參數(shù)資料
型號(hào)： HA16163T
廠商： Renesas Technology Corp.
英文描述： Synchronous Phase Shift Full-Bridge Control IC
中文描述： 同步移相全橋控制IC
文件頁(yè)數(shù)： 15/30頁(yè)
文件大?。?/td> 294K
代理商： HA16163T
HA16163T
Rev.5.0, Mar.15.2004, page 15 of 29
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
D1
and T
D2
between the OUT-A through OUT-D outputs by means of an external resistance. OUT-E and OUT-
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.
T
D1
T
D3
T
D2
VIN
0
–VIN
0
VIN/N
–VIN/N
1
t0
Subinterval:
Time:
t5
t4
t3
t2
t1
2
3
4
5
RES pulse
(Internal signal)
SA
SB
SC
SD
SE
SF
Transformer
primary
both-side
voltage
Transformer
secondary
both-side
voltage
Synchronous
rectification
control switch
(on when high)
Full-bridge
control switch
(on when high)
Figure 10
Subinterval:1
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.
SC
SD
SE
SF
V12
VOUT
SA
Lr
L1
L2
SB
Cr1
Cr2
V11
VIN
Subinterval: 1
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