FSB50250UD datasheet(5/9 Pages) FAIRCHILD

Part #	FSB50250UD

Description	Smart Power Module (SPM짰)

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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FSB50250UD Rev. A

Recommended Operating Conditions

Note:

(1) It is recommended the bootstrap diode D1 to have soft and fast recovery characteristics with 500-V rating

(2) Parameters for bootsrap circuit elements are dependent on PWM algorithm. For 15 kHz of switching frequency, typical example of parameters is shown above.

(3) RC coupling(R5 and C5) at each input (indicated as dotted lines) may be used to prevent improper input signal due to surge noise. Signal input of SPM®is compatible with

standard CMOS or LSTTL outptus.

(4) Bold lines should be short and thick in PCB pattern to have small stray inductance of circuit, which results in the reduction of surge voltage. Bypass capacitors such as C1, C2

and C3 should have good high-frequency characteristics to absorb high-frequency ripple current.

Figure 3. Recommended CPU Interface and Bootstrap Circuit with Parameters

Note:

Attach the thermocouple on top of the heatsink-side of SPM® (between SPM® and heatsink if applied) to get the correct temperature measurement.

Figure 4. Case Temperature Measurement

Symbol

Parameter

Conditions

Value

Units

Min.

Typ.

Max.

VPN

Supply Voltage

Applied between P and N

-

300

400

V

VCC

Control Supply Voltage

Applied between VCC and COM

13.5

15

16.5

V

VBS

High-side Bias Voltage

Applied between VB and output(U, V, W)

13.5

15

16.5

V

VIN(ON)

Input ON Threshold Voltage

Applied between IN and COM

3.0

-

VCC

V

VIN(OFF) Input OFF Threshold Voltage

0

-

0.6

V

tdead

Blanking Time for Preventing

Arm-short

VCC=VBS=13.5 ~ 16.5V, TJ £ 150°C

1.0

-

ms

fPWM

PWM Switching Frequency

TJ £ 150°C

-

15

-

kHz

COM

VCC

LIN

HIN

VB

HO

VS

LO

P

N

R3

Inverter

Output

C3

R1

D1

C1

R2

Micom

15-V Line

10

mF

One-Leg Diagram of SPM

These values depend on PWM

control algorithm

* Example of bootstrap paramters:

C1 = C2 = 1mF ceramic capacitor,

R1 = 56W, R2 = 20W

R5

C5

HIN

LIN

VDC

0

1

0

1

Open

Output

Z

0

VDC

Forbidden

Z

Note

Both FRFET Off

Low-side FRFET On

High-side FRFET On

Shoot-through

Same as (0, 0)

C2

3.80

14.50

MOSFET

Case Temperature (Tc)

Detecting Point

3.80

14.50

MOSFET

Case Temperature (Tc)

Detecting Point

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