IRPT2051A International Rectifier Corp., IRPT2051A Datasheet - Page 7

• Manufacturer Part Number: IRPT2051A
• Manufacturer: International Rectifier Corp.

Mounting, Hookup and Application Instructions
Mounting
substrate.
sink, covering the entire area that the power substrate will oc-
cupy. Recommended heat sink flatness is .001 inch/inch and
Total Indicator Readout (TIR) of .003" below substrate.
mounting holes aligned and press it firmly into the silicone
grease.
power module and into the heat sink and tighten the screws to
1 Nm torque.
Control Connections
All input and output connections are made via a 16-terminal fe-
male connector to J6.
1. Remove all particles and grit from the heat sink and power
2. Spread a .004" to .005" layer of silicone grease on the heat
3. Place the power substrate onto the heat sink with the
4. Place the 2 M4 mounting screws through the PCB and
Figure 6. Power Assembly Mounting Screw Sequence
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2
Figure 7a. Control Signal Connector
1
2
Power Connections
3-phase input connections are made to terminals R, S and T (J1).
Inverter output terminal connections are made to terminals U, V
and W (J7).
Positive DC bus and Brake IGBT collector connections are
brought out to terminals P (positive) and BR (brake) of J5 con-
nector. An external resistor for braking can be connected across
these terminals.
Power-Up Procedure
When 3-phase input power is first switched on, PWM inputs to
the IRPT2051 must be inhibited (held high) until the protection
latch circuitry is reset. To reset this latch before inverter start-
up, RESET pin on J6 connector must be pulled down low for at
least 2 µsec. This will set the FAULT feedback signal high.
Now, the PWM input signals can be applied for inverter start-up.
Power-Down Procedure
The following sequence is recommended for normal power
down:
1. reduce motor speed by PWM control
2. inhibit PWM inputs
3. disconnect main power.
Figure 7b. Input and Output Terminal Blocks
IRPT2051
page 7