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IRPT3054A
PROVISIONAL
IRPT3054A
TM
Power Module for 5 hp Motor Drives
* 5 hp (3.7 kW) power output
Industrial rating at 150% overload for 1 minute
* * * * * * * * * *
380-480V AC input, 50/60 Hz 3-phase rectifier bridge 3-phase, short circuit rated, ultrafast IGBT inverter HEXFRED ultrafast soft recovery-freewheeling diodes Brake IGBT and diode Low inductance (current sense) shunts in positive and negative DC rail NTC temperature sensor Pin-to-baseplate isolation 2500V rms Easy-to-mount two-screw package Case temperature range -25C to 125C operational
Figure 1. IRPT3054A Power Module
380-480V 3-phase input
IRPT3054A Power Module
PWM variable frequency output
Gate Driver Board feedback (non-isolated)
PWM generator
Figure 2. The IRPT3054 power module within a motor control system
page 1
IRPT3054A
Power Module
The IRPT3054A Power Module shown in figure 1 is a chip and wire epoxy encapsulated module. It houses input rectifiers, output inverter, current sense shunts and NTC thermistor. The 3-phase input bridge rectifiers are rated at 1600V. The brake circuit uses 1200V IGBT and freewheeling diode. The inverter section employs 1200V, short circuit rated, ultrafast IGBTs and ultrafast freewheeling diodes. Current sensing is achieved through 25 m low inductance shunts provided in the positive and negative DC bus rail. The NTC thermistor provides temperature sensing capability. The lead spacing on the power module meets UL840 pollution level 3 requirements. The power circuit and layout within the module are carefully designed to minimize inductance in the power path, to reduce noise during inverter operation and to improve the inverter efficiency. The driver board required to run the inverter can be soldered to the power module pins, thus minimizing assembly and alignment. The power module is designed to be a mounted to a heat sink with two screw mount positions, in order to ensure good thermal contact between the module substrate and the heat sink.
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IRPT3054A
Specifications
PARAMETERS Input Power
Voltage Frequency Current IFSM
VALUES
380V, -15%, 480V +10%, 3-phase 50/60 Hz 11.8A rms @ nominal output 400A 0 - 480V rms 5 hp (3.7 kW) nominal full load power 150% overload for 1 minute 8.4A nominal full load power 12.6A 150% overload for 1 minute
CONDITIONS
TA = 40C, RthSA = 0.51C/W 10 ms half-cycle, non-repetitive surge defined by external PWM control Vin = 440V AC, fpwm = 4 kHz, f0 = 60 Hz, TA = 40C, RthSA = 0.51C/W
Output Power
Voltage Nominal motor hp (kW) Nominal motor current
DC Link
DC link voltage 850V maximum 15.1A 50 kOhms 5% 3.1 kOhms 10% Current sense 25mOhms 5% 5 s 46A peak @ TNTC = 25C @ TNTC = 100C @ TSHUNT = 25C DC Bus = 850V, VGE = 15V, line to line short
Brake
Current
Sensor
Temp. sense resistance
Protection
IGBT short circuit time Recommended short circuitshutdown current
Gate Drive
QG 94 nC (typical) @ VGE = 15V, refer figure 4b
Recommended gate driver
IR2233 (with buffer)
2500V rms -25C to 125C 1 Nm -40C to 125C at the pins (.06" from case) pin to baseplate, 60 Hz, 1 minute 95% RH max. (non-condensing) M4 screw type
Module
Isolation voltage Operating case temperature Mounting torque Storage temperature range
Soldering temperature for 10 sec. 260C maximum
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IRPT3054A
0.8
5 hp (3.7kW)
350
0.7
Thermal Resistance(RthSAC/W)
0.6
250 0.5 200 0.4
Power 150%
150
0.3
Power 100% RthSA 150% load (1 min.)10-60 Hz
100
0.2
0.1
RthSA 150% load (1 min.) down to 3 Hz
50
0 1 4 8 12 16 20 24
0
PWM Frequency (kHz) - (Induction Motor Load) Figure 3. 5 hp/8.4A Output Heat Sink Thermal Resistance and Power Dissipation vs. PWM Frequency
NOTE: For figure 3: Operating Conditions: Vin = 460 Vrms, MI = 1.15, P.F. = 0.8, TA = 40C, Ti < 145C, Ts < 95C, Z thSA limits Tc rise during 1 minute overload to 10C
page 4
Total Power Dissipation (Watt)
RthSA 100% load (continuous) 10-60 Hz
300
IRPT3054A
Figure 4a. Typical Capacitance vs Collector-to-Emitter Voltage
Figure 4b. Typical Gate Charge vs Gate-to-Emitter Voltage
Figure 4c. Typical Transfer Characteristics
Figure 5. Nominal R-T Characteristics of the NTC Thermistor
page 5
IRPT3054A
Mounting, Hookup and Application Instructions
Mounting
1. Connect the driver board and the IRPT3054A module. 2. Remove all particles and grit from the heat sink and power substrate. 3. Spread a .004" to .005" layer of silicone grease on the heat sink, covering the entire area that the power substrate will occupy. Recommended heat sink flatness in .001 inch/inch and Total Indicator Readout (TIR) of .003 inch below substrate. 4. Place the power substrate onto the heat sink with the mounting holes aligned and press it firmly into the silicone grease. 5. Insert the two M4 mounting screws through the PCB and power module and into the heat sink and tighten the screws to 1 Nm torque.
Power Connections
The power module pin designation, function and other details can be obtained from the package outline (figure 7) and circuit diagram (figure 8). 3-phase input connections are made to pins R, S and T and inverter output connections are made to pins U, V and W. Positive DC bus and brake IGBT collector connections are brought out to pins P and BR, respectively. Positive rectifier output and positive inverter bus are brought out to pins RP and P, respectively in order to provide DC bus capacitor soft charging implementation option. The current shunt terminals are connected to pins IS1, IS2 and IS3, IS4 on the positive and negative DC rails, respectively.
Figure 6. Power Module Mounting Screw Sequence
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1
2
IRPT3054A
IRPT3054A Mechanical Specifications
NOTE: Dimensions are in inches (millimeters)
3.854 [97.89] 3.215 [81.66] 31X
HATCHED SURFACE .032 [0.81] .020 [0.51] THICKNESS
RT1 RT2 N/C G3 E3 G5 E5
F
.650 [16.51]
R
N
2.105 [53.47] 1.662 [42.21]
RP P IS1 IS2
G1 E1
2.040 [51.82]
BR
G7 IS4 IS3 G2 E2
G4 E4 G6 E6 N/C
U
S
T
V
W
.307 [7.80] .507 [12.87] HATCHED SURFACE E
Figure 7a.
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IRPT3054A
IRPT3054A Mechanical Specifications
NOTE: Dimensions are in inches (millimeters)
ALL PIN COORDINATE DIMENSIONS ARE BASIC 3.420 [86.87]
1.250 [31.75]
1.350 [34.29]
1.450 [36.83]
1.550 [39.37]
2X O .104 .002 [2.64 0.05] MINUS DRAFT X .400 O .010 G S A B-C
1.550 [39.37]
.650 [16.51]
.550 [13.97]
.450 [11.43]
.450 [11.43]
.750 [19.05]
.050 [ 1.27]
.350 [ 8.89]
.850 [21.59]
.350 [ 8.89]
.050 [ 1.27]
1.020 [25.91] PIN CENTER
2X C .800 [20.32] .400 [10.16]
.187 [4.75] .175 [4.45]
B
.000 [ 0.00]
2X R .250 [6.35] 4X O .260 [6.60] PIN CENTER 1.020 [25.91] PIN DIAGONAL .037 - .034 [.940 - .864] 31X O .019 O .010 31X ( .026 - .024) 31X .050 [1.27] M M E-F E-F G B-C
1.750 [44.45]
1.450 [36.83]
1.050 [26.67]
1.150 [29.21]
1.250 [31.75]
.950 [24.13]
.550 [13.97]
.950 [24.13]
.250 [ 6.35]
.150 [ 3.81]
.000 [ 0.00]
.250 [ 6.35]
HATCHED SURFACE
F
E
HATCHED SURFACE
MOUNTING SURFACE IN CLAMPED CONDITION
A
Figure 7b.
page 8
IRPT3054A
RP P IS1 IS2 E1 G1 E3 G3 E5 G5 RT1 RT2
RS1 D7 D9 D11 D13
Q1
D1
Q3
D3
Q5
D5 RT
R S T
Q7
U V W Q2 D2 Q4 D4 Q6 D6
D8
D10
D12
RS2
N
BR G7
IS4
1S3 G2 E2
G4 E4
G6 E6
Figure 8. Power Module Circuit Diagram
page 9
IRPT3054A
Functional Information
Heat Sink Requirements
Figure 3 shows the thermal resistance of the heat sink required for various output power levels and pulse-width-modulated (PWM) switching frequencies. Maximum total losses of the unit are also shown. This data is based on the following key operating conditions: * The maximum continuous combined losses of the rectifier and inverter occur at full pulse-width-modulation. These losses set the maximum continuous operating temperature of the heat sink. * The maximum combined losses of the rectifier and inverter at full pulse-width modulation under overload set the increment temperature rise of the heat sink during overload. * The minimum output frequency at which full load current is to be delivered, sets the peak IGBT junction temperature. * At low frequency, IGBT junction temperature tends to follow the instantaneous fluctuations of the output current. Thus, peak junction temperature rise increases as output frequency decreases.
Over-Temperature Protection
Over-temperature can be detected using the NTC thermistor included in the power module for thermal sensing. A protection circuit that initiates a shutdown if the temperature of the IMS exceeds a set level can be implemented. The nominal resistance vs. temperature characteristic of the thermistor is given in figure 5.
Voltage Rise During Braking
The motor will feed energy back to the DC link during regenerative braking, forcing the bus voltage to rise above the level defined by the input voltage. Deceleration of the motor must be controlled by appropriate PWM control to keep the DC bus voltage within the rated maximum value. For high inertial loads, or for very fast deceleration rates, this can be achieved by connecting an external braking resistor across P and BR and controlling the brake IGBT switching when the bus voltage exceeds the allowable limit.
page 10
IRPT3054A
Part Number Identification and Ordering Instructions
IRPT3054A Power Module
Chip and wire epoxy encapsulated module with 1600V input rectifiers, 1200V brake IGBT and freewheeling diode, 1200V short-circuit rated, ultrafast IGBT inverter with ultrafast freewheeling diodes. NTC temperature sensing thermistor and current sensing low-inductance shunts.
page 11
IRPT3054A
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331 EUROPEAN HEADQUARTERS: Hurst Green, Oxted, Surrey RH8 9BB, UK Tel: ++ 44 1883 732020 IR CANADA: 7321 Victoria Park Ave., Suite 201, Markham, Ontario L3R 2Z8, Tel: (905) 475 1897 IR GERMANY: Saalburgstrasse 157, 61350 Bad Homburg Tel: ++ 49 6172 96590 IR ITALY: Via Liguria 49, 10071 Borgaro, Torino Tel: ++ 39 11 451 0111 IR FAR EAST: 171 (K&H Bldg.), 3-30-4 Nishi-ikebukuro 3-Chome, Toshima-ku, Tokyo Japan Tel: 81 3 3983 0086 IR SOUTHEAST ASIA: 315 Outram Road, #10-02 Tan Boon Liat Building, Singapore 0316 Tel: 65 221 8371 http://www.irf.com/ Data and specifications subject to change without notice. 7/97
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