RK73B1JT473 NJRC [New Japan Radio], RK73B1JT473 Datasheet - Page 15

• Manufacturer Part Number: RK73B1JT473
• Description: 30V/4A Half Bridge Driver
• Manufacturer: NJRC [New Japan Radio]

frequency, the substrate (PCB) layout becomes an important.
is generated by parasitic inductance and a high-speed current change of high side and low side SW.
You should attempt the transition voltage decrease by making a current loop area minimize as much as possible.
Therefore, you should make a current flowing line thick and short as much as possible.
over voltage and/or exceed maximum input voltage rating. The recommended bypass capacitor is 1µF or more high
frequency capacitor.
capacitor by sufficient evaluation (assessment) due to load condition and/or application use environment. (There is a
possibility that the supply voltage rises by inductive kickback when the supply current of the inductive load is large.)
The bypass capacitors should be connected as much as possible near VDD terminal.
Ex. Bill of Materials
Ver.2010-09-29
Components
A 100µF aluminum electrolysis capacitor is recommended for smoothing condenser. However, you should use larger
APPLICATION TIPS
In the application that does a high-speed switching of NJW4800, because the current flow corresponds to the input
NJW4800 is driving the High-side/Low-side SW gate with high speed to reduce switching losses. The transient voltage
You should insert a bypass capacitor between VDD terminal and GND terminal to prevent malfunction by generating
C
R
C
C
C
REG
FLT
BS
IN
P
GRM21BB11H104KA01B
GRM31MB31H105KA87B
GRM21BR71H474KA88B
RK73B1JT473
Parts Name
−
Aluminum-Cap.
Ceramic-Cap. 0.1µF, 50V (B-val)
Ceramic-Cap. 1µF, 50V (B-val)
Ceramic-Cap. 0.1µF, 50V (X7R-val)
47kΩ
Functions
Nippon Chemi-con
Manufacturers
Murata
Murata
Murata
NJW4800
KOA
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