- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370147 > FAN800D2TF Servo Motor Controller/Driver PDF資料下載
參數(shù)資料
| 型號(hào)： | FAN800D2TF |
| 英文描述： | Servo Motor Controller/Driver |
| 中文描述： | 伺服電機(jī)控制器/驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 79/191頁(yè) |
| 文件大?。?/td> | 2018K |
| 代理商： | FAN800D2TF |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)當(dāng)前第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)
FAN5201
9
P
When the current-sense amplifier is in control of the PWM,
the comparator adjusts the duty cycle of the switches, regu-
lating the average battery current and keeping it proportional
to the error voltage. The current is averaged, rather than
peak, since the current sense resistor is between the output
capacitor and the battery. Since the average battery current is
nearly the same as the peak current, the controller acts as a
transconductance amplifier, reducing the effect of the inductor
on the output filter LC formed by the output inductor and the
output capacitance. This makes stabilizing the circuit easy, since
the output filter changes from a complex second-order RLC
to a first-order RC. To preserve the inner current-control
loop’s stability, slope compensation is also fed into the com-
parator. This damps out perturbations in the pulse width at
duty ratios greater than 50%. At heavy loads, the PWM con-
troller switches at a fixed frequency and modulates the duty
cycle to control the battery current. At light loads, the DC
current through the inductor is not sufficient to prevent the
current from going negative through the synchronous rectifier
(Figure 2, Q4). The controller monitors the current through
the sense resistor; when it drops to below 200mA, the syn-
chronous rectifier turns off to prevent negative current flow.
When the voltage error amplifier is in control of the PWM,
the comparator adjusts the duty cycle of the switches, regu-
lating the battery voltage and keeping it proportional to the
error voltage. In this mode, the control loop is a standard
voltage-mode control, and the only requirement to guarantee
stability is that the loop gain be rolled off below 0dB before
the LC resonant frequency.
When the power error amplifier is in control of the PWM,
the comparator adjusts the duty cycle of the switches, regu-
lating the total power drawn from the charger. The loop
determines whether the total power available from the wall
adapter is sufficient to provide both the load and battery
charging needs. If not, the charging power to the battery is
reduced by the amount needed to keep the total demand
within the AC-DC output power limit of the adapter.
The PWM controller also implements voltage feedforward.
This means that the gain of the control loops are adjusted
inversely proportionally to the input voltage: as the input
voltage increases, loop gain is decreased. This improves the
audio susceptibility of the converter, and in particular, means
that the bandwidth of each of the loops is relatively indepen-
dent of the AC adapter voltage. Feedforward is accomplished
by modulating the amplitude of the ramp signal.
MOSFET Drivers
The FAN5201 drives external MOSFETs to regulate battery
voltage or current, a high-side P-channel and a low-side
N-channel for synchronous rectification. Use of a P-channel
MOSFET for the high-side switch permits operation without
charge-pumping and its attendant external components. The
synchronous rectifier behaves like a diode, but with a smaller
voltage drop to improve efficiency. A small dead time is
added between the time that the high-side MOSFET turns off
and the synchronous rectifier turns on, and vice versa. This
prevents shootthrough currents (currents that flow through
both MOSFETs during the brief time that one is turning on
and the other is turning off). A schottky rectifier from the
source to the drain of Q4 prevents the synchronous rectifier’s
body diode from conducting. The body diode typically has
slower switching-recovery times, so allowing it to conduct
would degrade efficiency.
Control and Reference Functions
The FAN5201 has a number of additional analog functions
to enhance overall system performance. The ACAV is an
open collector signal that can be used to determine the pres-
ence of the AC charger; its threshold is set by an external
resistor divider attached the Vth pin.
A 5V keep alive linear regulator receives power either from
the AC adapter via Q1 or from the battery (PSIN pin). This
regulator can provide up to 10mA to power memory during
a system shutdown.
Protection Circuitry
The FAN5201 protects against a variety of possible fault or
problem conditions.
Input Protection
Inrush current can be a problem during hot plug-in if in front
of the switching regulator a large capacitor is used to decouple
noise. Conceivably, the inrush could be high enough to trip
on overcurrent protection in the AC adapter. The FAN5201
provides the means for limiting inrush current to any desired
value: The SSIN/ILIM pin provides a sink current of 65μA
maximum to turn on the gate of the P-channel MOSFET Q1,
so that selecting a gate-source capacitance on Q1 will slow its
turn-on time to any desired speed, thus restricting the amount
of inrush current.
The charger has its own local soft start, which controls the
maximum duty cycle of the PWM. The softstart time is set
by selecting a capacitor attached to the SS pin. The softstart
pin can also be used for a hard shutdown, by pulling it to
ground.
While the AC adapter is not present, the FAN5201 shuts
itself off, using an UVLO set at 6.0V.
If the AC adapter is connected to the FAN5201 circuit but is
not plugged in, the adapter could present a load to the bat-
tery. The FAN5201 prevents this by turning off Q2 (attached
to the INISO pin) if the input current falls below 200mA
(with an 18m
sense resistor). However, this function is dis-
abled until the softstart pin reaches steady state.
Output Protection
If input current exceeds the design of the FAN5201 (6A with
an 18m
sense resistor) the IC latches off Q1, disconnecting
the circuitry from input power within a few microseconds.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FAN8024BDTF | MOTOR CONTROLLER |
| FAN8026D | |
| FAN8026DTF | MOTOR CONTROLLER |
| FAN8034L | Controller Miscellaneous - Datasheet Reference |
| FAN8001DTF | Servo/Spindle Motor Controller/Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN8010MP | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:1 Channel DC Motor Driver |
| FAN8010MPX | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 1CH Motor Drive IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8024BD | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 BTL Driver 2+2 Mode RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8024BDTF | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 BTL Driver 3+2 Mode RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8024CD | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:4-Channel Motor Driver |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。