VRF152

16

18

20

22

24

26

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

0

50

100

150

200

250

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

10

1.0

-1

0.5

SINGLE PULSE

0.1

0.3

0.7

0.05

Peak TJ = PDM x ZθJC + TC

Duty Factor D =

2

t2

t1

Note:

RECTANGULAR PULSE DURATION (seconds)

Figure 5. Maximum Effective Transient Thermal Impedance Junction-to-Case vs Pulse Duration

0

50

100

150

200

250

0

0.2 0.4 0.6

0.8 1

1.2 1.4

OUTPUT POWER (WATTS PEP)

Figure 6. Gain and Efficiency vs P

out

INPUT POWER (WATTS PEP)

Figure 7. P

Typical Performance Curves

Vdd=50V, Idq = 250mA,

Freq=30MHz

D = 0.9

8

10

12

14

0

0. 1

0. 2

0. 3

0. 4

0. 5

0. 6

0. 7

0. 8

0. 9

0

50

100

150

200

250

0

50

100

150

200

250

0

5

10

50

20

OUTPUT POWER (WATTS PEP)

Figure 8. Gain and Efficiency vs P

out

INPUT POWER (WATTS PEP)

Figure 9. P

Vdd=50V, Idq = 250mA,

Freq=175MHz