ha16163t Renesas Electronics Corporation., ha16163t Datasheet - Page 15

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

HA16163T
Synchronous Phase Shift Full-Bridge Control
The HA16163 is provided with full-bridge control outputs OUT-A through OUT-D, and secondary-side synchronous
rectification control outputs OUT-E and OUT-F. ZVS (Zero Voltage Switching) can be performed by adjusting timing
delays T
F have an output timing suitable for secondary-side full-wave rectification, and so can be used in either current doubler
or center tap applications. The following figure shows full-bridge ZVS + current doubler operation using an ideal
model.
• Subinterval:1
Rev.5.0, Mar.15.2004, page 15 of 29
In interval 1, SA and SD are turned on, and VIN is generated on the transformer primary side. On the transformer
secondary side, a value proportional to the winding ratio is generated, and the primary-side power is transmitted to
the load side.
At this time, secondary-side switch SE is off and SF is on.
D1
and T
Full-bridge
control switch
(on when high)
Synchronous
rectification
control switch
(on when high)
Transformer
primary
both-side
voltage
Transformer
secondary
both-side
voltage
D2
between the OUT-A through OUT-D outputs by means of an external resistance. OUT-E and OUT-
RES pulse
(Internal signal)
Cr1
–VIN/N
V11
VIN/N
SA
SB
–VIN
SA
SB
SC
SD
SE
SF
Subinterval:
VIN
0
0
Time:
VIN
Lr
t0
1
Subinterval: 1
t1
Figure 10
SC
V12
SD
2
T
D2
t2
T
Cr2
D3
T
3
D1
t3
4
t4
SE
SF
5
t5
L1
L2
VOUT