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基于UCC21225A隔离双路栅极驱动和参考设计

The UCC21225A is an isolated dual-channel gatedriver with 4-A source and 6-A sink peak current in a5-mm x 5-mm LGA-13 package. It is designed todrive power transistors up to 5-MHz with best-in-classpropagation delay and pulse-width distortion.

The input side is isolated from the two output driversby a 2.5-kVRMS isolation barrier, with 100-V/nsminimum common-mode transient immunity (CMTI)。

Internal functional isolation between the twosecondary side drivers allows working voltage up to700-VDC.This driver can be configured as two low-side, twohigh-side, or a half-bridge driver with programmabledead time (DT)。 A disable pin shuts down bothoutputs simultaneously when it is set high, and allowsnormal operation when left open or grounded.

The device accepts VDD supply voltages up to 25-V.A wide input VCCI range from 3-V to 18-V makes thedriver suitable for interfacing with both analog anddigital controllers. All the supply voltage pins haveunder voltage lock-out (UVLO) protection.

With all these advanced features, the UCC21225Aenables high power density, high efficiency, androbustness in a wide variety of power applications.

UCC21225A主要特性:

1• Universal: Dual Low-Side, Dual High-Side or Half-Bridge Driver

• 5 x 5 mm, Space-Saving LGA-13 Package

• Switching Parameters:

– 19-ns Typical Propagation Delay

– 5-ns Maximum Delay Matching

– 6-ns Maximum Pulse-Width Distortion

• CMTI Greater than 100-V/ns

• 4-A Peak Source, 6-A Peak Sink Output

• TTL and CMOS Compatible Inputs

• 3-V to 18-V Input VCCI Range

• Up to 25-V VDD with 5-V UVLO

• Programmable Overlap and Dead Time

• Rejects Input Transients Shorter than 5-ns

• Fast Disable for Power Sequencing

• Safety-Related Certifications:

– 3535-VPK Isolation per DIN V VDE V 0884-11:2017-01

– 2500-VRMS Isolation for 1 Minute per UL 1577

– CQC per GB4943.1-2011 (Planned)

UCC21225A应用:

• Server, Telecom, IT and Industrial Infrastructures

• DC-DC and AC-to-DC Power Supplies

• Motor Drive and DC-to-AC Solar Inverters

• HEV and BEV Battery Chargers

图1. UCC21225A框图

图2. UCC21225A功能框图

图3. UCC21225A典型应用电路图

10kW三级三相连接电网太阳能逆变器的参考设计918博天堂平台TIDA-0160610-kW

This reference design provides an overview on how toimplement a three-level, three-phase, SiC-basedDC/AC grid-tie inverter stage. A higher switchingfrequency of 50 kHz reduces the size of magnetics forthe filter design and as a result a higher power density.SiC MOSFETs with switching loss ensures higher DCbus voltages of up to 1000 V and lower switchinglosses with a peak efficiency of 99%. This design isconfigurable to work as a two-level or three-levelinverter.

参考设计TIDA-0160610-kW主要特性:

• Rated Nominal and Max Input Voltage at 800-Vand 1000-V DC

• Max 10-kW/10-kVA Output Power at 400-V AC50- or 60-Hz Grid-Tie Connection

• Operating Power Factor Range From 0.7 Lag to0.7 Lead

• High-Voltage (1200-V) SiC MOSFET-Based Full-Bridge Inverter for Peak Efficiency of 98.5%

• Compact Output Filter by Switching Inverter at50 kHz

• 《2% Output Current THD at Full Load

•Isolated Driver ISO5852S With Reinforced Isolationfor Driving High-Voltage SiC MOSFET andUCC5320S for Driving Middle Si IGBT

• Isolated Current Sensing Using AMC1301 for LoadCurrent Monitoring

• TMS320F28379D Control Card for Digital Control

参考设计TIDA-0160610-kW应用:

• Solar String Inverters

• Solar Central Inverters

图4.参考设计TIDA-0160610-kW外形图

图5.参考设计TIDA-0160610-kW框图

参考设计TIDA-0160610-kW主要指标:

图6.二级三相逆变器架构图

图7.二级单相逆变器腿图

图8.三级T型三相逆变器架构图

图9.参考设计TIDA-0160610-kW电路图(1):逆变器栅极驱动器

图10.参考设计TIDA-0160610-kW电路图(2):逆变器栅极驱动器

图11.参考设计TIDA-0160610-kW电路图(3):ISO HV卡

图12.参考设计TIDA-0160610-kW电路图(4):ISO HV卡

图13.参考设计TIDA-0160610-kW电路图(5):ISO HV卡

图14.参考设计TIDA-0160610-kW电路图(6):电源控制卡

图15.参考设计TIDA-0160610-kW电路图(7):电源控制卡

图16.参考设计TIDA-0160610-kW电路图(8):电源控制卡

图17.参考设计TIDA-0160610-kW电路图(9):电源控制卡