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參數資料
| 型號： | TPS55010RTET |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PQCC16 |
| 封裝： | 3 X 3 MM, GREEN, PLASTIC, WQFN-16 |
| 文件頁數： | 5/40頁 |
| 文件大?。?/td> | 1417K |
| 代理商： | TPS55010RTET |
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T1
C
PRI
+
_
D1
+
V
PRI
_
T1
C
PRI
+
_
D1
+
V
PRI
_
D x Ts
(1 - D) x Ts
+
V
O
V
O
_
T1
C
IN
C
IN
C
PRI
VIN
N
PRI
SEC
C
O
C
O
+
V
PRI
_
D1
S
LS
S
LS
S
HS
S
HS
C
IN
C
IN
V
O
C
O
S
LS
S
HS
N
PRI
SEC
N
PRI
SEC
O
SEC
IN
PRI
V
N
=
× D
V
N
PRI
IN
V
= D
V
SLVSAV0A
– APRIL 2011 – REVISED JUNE 2011
During the off time of SHS, SLS conducts and the voltage on CPRI continues to increase during a portion of the SLS
conduction time. The voltage increase is due to the energy transfer from LPRI to CPRI. For the remaining portion of
the SLS conduction time, the CPRI voltage decreases because of current in LPRI reverses; see the ILPRI and VPRI
waveforms in Figure 23. By neglecting the diode voltage drop, conduction dead time and leakage inductance, the
input to output voltage conversion ratio can be derived as shown in Equation 7 from the flux balance in LPRI. It
can be seen in Equation 7 that the input to output relationship is the same as a buck-derived converter with
transformer isolation. The dc voltage VPRI on the primary side capacitor in Equation 8 has the same linear
relationship to the input voltage as a buck converter.
Figure 22.
The small signal model for the Fly-Buck is derived by changing the transformer to the inductor equivalent and
reflecting the output filter to the primary side for the circuit shown in Figure 22. Assuming negligible leakage
inductance and equivalent series resistance for the capacitors, the VPRI transfer function is similar to the current
mode control buck power stage transfer function with the exception that the CO and load are in parallel with the
CPRI only for the 1-D time. Averaging the secondary side components, an approximate transfer function is shown
in Equation 9 and pole location in Equation 10. RO is the secondary side load resistance and the RLM is the dc
resistance of the primary. Ri is the inverse of the Comp to PH gm.
(7)
spacer
(8)
Spacer
Copyright
2011, Texas Instruments Incorporated
13
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS55065EVM | 功能描述:電源管理IC開發(fā)工具 TPS55065EVM Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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| TPS5510D | 制造商:Texas Instruments 功能描述: |
| TPS5510P | 制造商:Texas Instruments 功能描述: |
| TPS5511D | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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