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MJ10009

SWITCHMODE Series NPN Silicon Power Darlington Transistor with Base-Emitter Speedup Diode

Motorola => Freescale 

MJ10009

Table 1. Test Conditions for Dynamic Performance

VCEO(sus)

1

20

0

2

PW Varied to Attain

IC = 100 mA

Lcoil = 10 mH, VCC = 10 V

Rcoil = 0.7 Ω

Vclamp = VCEO(sus)

RBSOA AND INDUCTIVE SWITCHING

DRIVER SCHEMATIC

0.005 µF

For inductive loads pulse width

is adjusted to obtain specified IC

HP214

– 38 V

+

10

10 µF

PG

–

IN

50

0.05 µF

2.0 µF

+–

1000

Lcoil = 180 µH

Rcoil = 0.05 Ω

VCC = 20 V

Vclamp = Rated VCEX Value

+ V DRIVE

10

RB

2N3762

10

0.005

MTP3055E

1

2

50

100

MTP3055E

– Voff

DRIVE

RESISTIVE SWITCHING

1

2

IB1

IB1 adjusted to

obtain the forced

hFE desired

TURN–OFF TIME

Use inductive switching

driver as the input to

the resistive test circuit.

VCC = 250 V

RL = 25 Ω

Pulse Width = 25 µs

INDUCTIVE TEST CIRCUIT

OUTPUT WAVEFORMS

TUT

1

INPUT

SEE ABOVE FOR

DETAILED CONDITIONS

2

1N4937

OR

EQUIVALENT

Vclamp

RS =

0.1 Ω

Rcoil

Lcoil

VCC

IC

IC(pk)

t1

VCE

VCE or

Vclamp

TIME

[ tf UNCLAMPED t2

tf CLAMPED

t

tf

t

t2

t1 Adjusted to

Obtain IC

t1 ≈

Lcoil (ICpk)

VCC

t2 ≈

Lcoil (ICpk)

VClamp

Test Equipment

Scope — Tektronix

475 or Equivalent

RESISTIVE TEST CIRCUIT

TUT

1

RL

2

VCC

IC

VCE

IB

ICM

VCEM Vclamp

90% VCEM 90% ICM

tsv

trv

tfi

tti

tc

90% IB1

10% VCEM

10%

ICM 2% IC

TIME

Figure 7. Inductive Switching Measurements

SWITCHING TIMES NOTE

In resistive switching circuits, rise, fall, and storage times

have been defined and apply to both current and voltage wa-

veforms since they are in phase. However, for inductive

loads which are common to SWITCHMODE power supplies

and hammer drivers, current and voltage waveforms are not

in phase. Therefore, separate measurements must be made

on each waveform to determine the total switching time. For

this reason, the following new terms have been defined.

tsv = Voltage Storage Time, 90% IB1 to 10% Vclamp

trv = Voltage Rise Time, 10 – 90% Vclamp

tfi = Current Fall Time, 90 – 10% IC

tti = Current Tail, 10 – 2% IC

tc = Crossover Time, 10% Vclamp to 10% IC

4

Motorola Bipolar Power Transistor Device Data

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