Motorola TMOS Power MOSFET Transistor Device Data

Designer's

Data Sheet

HDTMOS E-FET

High Density Power FET

DPAK for Surface Mount

NChannel EnhancementMode Silicon Gate

This advanced HDTMOS power FET is designed to withstand

high energy in the avalanche and commutation modes. This new
energy efficient design also offers a draintosource diode with a
fast recovery time. Designed for low voltage, high speed switching
applications in power supplies, converters and PWM motor
controls, these devices are particularly well suited for bridge circuits
where diode speed and commutating safe operating areas are
critical and offer additional safety margin against unexpected
voltage transients.

Avalanche Energy Specified

SourcetoDrain Diode Recovery Time Comparable to a Dis-
crete Fast Recovery Diode

Diode is Characterized for Use in Bridge Circuits

IDSS and VDS(on) Specified at Elevated Temperature

Surface Mount Package Available in 16 mm, 13inch/2500
Unit Tape & Reel, Add T4 Suffix to Part Number

MAXIMUM RATINGS

(TC = 25

C unless otherwise noted)

Rating

Symbol

Value

Unit

DrainSource Voltage

VDSS

Vdc

DrainGate Voltage (RGS = 1.0 M

)

VDGR

Vdc

GateSource Voltage -- Continuous

GateSource Voltage

-- NonRepetitive (tp

10 ms)

VGS

VGSM

Vdc
Vpk

Drain Current -- Continuous

Drain Current

-- Continuous @ 100

Drain Current

-- Single Pulse (tp

ID
ID

IDM

20
16
60

Adc

Apk

Total Power Dissipation

Derate above 25

Total Power Dissipation @ TC = 25

C, when mounted with the minimum recommended pad size

0.6

1.75

Watts

Operating and Storage Temperature Range

TJ, Tstg

55 to 150

Single Pulse DraintoSource Avalanche Energy -- Starting TJ = 25

(VDD = 25 Vdc, VGS = 5.0 Vdc, Peak IL = 20 Apk, L = 1.0 mH, RG = 25

)

EAS

200

Thermal Resistance -- Junction to Case

Thermal Resistance

-- Junction to Ambient

Thermal Resistance

-- Junction to Ambient, when mounted with the minimum recommended pad size

1.67

100

71.4

C/W

Maximum Lead Temperature for Soldering Purposes, 1/8

from case for 10 seconds

260

Designer's Data for "Worst Case" Conditions -- The Designer's Data Sheet permits the design of most circuits entirely from the information presented. SOA Limit
curves -- representing boundaries on device characteristics -- are given to facilitate "worst case" design.

Designer's, EFET, and HDTMOS are trademarks of Motorola, Inc. TMOS is a registered trademark of Motorola, Inc.
Thermal Clad is a trademark of the Bergquist Company.

Preferred devices are Motorola recommended choices for future use and best overall value.

REV 1

Order this document

by MTD20N03HDL/D

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Motorola, Inc. 1995

MTD20N03HDL

TMOS POWER FET

LOGIC LEVEL

20 AMPERES

30 VOLTS

RDS(on) = 0.035 OHM

Motorola Preferred Device

CASE 369A13, Style 2

DPAK

MTD20N03HDL

Motorola TMOS Power MOSFET Transistor Device Data

ELECTRICAL CHARACTERISTICS

(TJ = 25

C unless otherwise noted)

Characteristic

Symbol

Min

Typ

Max

Unit

OFF CHARACTERISTICS

DraintoSource Breakdown Voltage

(Cpk

2.0) (3)

(VGS = 0 Vdc, ID = 250

Adc)

Temperature Coefficient (Positive)

V(BR)DSS

--
--

Vdc

mV/

Zero Gate Voltage Drain Current

(VDS = 30 Vdc, VGS = 0 Vdc)
(VDS = 30 Vdc, VGS = 0 Vdc, TJ = 125

IDSS

--
--

100

Adc

GateBody Leakage Current

(VGS =

15 Vdc, VDS = 0 Vdc)

IGSS

100

nAdc

ON CHARACTERISTICS (1)

Gate Threshold Voltage

(Cpk

2.0) (3)

(VDS = VGS, ID = 250

Adc)

Threshold Temperature Coefficient (Negative)

VGS(th)

1.0

1.5
5.0

2.0

Vdc

mV/

Static DraintoSource OnResistance

(Cpk

2.0) (3)

(VGS = 4.0 Vdc, ID = 10 Adc)
(VGS = 5.0 Vdc, ID = 10 Adc)

RDS(on)

0.034
0.030

0.040
0.035

Ohm

DraintoSource OnVoltage (VGS = 5.0 Vdc)

(ID = 20 Adc)
(ID = 10 Adc, TJ = 125

VDS(on)

--
--

0.55

0.8
0.7

Vdc

Forward Transconductance

(VDS = 5.0 Vdc, ID = 10 Adc)

gFS

mhos

DYNAMIC CHARACTERISTICS

Input Capacitance

(VDS = 25 Vdc, VGS = 0 Vdc,

f = 1.0 MHz)

Ciss

880

1260

Output Capacitance

(VDS = 25 Vdc, VGS = 0 Vdc,

f = 1.0 MHz)

Coss

300

420

Transfer Capacitance

f = 1.0 MHz)

Crss

112

SWITCHING CHARACTERISTICS (2)

TurnOn Delay Time

(VDD = 15 Vdc, ID = 20 Adc,

VGS = 5.0 Vdc,

RG = 9.1

)

td(on)

15.8

Rise Time

(VDD = 15 Vdc, ID = 20 Adc,

VGS = 5.0 Vdc,

RG = 9.1

)

212

238

TurnOff Delay Time

VGS = 5.0 Vdc,

RG = 9.1

)

td(off)

Fall Time

G = 9.1

)

Gate Charge

(See Figure 8)

(VDS = 24 Vdc, ID = 20 Adc,

VGS = 5.0 Vdc)

13.4

18.9

(See Figure 8)

(VDS = 24 Vdc, ID = 20 Adc,

VGS = 5.0 Vdc)

3.0

(VDS = 24 Vdc, ID = 20 Adc,

VGS = 5.0 Vdc)

7.3

6.0

SOURCEDRAIN DIODE CHARACTERISTICS

Forward OnVoltage

(Cpk

2.0) (3)

(IS = 20 Adc, VGS = 0 Vdc)

(IS = 20 Adc, VGS = 0 Vdc, TJ = 125

VSD

--
--

0.95
0.87

1.1

Vdc

Reverse Recovery Time

(See Figure 15)

(IS = 20 Adc, VGS = 0 Vdc,

dIS/dt = 100 A/

trr

(See Figure 15)

(IS = 20 Adc, VGS = 0 Vdc,

dIS/dt = 100 A/

(IS = 20 Adc, VGS = 0 Vdc,

dIS/dt = 100 A/

Reverse Recovery Stored Charge

QRR

INTERNAL PACKAGE INDUCTANCE

Internal Drain Inductance

(Measured from the drain lead 0.25

from package to center of die)

4.5

Internal Source Inductance

(Measured from the source lead 0.25

from package to source bond pad)

7.5

(1) Pulse Test: Pulse Width

300

s, Duty Cycle

2%.

(2) Switching characteristics are independent of operating junction temperature.
(3) Reflects typical values. Cpk = Absolute Value of Spec (SpecAVG/3.516

A).

MTD20N03HDL

Motorola TMOS Power MOSFET Transistor Device Data

TYPICAL ELECTRICAL CHARACTERISTICS

DS(on)

, DRAINT

OSOURCE RESIST

ANCE

(NORMALIZED)

DS(on)

, DRAINT

OSOURCE RESIST

ANCE (OHMS)

DS(on)

, DRAINT

OSOURCE RESIST

ANCE (OHMS)

I DSS

, LEAKAGE (nA)

VDS, DRAINTOSOURCE VOLTAGE (Volts)

TJ, JUNCTION TEMPERATURE (

ID, DRAIN CURRENT (Amps)

VDS, DRAINTOSOURCE VOLTAGE (Volts)

VGS, GATETOSOURCE VOLTAGE (Volts)

I D

, DRAIN CURRENT

(AMPS)

I D

, DRAIN CURRENT

(AMPS)

0.4

0.8

1.2

1.6

2.0

0.2

0.6

1.0

1.4

1.8

Figure 1. OnRegion Characteristics

Figure 2. Transfer Characteristics

0.020

0.028

0.036

0.044

0.052

0.020

0.028

0.036

Figure 3. OnResistance versus Drain Current

and Temperature

Figure 4. OnResistance versus Drain Current

and Gate Voltage

0.6

0.8

1.0

1.2

1.8

1000

Figure 5. OnResistance Variation with

Temperature

Figure 6. DrainToSource Leakage

Current versus Voltage

VGS = 10 V

8 V

6 V

2.5 V

3 V

TJ = 25

4 V

1.0

1.8

2.6

3.4

4.6

4.2

5.0

VDS

10 V

100

VGS = 5 V

0.032

0.024

100

125

150

1.4

VGS = 0 V

TJ = 125

TJ = 55

TJ = 100

TJ = 25

VGS = 5 V

10 V

VGS = 5 V
ID = 10 A

1.4

2.2

3.0

3.8

100

3.5 V

4.5 V

5 V

1.6

MTD20N03HDL

Motorola TMOS Power MOSFET Transistor Device Data

POWER MOSFET SWITCHING

Switching behavior is most easily modeled and predicted

by recognizing that the power MOSFET is charge controlled.
The lengths of various switching intervals (

t) are deter-

mined by how fast the FET input capacitance can be charged
by current from the generator.

The published capacitance data is difficult to use for calculat-
ing rise and fall because draingate capacitance varies
greatly with applied voltage. Accordingly, gate charge data is
used. In most cases, a satisfactory estimate of average input
current (IG(AV)) can be made from a rudimentary analysis of
the drive circuit so that

t = Q/IG(AV)
During the rise and fall time interval when switching a resis-
tive load, VGS remains virtually constant at a level known as
the plateau voltage, VSGP. Therefore, rise and fall times may
be approximated by the following:

tr = Q2 x RG/(VGG VGSP)
tf = Q2 x RG/VGSP
where

VGG = the gate drive voltage, which varies from zero to VGG
RG = the gate drive resistance
and Q2 and VGSP are read from the gate charge curve.
During the turnon and turnoff delay times, gate current is
not constant. The simplest calculation uses appropriate val-
ues from the capacitance curves in a standard equation for
voltage change in an RC network. The equations are:

td(on) = RG Ciss In [VGG/(VGG VGSP)]
td(off) = RG Ciss In (VGG/VGSP)

The capacitance (Ciss) is read from the capacitance curve at
a voltage corresponding to the offstate condition when cal-
culating td(on) and is read at a voltage corresponding to the
onstate when calculating td(off).

At high switching speeds, parasitic circuit elements com-

plicate the analysis. The inductance of the MOSFET source
lead, inside the package and in the circuit wiring which is
common to both the drain and gate current paths, produces a
voltage at the source which reduces the gate drive current.
The voltage is determined by Ldi/dt, but since di/dt is a func-
tion of drain current, the mathematical solution is complex.
The MOSFET output capacitance also complicates the
mathematics. And finally, MOSFETs have finite internal gate
resistance which effectively adds to the resistance of the
driving source, but the internal resistance is difficult to mea-
sure and, consequently, is not specified.

The resistive switching time variation versus gate resis-

tance (Figure 9) shows how typical switching performance is
affected by the parasitic circuit elements. If the parasitics
were not present, the slope of the curves would maintain a
value of unity regardless of the switching speed. The circuit
used to obtain the data is constructed to minimize common
inductance in the drain and gate circuit loops and is believed
readily achievable with board mounted components. Most
power electronic loads are inductive; the data in the figure is
taken with a resistive load, which approximates an optimally
snubbed inductive load. Power MOSFETs may be safely op-
erated into an inductive load; however, snubbing reduces
switching losses.

GATETOSOURCE OR DRAINTOSOURCE VOLTAGE (Volts)

C, CAP

ACIT

ANCE (pF)

Figure 7. Capacitance Variation

2800

2000

1200

400

VGS

VDS

1600

800

2400

VDS = 0 V

Ciss

Crss

VGS = 0 V

Ciss

Coss

Crss

TJ = 25

MTD20N03HDL

Motorola TMOS Power MOSFET Transistor Device Data

QG, TOTAL GATE CHARGE (nC)

RG, GATE RESISTANCE (Ohms)

TIME (ns)

, DRAINT

OSOURCE VOL

T
AGE (VOL

TS)

, GA

TET

OSOURCE VOL

T
AGE (VOL

TS)

Figure 8. GateToSource and DrainToSource

Voltage versus Total Charge

100

1000

100

VDD = 15 V
ID = 20 A
VGS = 5.0 V
TJ = 25

td(on)

td(off)

Figure 9. Resistive Switching Time

Variation versus Gate Resistance

VGS

ID = 20 A
TJ = 25

VDS

DRAINTOSOURCE DIODE CHARACTERISTICS

The switching characteristics of a MOSFET body diode

are very important in systems using it as a freewheeling or
commutating diode. Of particular interest are the reverse re-
covery characteristics which play a major role in determining
switching losses, radiated noise, EMI and RFI.

System switching losses are largely due to the nature of

the body diode itself. The body diode is a minority carrier de-
vice, therefore it has a finite reverse recovery time, trr, due to
the storage of minority carrier charge, QRR, as shown in the
typical reverse recovery wave form of Figure 12. It is this
stored charge that, when cleared from the diode, passes
through a potential and defines an energy loss. Obviously,
repeatedly forcing the diode through reverse recovery further
increases switching losses. Therefore, one would like a
diode with short trr and low QRR specifications to minimize
these losses.

The abruptness of diode reverse recovery effects the

amount of radiated noise, voltage spikes, and current ring-
ing. The mechanisms at work are finite irremovable circuit
parasitic inductances and capacitances acted upon by high

di/dts. The diode's negative di/dt during ta is directly con-
trolled by the device clearing the stored charge. However,
the positive di/dt during tb is an uncontrollable diode charac-
teristic and is usually the culprit that induces current ringing.
Therefore, when comparing diodes, the ratio of tb/ta serves
as a good indicator of recovery abruptness and thus gives a
comparative estimate of probable noise generated. A ratio of
1 is considered ideal and values less than 0.5 are considered
snappy.

Compared to Motorola standard cell density low voltage

MOSFETs, high cell density MOSFET diodes are faster
(shorter trr), have less stored charge and a softer reverse re-
covery characteristic. The softness advantage of the high
cell density diode means they can be forced through reverse
recovery at a higher di/dt than a standard cell MOSFET
diode without increasing the current ringing or the noise gen-
erated. In addition, power dissipation incurred from switching
the diode will be less due to the shorter recovery time and
lower switching losses.

I S

, SOURCE CURRENT

(AMPS)

VSD, SOURCETODRAIN VOLTAGE (Volts)

0.50

0.70

0.90

Figure 10. Diode Forward Voltage versus Current

0.60

0.80

VGS = 0 V
TJ = 25

1.0

0.65

0.85

0.55

0.75

0.95

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: MTD20N03HDL

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: MTD20N03HDL