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參數(shù)資料
| 型號： | TNY266PG |
| 英文描述： | 4-23 W TinySwitch-II family of energy efficient. |
| 中文描述： | 4-23糯的TinySwitch -Ⅱ系列高效的能源。 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 200K |
| 代理商： | TNY266PG |
7
TNY264/266-268
C
4/03
Figure 14. 2.5 W Constant Voltage, Constant Current Battery Charger with Universal Input (85-265 VAC).
The
TinySwitch-II
does not require a bias winding to provide
power to the chip, because it draws the power directly from the
DRAIN pin (see Functional Description above). This has two
main benefits. First, for a nominal application, this eliminates
the cost of a bias winding and associated components.
Secondly, for battery charger applications, the current-voltage
characteristic often allows the output voltage to fall close to
zero volts while still delivering power. This type of application
normally requires a forward-bias winding which has many
more associated components. With
TinySwitch-II
, neither are
necessary. For applications that require a very low no-load
power consumption (50 mW), a resistor from a bias winding to
the BYPASS pin can provide the power to the chip. The
minimum recommended current supplied is 750
μ
A. The
BYPASS pin in this case will be clamped at 6.3 V. This method
will eliminate the power draw from the DRAIN pin, thereby
reducing the no-load power consumption and improving full-
load efficiency.
Current Limit Operation
Each switching cycle is terminated when the DRAIN
current
reaches the current limit of the
TinySwitch-II
. Current limit
operation provides good line ripple rejection and relatively
constant power delivery independent of input voltage.
BYPASS Pin Capacitor
The BYPASS pin uses a small 0.1
μ
F ceramic capacitor for
decoupling the internal power supply of the
TinySwitch-II
.
Application Examples
The
TinySwitch-II
is ideal for low cost, high efficiency power
supplies in a wide range of applications such as cellular phone
chargers, PC standby, TV standby, AC adapters, motor control,
appliance control and ISDN or a DSL network termination. The
132 kHz operation allows the use of a low cost EE13 or EF12.6
core transformer while still providing good efficiency. The
frequency jitter in
TinySwitch-II
makes it possible to use a
single inductor (or two small resistors for under 3 W applications
if lower efficiency is acceptable) in conjunction with two input
capacitors for input EMI filtering. The auto-restart function
removes the need to oversize the output diode for short circuit
conditions allowing the design to be optimized for low cost and
maximum efficiency. In charger applications, it eliminates the
need for a second optocoupler and Zener diode for open loop
fault protection. Auto-restart also saves the cost of adding a fuse
or increasing the power rating of the current sense resistors to
survive reverse battery conditions. For applications requiring
under-voltage lock out (UVLO), such as PC standby, the
TinySwitch-II
eliminates several components and saves cost.
TinySwitch-II
is well suited for applications that require
constant voltage and constant current output. As
TinySwitch-II
is always powered from the input high voltage, it therefore
does not rely on bias winding voltage. Consequently this greatly
simplifies designing chargers that must work down to zero volts
on the output.
PI-2706-040903
+ 5 V
500 mA
RTN
D1
1N4005
C1
3.3
F
400 V
Fusible
RF1
8.2
C3
0.1
μ
F
C7
10
μ
F
10 V
85-265
VAC
L1
2.2 mH
D2
1N4005
D3
1N4005
D4
1N4005
R2
200 k
U2
LTV817
D5
1N5819
Shield
L2
3.3
μ
H
C5
330
μ
F
16 V
C2
3.3
F
400 V
C6
100
μ
F
35 V
R7
100
R4
1.2
1/2 W
Q1
2N3904
R8
270
VR1
BZX79-
B3V9
3.9 V
U1
TNY264
C3
2.2 nF
D6
1N4937
R6
1
1/2 W
T1
R1
1.2 k
1
8
4
5
R3
22
R9
47
C8 680 pF
Y1 Safety
TinySwitch-II
D
S
BP
EN/UV
相關PDF資料 |
PDF描述 |
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| TNY267PG | 4-23 W TinySwitch-II family of energy efficient. |
| TNY268PG | 4-23 W TinySwitch-II family of energy efficient. |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TNY266PN | 功能描述:交流/直流開關轉換器 9.5W 85-265 VAC 15W/230 VAC RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開關頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
| TNY266PN-TL | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:Enhanced, Energy Efficient, Low Power Off-line Switcher |
| TNY266PTL | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:Enhanced, Energy Efficient, Low Power Off-line Switcher |
| TNY267 | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:Generic PCB for DVD Player using TinySwitch-II |
| TNY267G | 功能描述:IC OFFLINE SWIT OTP OCP HV 8SMD RoHS:否 類別:集成電路 (IC) >> PMIC - AC-DC 轉換器，離線開關 系列:TinySwitch®-II 標準包裝:1 系列:FPS™ 輸出隔離:隔離 頻率范圍:61kHz ~ 73kHz 輸入電壓:8 V ~ 26 V 輸出電壓:650V 功率（瓦特）:12W 工作溫度:-40°C ~ 115°C 封裝/外殼:8-DIP（0.300"，7.62mm） 供應商設備封裝:8-MDIP 包裝:Digi-Reel® 其它名稱:FSL206MRBNFSDKR |
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