE 9. AVALANCHE ENERGY TEST CIRCUIT |
FIGURE 10. AVALANCHE CURRENT AND VOLTAGE WAVE- |
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FORMS |
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7-12 |
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