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參數(shù)資料
| 型號(hào)： | AN8013SH |
| 廠商： | PANASONIC CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Single-channel step-up or step-down DC-DC converter control IC |
| 中文描述： | 0.1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | SSOP-10 |
| 文件頁(yè)數(shù)： | 10/15頁(yè) |
| 文件大?。?/td> | 125K |
| 代理商： | AN8013SH |
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AN8013SH
Voltage Regulators
10
I
Application Notes (continued)
[3] Triangular wave oscillation circuit
1. Setting the oscillator frequency
The waveform of triangular wave oscillation is obtained by charging and discharging of the constant current
I
O
from the external timing capacitor C
T
which is connected to CT pin (pin 3). The constant current is set by the
externally attached timing resistor R
T
.
The peak value of the wave V
CTH
and the trough value of the wave V
CTL
are fixed at about 1.45 V typical and
0.35 V typical respectively.
The oscillator frequency f
OSC
is obtained by the following formula:
1
=
t
1
+
t
2
2
×
C
T
×
(V
CTH
V
CHL
)
f
OSC
=
I
O
whereas I
O
=
1.8
×
V
RT
=
1.8
×
R
T
0.59
R
T
because
V
CTH
V
CTL
=
1.1 V
f
OSC
=
1
[Hz]
2.07
×
C
T
×
R
T
The output frequency f
OUT
is equal to f
OSC
since it is PWM-controlled.
2. Usage notes
This IC uses the constant current given by the timing resistor R
T
as the bias current of the triangular wave
generator and the PWM comparator for consumption current reduction. The total consumption current is about 2.4
mA typical when R
T
is 15 k
, and it increases to about 3.4 mA typical when R
T
is 5.1 k
. In order to obtain the
constant output current of 100 mA at the open-collector output, it is necessary to set R
T
value to 15 k
or smaller.
It is possible to use the circuit in the recommended operating range of 20 kHz to 500 kHz of the oscillator
frequency. As the AN8013SH is used at increasingly higher frequencies, the amount of overshoot and undershoot
due to the operation delay in the triangular wave oscillator comparator increases, and discrepancies between the
values calculated as described previously and the actual values may occur. See the timing capacitance - oscillator
frequency relationship in the "Application Notes, [1] Main characteristics" section of this document.
Note that this IC can not be used as an IC for slave when the several ICs are operated in parallel synchronous
mode.
[4] Setting the dead-time (maximum duty)
The dead-time is set, as shown in figure 4, by setting the DTC pin (pin 5) voltage, V
DTC
. Since the DTC pin
has a constant current output set with the resistor R
T
, V
DTC
is adjusted by adding the external resistor R
DTC
. The
output duty, Du, and the DTC pin voltage, V
DTC
, are expressed by the following formulas. For an oscillator
frequency of 200 kHz, the output duty will be 0% at V
DTC
= 0.45 V, and 100% at V
DTC
= 1.45 V. However, care
is required here, since the amount of overshoot and undershoot in the triangular wave peak (V
CTH
) and minimum
(V
CTL
) values depends on the oscillator frequency.
t
2
t
1
T
V
CTH
=
1.4 V typ.
V
CTL
=
0.37 V typ.
Figure 3. Triangular wave oscillation waveform
Charging Discharging
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| AN8013SH-E1 | 功能描述:IC REG BUCK BST ADJ 0.1A 10SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 產(chǎn)品培訓(xùn)模塊:High Efficiency Current Mode Switching Regulators CMOS LDO Regulators 特色產(chǎn)品:BD91x Series Step-Down Regulators 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:兩者兼有 輸出數(shù):2 輸出電壓:3.3V，0.8 V ~ 2.5 V 輸入電壓:4.5 V ~ 5.5 V PWM 型:電流模式 頻率 - 開(kāi)關(guān):1MHz 電流 - 輸出:1.5A 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤(pán) 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:VQFN020V4040 產(chǎn)品目錄頁(yè)面:1373 (CN2011-ZH PDF) 其它名稱:BD9152MUV-E2TR |
| AN8013SH-E1V | 功能描述:IC REG BUCK BST ADJ 0.1A 10SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 產(chǎn)品培訓(xùn)模塊:High Efficiency Current Mode Switching Regulators CMOS LDO Regulators 特色產(chǎn)品:BD91x Series Step-Down Regulators 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:兩者兼有 輸出數(shù):2 輸出電壓:3.3V，0.8 V ~ 2.5 V 輸入電壓:4.5 V ~ 5.5 V PWM 型:電流模式 頻率 - 開(kāi)關(guān):1MHz 電流 - 輸出:1.5A 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤(pán) 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:VQFN020V4040 產(chǎn)品目錄頁(yè)面:1373 (CN2011-ZH PDF) 其它名稱:BD9152MUV-E2TR |
| AN8014 | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:Step-down, step-up, or inverting DC-DC converter control IC |
| AN8014S | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:Step-down, step-up, or inverting DC-DC converter control IC |
| AN8014S-E1 | 功能描述:IC REG CTRLR BST INV PWM SO16 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:100% 電源電壓:8.2 V ~ 30 V 降壓:無(wú) 升壓:無(wú) 回掃:是 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:是 工作溫度:0°C ~ 70°C 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 產(chǎn)品目錄頁(yè)面:1316 (CN2011-ZH PDF) |
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