UCD8220

數(shù)字輔助推挽式 PWM 控制器; ? For digitally managed power supplies using μCs or the TMS320 ? DSP family\n? Voltage or peak current mode control with cycle-by-cycle current limiting\n? Clock input from digital controller to set operating frequency and max duty cycle\n? Analog PWM comparator\n? 2-MHz switching frequency\n? 110-V input startup circuit and thermal shutdown (UCD8620)\n? Internal programmable slope compensation\n? 3.3-V, 10-mA linear regulator\n? DSP/μC compatible inputs \n? Dual ±4-A TrueDrive? integrated circuit high current drivers\n? 10-ns typical rise and fall times with 2.2-nF\n? 25-ns input-to-output propagation delay \n? 25-ns current sense-to-output propagation delay\n? Programmable current-limit threshold\n? Digital output current-limit flag\n? 4.5-V to 15.5-V supply voltage range\n? Rated from –40°C to 105°C;

The UCD8220 analog pulse-width modulator (PWM) device is used in digitally managed power supplies using a microcontroller or the TMS320 DSP family.\n\nThe UCD8220 device is a double-ended PWM controller configured with push-pull drive logic. \n\nSystems using the UCD8220 device close the PWM feedback loop with traditional analog methods, but the UCD8220 controller includes circuitry to interpret a time-domain digital pulse train. The pulse train contains the operating frequency and maximum duty cycle limit which are used to control the power supply operation. The device circuitry eases implementation of a converter with high level control features without the added complexity or possible PWM resolution limitations of closing the control loop in the discrete time domain.\n\nThe UCD8220 device can be configured for either peak current mode or voltage mode control. The device provides a programmable current-limit function and a digital output current-limit flag which can be monitored by the host controller to set the current limit operation. For fast switching speeds, the output stage uses the TrueDrive output circuit architecture, which delivers rated current of ±4-A into the gate of a MOSFET. Finally the device also includes a 3.3-V, 10-mA linear regulator to provide power to the digital controller or act as a reference in the system. \n\nThe UCD8220 controller is compatible with the standard 3.3-V I/O ports of UCD9K digital power controllers, DSPs, microcontrollers, or ASICs and is offered in the PowerPAD? integrated circuit package HTSSOP.

UCD8220

DIGITALLY MANAGED PUSH-PULL ANALOG PWM CONTROLLERS

UCD8220

DIGITALLY MANAGED PUSH-PULL ANALOG PWM CONTROLLERS

UCD8220-Q1

汽車類 4.5V 至 15.5V 數(shù)字輔助推挽式 PWM 控制器; ? 具有符合 AEC-Q100 的下列結(jié)果：器件從預(yù)覽變?yōu)樯a(chǎn) \n? 器件溫度 1 級(jí)：-40°C 至 125°C 的環(huán)境運(yùn)行溫度范圍\n? 器件人體模型 (HBM) 靜電放電 (ESD) 分類等級(jí) 2\n? 器件組件充電模式 (CDM) ESD 分類等級(jí) C4B\n \n? 用于使用 μC 或者 TMS320 ?數(shù)字信號(hào)處理器 (DSP) 系列的數(shù)控電源\n? 帶有逐周期電流限制的電壓或者峰值電流模式控制\n? 來自數(shù)字控制器的時(shí)鐘輸入設(shè)定運(yùn)行頻率和最大占空比\n? 模擬 PWM 比較器\n? 2MHz 開關(guān)頻率\n? 110V 輸入啟動(dòng)電路和熱關(guān)斷 (UCD8620)\n? 內(nèi)部可編程斜率補(bǔ)償\n? 3.3V，10mA 線性穩(wěn)壓器\n? DSP/μC 兼容輸入 \n? 雙 ±4A TrueDrive?集成電路高電流驅(qū)動(dòng)器\n? 由 2.2nF 電容實(shí)現(xiàn)的 10ns 典型上升和下降時(shí)間 \n? 25ns 輸入到輸出傳播延遲 \n? 25ns 電流感測(cè)到輸出傳播延遲\n? 可編程電流限制閾值\n? 數(shù)字輸出電流限制標(biāo)志\n? 4.5V 至 15.5V 電源電壓范圍;

UCD8220-Q1 模擬脈寬調(diào)制器 (PWM) 器件適用于采用微控制器或者 TMS320 DSP 系列的數(shù)控電源。\n\nUCS8220-Q1 器件是一款配有推挽驅(qū)動(dòng)邏輯的雙端 PWM 控制器。 \n\n使用 UCD8220-Q1 的系統(tǒng)使用傳統(tǒng)模擬方法閉合 PWM 反饋環(huán)路，但是 UCD8220-Q1 控制器也包括用于解釋一個(gè)時(shí)域數(shù)字連續(xù)脈沖信號(hào)的電路。這個(gè)連續(xù)脈沖信號(hào)包含用于控制電源操作的運(yùn)行頻率和最大占空比限制。該器件的電路簡(jiǎn)化了具有高電平控制 特性 的轉(zhuǎn)換器的實(shí)現(xiàn)方式，無需在離散時(shí)域中閉合控制環(huán)路，因而不會(huì)造成額外的復(fù)雜性或可能的 PWM 分辨率限制。\n\nUCD8220-Q1 器件可配置為峰值電流模式或電壓模式控制。此器件提供了可編程電流限制功能和一個(gè)可由主機(jī)控制器加以監(jiān)控的數(shù)字輸出電流限制標(biāo)志，用于設(shè)定限流操作。為了實(shí)現(xiàn)快速開關(guān)速度，輸出級(jí)采用 TrueDrive 輸出電路架構(gòu)，此架構(gòu)傳送 ±4A 的額定電流進(jìn)入 MOSFET 的柵極。最后，該器件還包括一個(gè) 3.3V、10mA 的線性穩(wěn)壓器，該穩(wěn)壓器能夠?yàn)閿?shù)字控制器供電或用作系統(tǒng)中的一個(gè)基準(zhǔn)。 \n\nUCD8220-Q1 控制器與 UCD9K 數(shù)字電源控制器，DSP，微控制器，或者 ASIC 的 3.3V 標(biāo)準(zhǔn) I/O 端口兼容并封裝在 PowerPAD?集成電路散熱薄型小尺寸封裝 (HTSSOP) 內(nèi)。

UCD8220_16

DIGITALLY MANAGED PUSH-PULL ANALOG PWM CONTROLLERS

UCD8220PWP

DIGITALLY MANAGED PUSH-PULL ANALOG PWM CONTROLLERS

UCD8220PWP

DIGITALLY MANAGED PUSH-PULL ANALOG PWM CONTROLLERS

UCD8220PWPR

DIGITALLY MANAGED PUSH-PULL ANALOG PWM CONTROLLERS

UCD8220PWPR

DIGITALLY MANAGED PUSH-PULL ANALOG PWM CONTROLLERS

UCD8220PWPRG4

DIGITALLY MANAGED PUSH-PULL ANALOG PWM CONTROLLERS