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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 20/30頁 |
| 文件大?。?/td> | 294K |
| 代理商： | HA16163T |
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HA16163T
Rev.5.0, Mar.15.2004, page 20 of 29
Application
Note: All voltage, current, time shown in the diagram are typical value.
Sample application circuits are given here. Confirmatory experiments should be carried out when applying these
examples to products.
Slope Compensation
In order to improve the unstable operation characteristic of current mode, voltage slopes in a current sense signal can be
superimposed. The following is a possible slope compensation method.
RAMP
Comparator
+
0.4V
Compensated signal
5V(VREF)
RES
HA16163
R
S
Q
OUT-B
OUT-C
OUT-A
OUT-D
Current sense signal
Figure 12
Driving a Pulse Transformer
OUT-A through OUT-F of this IC are CMOS outputs that use Vref as their power supply. When directly driving a
pulse transformer, the Vref voltage fluctuates according to the exciting current. As Vref fluctuation may make internal
circuit operation unstable, direct drive of a pulse transformer should be avoided.
Case 1 (NG)
The figure below shows a case where a pulse transformer is driven directly. Vref voltage fluctuation occurs due to
the exciting current.
OUT-E
Vref value fluctuates due to
this exiting current
HA16163
Vref
Internal
Circuitry
Cref
Case 1 (NG)
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