UCD8220
- For digitally managed power supplies using µCs or the TMS320 ™ DSP family
- Voltage or peak current mode control with cycle-by-cycle current limiting
- Clock input from digital controller to set operating frequency and max duty cycle
- Analog PWM comparator
- 2-MHz switching frequency
- 110-V input startup circuit and thermal shutdown (UCD8620)
- Internal programmable slope compensation
- 3.3-V, 10-mA linear regulator
- DSP/µC compatible inputs
- Dual ±4-A TrueDrive™ integrated circuit high current drivers
- 10-ns typical rise and fall times with 2.2-nF
- 25-ns input-to-output propagation delay
- 25-ns current sense-to-output propagation delay
- Programmable current-limit threshold
- Digital output current-limit flag
- 4.5-V to 15.5-V supply voltage range
- 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.
The UCD8220 device is a double-ended PWM controller configured with push-pull drive logic.
Systems 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.
The 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.
The 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.
技術資料
| 種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
|---|---|---|---|---|---|---|
| * | データシート | UCD8220 Digitally Managed Push-Pull Analog PWM Controllers データシート (Rev. E) | PDF | HTML | 2020年 1月 29日 | ||
| ユーザー・ガイド | 200-VA HF Inverter Design Based on UCD8220 and MSP430G2330 for Automotive Applications | 2013年 3月 7日 | ||||
| その他の技術資料 | Исходные проекты ll | 2011年 5月 13日 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
TIDA-00122 — オートモーティブ 200-VA 高周波数インバータ・デザイン
| パッケージ | ピン数 | ダウンロード |
|---|---|---|
| HTSSOP (PWP) | 16 | オプションの表示 |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 材質成分
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点