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.

• 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

• Topology
• Full-Bridge, Half-Bridge, Push-Pull
• Duty cycle (Max) (%)
• 100
• Supply voltage (Max) (V)
• 15.5
• UVLO thresholds on/off (V)
• 4.25/4.05
• Features
• Adjustable Switching Frequency, Current Limiting, Frequency Synchronization, Multi-topology, Programmable Slope Compensation, Soft Start, Synchronization Pin, Thermal Shutdown
• Operating temperature range (C)
• -40 to 105
• Rating
• Catalog
• Frequency (Max) (kHz)
• 2000
• Gate drive (Typ) (A)
• 4.0, -4.0

UCD8220的完整型号有：UCD8220PWP，以下是这些产品的关键参数及官网采购报价：

UCD8220PWP，工作温度：-40 to 105，封装：HTSSOP (PWP)-16，包装数量MPQ：90个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCD8220PWP的批量USD价格：1.716（1000+）

TIDA-00122 — 汽车类 200 VA 高频逆变器设计

此设计提供基于 TI MSP430 和 UCD8220 数字管理推挽控制器的低成本小尺寸稳定型 200-VA 直流转交流逆变器。此设计面向汽车逆变器和用于商业用途的小型逆变器。在此设计中，升压级采用 UCD8220 从 12-V 电池获取 250-V 直流。MSP430 充当主机控制器，并为 UCD8220 和输出直流/交流电桥的驱动器提供 100-kHz 时钟。此逆变器的峰值效率为 90%，具有自然散热功能，无需散热风扇。