IRS20954STRPBF International Rectifier, IRS20954STRPBF Datasheet - Page 18

• Manufacturer Part Number: IRS20954STRPBF
• Description: IC DVR DGTL AUDIO PROT 16-SOIC
• Manufacturer: International Rectifier
• Type: MOSFET Driverr

Specifications of IRS20954STRPBF

• Applications: Amplifiers, Receivers
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 1 shows suggested values of resistance for setting the deadtime. Resistors with up to 5% tolerance can be used if these
listed values are followed.
Power Supply Considerations
V
I
The resistance of R
In case of 400 kHz average PWM switching frequency, the required I
voltage yields R
Make sure I
input.
www.irf.com
Rdd
I
DD
DDZ
DD
= 1.5 mA x 300 x 10
is designed to be supplied with the internal zener diode clamp. V
≤
≥
V
V
+
+
B
Supplying V
B
−
Rdd
I
−
DD
10
DD
(Dynamic power consumption)
10
8 .
is below the maximum zener diode bias current, I
8 .
V
dd
V
=33 kΩ.
−
[Ω]
dd
0
5 .
to feed this I
DD
mA
-9
x switching frequency + 0.5 mA + 0.5 mA
Not recommended for new designs.
DD
Table 1: Suggested Resistor Values for Deadtime Settings
Please use IRS20957SPBF.
Deadtime
therefore is:
mode
DT1
DT2
DT3
DT4
(Static) (zener bias)
>0.5mA
<10 kΩ
5.6 kΩ
8.2 kΩ
Open
R6
Figure 17: External Resistor
R6
R7
DDZ,
<10 kΩ kΩ
Vcc
COM
4.7 kΩ
3.3 kΩ
Open
at static state conditions such as a condition with no PWM
DT
R7
DD
DD
IRS20954
supply current I
is 1.18 mA. A condition using 50 V power supply
0.46(V
0.29(V
voltage
DT/SD
COM
(V
cc
)
DD
cc
cc
)
)
can be estimated by:
IRS20954SPBF
18