參數(shù)資料
型號(hào)： CDRH104R-150
廠商： Electronic Theatre Controls, Inc.
英文描述： 2-ch DC/DC Converter IC
中文描述： 2通道直流/直流轉(zhuǎn)換器集成電路
文件頁(yè)數(shù)： 11/36頁(yè)
文件大?。?/td> 380K
代理商： CDRH104R-150
MB39A104
11
I
FUNCTIONS
1.
DC/DC Converter Functions
(1) Reference voltage block (REF)
The reference voltage circuit generates a temperature-compensated reference voltage (5.0 V Typ) from the
voltage supplied from the power supply terminal (pin 7). The voltage is used as the reference voltage for the
IC’s internal circuitry.
The reference voltage can supply a load current of up to 1 mA to an external device through the VREF terminal
(pin 17).
(2) Triangular-wave oscillator block (OSC)
The triangular wave oscillator incorporates a timing capacitor and a timing resistor connected respectively to
the CT terminal (pin 13) and RT terminal (pin 12) to generate triangular oscillation waveform amplitude of 1.5 V
to 2.5 V.
The triangular waveforms are input to the PWM comparator in the IC.
(3) Error amplifier block (Error Amp1, Error Amp2)
The error amplifier detects the DC/DC converter output voltage and outputs PWM control signals. In addition,
an arbitrary loop gain can be set by connecting a feedback resistor and capacitor from the output terminal to
inverted input terminal of the error amplifier, enabling stable phase compensation to the system.
Also, it is possible to prevent rush current at power supply start-up by connecting a soft-start capacitor with the
CS1 terminal (pin 11) and CS2 terminal (pin 14) which are the non-inverted input terminal for Error Amp. The
use of Error Amp for soft-start detection makes it possible for a system to operate on a fixed soft-start time that
is independent of the output load on the DC/DC converter.
(4) PWM comparator block (PWM Comp.)
The PWM comparator is a voltage-to-pulse width modulator that controls the output duty depending on the input/
output voltage.
The comparator keeps output transistor on while the error amplifier output voltage remain higher than the
triangular wave voltage.
(5) Output block
The output block is in the totem pole configuration, capable of driving an external P-channel MOS FET.
(6) Bias voltage block (VH)
This bias voltage circuit outputs V
CC
5 V(Typ) as minimum potential of the output circuit. In standby mode, this
circuit outputs the potential equal to V
CC
.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CDRH104R-150NC 功能描述:INDUCTOR POWER 15UH 3.60A SMD RoHS:否 類別:電感器，線圈，扼流圈 >> 固定式 系列:CDRH 標(biāo)準(zhǔn)包裝:500 系列:1331 電感:1.2µH 電流:247mA 電流 - 飽和:247mA 電流 - 溫升:- 類型:鐵芯體 容差:±10% 屏蔽:屏蔽 DC 電阻(DCR):最大 730 毫歐 Q因子@頻率:40 @ 7.9MHz 頻率 - 自諧振:130MHz 材料 - 芯體:鐵 封裝/外殼:0.312" L x 0.115" W x 0.135" H（7.94mm x 2.92mm x 3.43mm） 安裝類型:表面貼裝 包裝:帶卷 (TR) 工作溫度:-55°C ~ 105°C 頻率 - 測(cè)試:7.9MHz
CDRH104R-151 制造商:ECM 制造商全稱:ECM Electronics Limited. 功能描述:Surface Mount Power Inductors
CDRH104R-151NC 功能描述:INDUCTOR POWER 150UH 1.15A SMD RoHS:否 類別:電感器，線圈，扼流圈 >> 固定式 系列:CDRH 標(biāo)準(zhǔn)包裝:500 系列:1331 電感:1.2µH 電流:247mA 電流 - 飽和:247mA 電流 - 溫升:- 類型:鐵芯體 容差:±10% 屏蔽:屏蔽 DC 電阻(DCR):最大 730 毫歐 Q因子@頻率:40 @ 7.9MHz 頻率 - 自諧振:130MHz 材料 - 芯體:鐵 封裝/外殼:0.312" L x 0.115" W x 0.135" H（7.94mm x 2.92mm x 3.43mm） 安裝類型:表面貼裝 包裝:帶卷 (TR) 工作溫度:-55°C ~ 105°C 頻率 - 測(cè)試:7.9MHz
CDRH104R-1R3 制造商:ECM 制造商全稱:ECM Electronics Limited. 功能描述:Surface Mount Power Inductors
CDRH104R-1R5NC 功能描述:INDUCTOR POWER 1.5UH 10.0A SMD RoHS:否 類別:電感器，線圈，扼流圈 >> 固定式 系列:CDRH 標(biāo)準(zhǔn)包裝:500 系列:1331 電感:1.2µH 電流:247mA 電流 - 飽和:247mA 電流 - 溫升:- 類型:鐵芯體 容差:±10% 屏蔽:屏蔽 DC 電阻(DCR):最大 730 毫歐 Q因子@頻率:40 @ 7.9MHz 頻率 - 自諧振:130MHz 材料 - 芯體:鐵 封裝/外殼:0.312" L x 0.115" W x 0.135" H（7.94mm x 2.92mm x 3.43mm） 安裝類型:表面貼裝 包裝:帶卷 (TR) 工作溫度:-55°C ~ 105°C 頻率 - 測(cè)試:7.9MHz
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