ha16163t Renesas Electronics Corporation., ha16163t Datasheet - Page 13

• Manufacturer Part Number: ha16163t
• Description: Synchronous Phase Shift Full-bridge Control Ic
• Manufacturer: Renesas Electronics Corporation.

HA16163T
Oscillator
The oscillation frequency of the oscillator is set by means of a resistance connected between the RT pin and GND. The
following graph shows the relationship between the external resistance and the oscillation frequency. The typical value
of the oscillation frequency is given by the following equation.
Place the resistor for connection to the RT pin as close to the pin as is possible. Please design the pattern so that the
level of cross-talk from other signals is minimized.
Synchronized Operation
Parallel synchronized operation is possible by connecting the SYNC pins of HA16163s. In this case, up to four slave
ICs can be connected to one master IC. A value of at least twice the master RT value should be set for the slave IC RT
values.
Rev.5.0, Mar.15.2004, page 13 of 29
fosc =
30p[F] × RT[ ] + 50[ns]
10000
1000
100
10
10
C
1
SYNC
RT
SYNC pin: open
= 5pF
(2.7V)
Figure 7 Parallel Synchronized Operation
RT
HA16163
MASTER
[Hz]
GND
fosc vs. RT
SYNC
RT (k )
100
Max. 4 slaves
Figure 6
SYNC
SYNC
HA16163
HA16163
1000
SLAVE
SLAVE
GND
GND
RT
RT
(2.7V)
(2.7V)
RT
2*RT
2*RT
(2.7V)
SYNC
RT
HA16163
GND