参数资料
| 型号： | ADP1046ACPZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 17/92页 |
| 文件大小： | 0K |
| 描述： | IC DGTL CTRLR 32LFCSP |
| 标准包装： | 5,000 |
| 应用： | 电源 |
| 输入电压： | 0 V ~ 1.6 V |
| 电源电压： | 3 V ~ 3.6 V |
| 电流 - 电源： | 20mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP-WQ（5x5） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页
Data Sheet
VS2 OPERATION (VS2)
VS2 is used in conjunction with VS1 to control the OrFET gate
drive turn-on. The VS2 sense point on the power rail needs an
external resistor divider to bring the nominal common-mode
The resistor divider is necessary because the VS2 ADC input
range is 0 V to 1.6 V. This divided-down signal is internally fed
into the VS2 ADC. The output of the VS2 ADC goes to the VS2
voltage value register (Register 0x16). The VS2 signal is never
used for the control loop but is used to control the turn-on and
turn-off of the OrFET (see the OrFET Control (GATE) section)
as well as the voltage continuity flag. If the OrFET function of
the ADP1046 is not used, it is recommended that the VS2 input
be connected directly to PGND. The VS2 value is updated in
Register 0x16 every 10 ms.
ADP1046
The feedforward scheme modifies the modulation value based
on the ACSNS voltage. When the ACSNS input is 1 V, the line
feedforward has no effect. For example, if the digital filter output
remains unchanged and the ACSNS voltage changes to 50% of
its original value (still higher than 0.5 V), the modulation of the
falling edge of OUTx doubles and vice versa (see Figure 19). The
voltage line feedforward function is optional and is programmable
using Register 0x75.
ACSNS
DIGITAL
FILTER
OUTPUT
t MODULATION
VS3 OPERATION (VS3+, VS3?)
VS3± is used for the monitoring and protection of the remote
load voltage. VS3± is a fully differential input that is the main
feedback sense point for the power supply control loop. The
OUTx
t S
t MODULATION
t S
VS3± sense point on the power rail needs an external resistor
divider to bring the nominal common-mode signal to 1 V at
the VS3± pins (see Figure 16). The resistor divider is necessary
because the VS3 ADC input range is 0 V to 1.6 V. This divided-
down signal is internally fed into a high frequency (HF) ADC.
The output of the VS3 ADC goes to the digital filter and is also
updated in Register 0x17 every 10 ms. The HF ADC is also the
high frequency feedback loop for the power supply.
VOLTAGE LINE FEEDFORWARD AND ACSNS
The ADP1046 supports voltage line feedforward control to
improve line transient performance. The ACSNS value is used
to divide the output of the digital filter, and the result is fed into
the PWM engine. The input voltage signal can be sensed at the
secondary winding of the isolation transformer and must be
filtered by an RCD network to eliminate the voltage spike at the
Figure 19. Feedforward Control on Modulation
The ACSNS level comparator is also connected on the same pin
and flags an ACSNS fault when the voltage on the pin is below
0.45 V within each switching period. The ACSNS level comparator
is used to detect whether the node is switching.
DIGITAL FILTER
The loop response of the power supply can be changed using the
internal programmable digital filter. A Type 3 filter architecture
has been implemented. To tailor the loop response to the specific
application, the low frequency gain, zero location, pole location,
and high frequency gain can all be set individually (see the Digital
the Analog Devices, Inc., software GUI be used to program the
filter. The software GUI displays the filter response in Bode plot
format and can be used to calculate all stability criteria for the
power supply.
0.45V
PROGRAMMABLE
ACTION (REG 0x0D[3:0])
From the sensed voltage to the duty cycle, the transfer function
of the filter in z-domain is as follows:
d
H(z) = ?
? + ? c
? 7 . 68
?
?
z ? b ?
z ? a ? ?
FROM
SECONDARY
R
ACSNS
ADC
0V TO 1.6V
ACSNS GAIN TRIM
(REG 0x5E)
?
?
? 202 . 24 × m
×
z
z ? 1
?
? ?
×
?
WINDING
R1
ACSNS FEEDFORWARD
Vx FEEDFORWARD 1/x GAIN
ADC (REG 0x75[1:0])
R2
0.6V TO 1.6V
DIGITAL DPWM
FILTER ENGINE
Figure 18. Feedforward Configuration
The ACSNS voltage must be set to 1 V when the nominal input
voltage is applied. The ACSNS ADC sampling period is 10 μs;
therefore, the decision to modify the PWM outputs based on
input voltage is performed at this rate.
where:
a = filter_pole_register_value/256.
b = filter_zero_register_value/256.
c = high_frequency_gain_register_value.
d = low_frequency_gain_register_value.
m = 1 when 48.8 kHz ≤ f SW < 97.7 kHz.
m = 2 when 97.7 kHz ≤ f SW < 195.3 kHz.
m = 4 when 195.3 kHz ≤ f SW < 390.6 kHz.
m = 8 when 390.6 kHz ≤ f SW .
where f SW is the switching frequency.
Rev. B | Page 17 of 92
相关PDF资料 |
PDF描述 |
|---|---|
| ADP1111ANZ-12 | IC REG BUCK BST INV 12V .2A 8DIP |
| ADP121-ACBZ12R7 | IC REG LDO 1.2V .15A 4WLCSP |
| ADP122AUJZ-2.9-R7 | IC REG LDO 2.9V .3A 5TSOT |
| ADP124ARHZ-2.85-R7 | IC REG LDO 2.85V .5A 8MSOP |
| ADP130AUJZ-2.5-R7 | IC REG LDO 2.5V .35A TSOT-23-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP1046ADC1-EVALZ | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| ADP1046AWACPZ-R7 | 功能描述:Power Supply Controller Power Supplies 32-LFCSP-WQ (5x5) 制造商:analog devices inc. 系列:- 包装:剪切带（CT） 零件状态:有效 应用:电源 电压 - 输入:0 V ~ 1.6 V 电压 - 电源:3 V ~ 3.6 V 电流 - 电源:20mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:32-WFQFN 裸露焊盘，CSP 供应商器件封装:32-LFCSP-WQ（5x5） 标准包装:1 |
| ADP1046DC1-EVALZ | 功能描述:BOARD EVAL DAUGHTERCARD ADP1046 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PSoC® 主要目的:电源管理，热管理 嵌入式:- 已用 IC / 零件:- 主要属性:- 次要属性:- 已供物品:板，CD，电源 |
| ADP1047 | 制造商:AD 制造商全称:Analog Devices 功能描述:Digital Power Factor Correction Controller |
| ADP1047-300-EVALZ | 制造商:Analog Devices 功能描述:ANAADP1047-300-EVALZ 300W EVALUATION BOA 制造商:Analog Devices 功能描述:EVAL DIGITAL PFC CONTROLLER 300W 制造商:Analog Devices 功能描述:ADP1047, PFC CNTLR, 300W, EVAL KIT |
发布紧急采购，3分钟左右您将得到回复。