HA16163T_08 RENESAS [Renesas Technology Corp], HA16163T_08 Datasheet - Page 15

• Manufacturer Part Number: HA16163T_08
• Description: Synchronous Phase Shift Full-Bridge Control IC
• Manufacturer: RENESAS [Renesas Technology Corp]

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
REJ03F0001-0600 Rev.6.00 Jul 01, 2008
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
D3
Cr2
T
3
D1
t3
4
t4
SE
SF
5
t5
L1
L2
VOUT