MTP12P10

4

Motorola TMOS Power MOSFET Transistor Device Data

SAFE OPERATING AREA INFORMATION

VDS, DRAIN–TO–SOURCE VOLTAGE (VOLTS)

Figure 7. Maximum Rated Forward Biased

Safe Operating Area

VDS, DRAIN–TO–SOURCE VOLTAGE (VOLTS)

Figure 8. Maximum Rated Switching

Safe Operating Area

0

20

40

60

80

0

40

50

100

RDS(on) LIMIT

PACKAGE LIMIT

THERMAL LIMIT

10

VGS = 20 V

SINGLE PULSE

TC = 25°C

1

1

10

10

µs

1 ms

10 ms

30

10

100

0.1 ms

MTM/MTP12P06

MTM/MTP12P10

20

10

30

50

70

90

MTM/MTP12P06

MTM/MTP12P10

dc

FORWARD BIASED SAFE OPERATING AREA

The FBSOA curves define the maximum drain–to–source

voltage and drain current that a device can safely handle

when it is forward biased, or when it is on, or being turned on.

Because these curves include the limitations of simultaneous

high voltage and high current, up to the rating of the device,

they are especially useful to designers of linear systems. The

curves are based on a case temperature of 25

°C and a maxi-

mum junction temperature of 150

°C. Limitations for repetitive

pulses at various case temperatures can be determined by

using the thermal response curves. Motorola Application

Note, AN569, “Transient Thermal Resistance–General Data

and Its Use” provides detailed instructions.

SWITCHING SAFE OPERATING AREA

The switching safe operating area (SOA) of Figure 8 is the

boundary that the load line may traverse without incurring

damage to the MOSFET. The fundamental limits are the

peak current, IDM and the breakdown voltage, V(BR)DSS. The

switching SOA shown in Figure 8 is applicable for both turn–

on and turn–off of the devices for switching times less than

one microsecond.

The power averaged over a complete switching cycle must

be less than:

TJ(max) – TC

R

θJC

Figure 9. Thermal Response

R

θJC(t) = r(t) RθJC

R

θJC = 1.67°C/W MAX

D CURVES APPLY FOR POWER

PULSE TRAIN SHOWN

READ TIME AT t1

TJ(pk) – TC = P(pk) R

θJC(t)

P(pk)

t1

t2

DUTY CYCLE, D = t1/t2

t, TIME (ms)

1

0.01

D = 0.5

0.05

0.01

SINGLE PULSE

0.01

0.02

0.03

0.02

0.05

0.1

0.2

0.3

0.5

0.02

0.05

0.1

0.2

0.5

1

2

5

10

20

50

100

200

500

1000

0.1

0.2