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Power Switching Device Cannot Drive Themselves - Mastering the Art of High Voltage Gate Driver Design in UPS, Telecom, and Servers

We live in a world where designers are constantly pursuing higher efficiencies and higher power densities. Our customers want more power out with less power loss, while achieving smaller solution sizes! They strive to reduce switching losses while maintaining signal integrity. The need for higher efficiency and power density is a trend seen across isolated and non-isolated power systems in Uninterruptible Power Supplies (UPS), Telecom Rectifiers, and Server PSUs.

Efficiency is a team effort that includes, but is not limited to, better performing gate drivers, controllers, and Power devices. High voltage switching devices have seen exponential improvements in new technologies (like SiC-MOSFETS, GaN transistors, Trench/Field-Stop IGBTs, and Super-Junction MOSFETs) and dynamic performance (like switch-transition speed, switching loss and body/anti-parallel reverse recovery). These improvements, however, cannot be fully realized without robust, fast, and smart high voltage gate drivers. These gate drivers are necessary to handle high dv/dt, high di/dt, and fast propagation delays.

This in-depth discussion will cover how to drive these state-of-the-art power transistors and key design considerations that our customers face. Topics will include: parasitic influences, hard switching vs soft switching, non-linear junction capacitance (CRSS, COSS), common-mode transient immunity (CMTI), turn-off negative bias, separating power/ground noise, and trade-offs between different isolated DC-DC topologies for powering gate drivers.

We will also highlight how TI’s reference designs and strong gate driver portfolio address design challenges found in UPS, Telecom Rectifiers, and Server PSUs. Parts discussed will include TI's first 600V/700V half-bridge gate driver, UCC2771X, and the industry's fastest isolated dual-channel gate driver, UCC2152X and simple single channel Isolated IGBT/SiC Gate Drivers, ISO53xx.

1. Title, Introduction and Outline

In this training series, we will touch the gate driver applications, fundamentals of low side gate driver, high- and low side gate driver and isolated gate driver. And we will surely go deep and help you understand the gate driver design considerations with TI reference design and the corresponding critical waveforms.

# Title Duration
1.1 Power Switching Device Cannot Drive Themselves - Mastering the Art of High Voltage Gate Driver Design in UPS, Telecom, and Servers
Power Switching Device Cannot Drive Themselves - Mastering the Art of High Voltage Gate Driver Design in UPS, Telecom, and Servers
00:38
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2. Gate Driver Applications and System Architecture

The first section will discuss the applications where the different kinds of gate driver will be used, and we will also identify the gate drivers location used in each typical system architecture.

# Title Duration
2.1 Gate Driver Applications and System Architecture
The section will discuss the applications where the different kinds of gate driver will be used.
04:58
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3. Introducing Popular Power Semiconductors

This training video will be introducing Popular Power Semiconductors - Si-MOSFETs, IGBTs, SiC-MOSFETs and GaN, and identify the differences among this devices in the perspective the gate driver design and select consideration.

# Title Duration
3.1 Introducing Popular Power Semiconductors
This training video introduces typical characteristics of popular power semiconductors
02:04
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4. Low Side and H-Bridge Gate Driver Fundamentals

This training video illustrates the operation fundamentals for the low side and half-bridge gate driver.

# Title Duration
4.1 Low Side and H-Bridge Gate Driver Fundamentals
This training video illustrate the operation fundamentals for the low side and half-bridge gate driver.
03:28
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5. Gate Driver Select Considerations and Key Specs

This training video discusses the gate driver select considerations and key specifications, and also introduces the novel gate driver specs for high end gate driver.

# Title Duration
5.1 Gate Driver Select Considerations and Key Specs
This training video discusses the gate driver select considerations and key specifications, and also introduces the novel gate driver specs for high end...
05:10
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6. Why Isolation in Power Electronics System?

This training series will firstly discuss the isolation requirement in power electronics system, and then compare the different driver isolation implementation methodologies. Integrated isolated gate driver shows the best performance in the perspective of size, performance and reliability.

# Title Duration
6.1 Why Isolation in Power Electronics System?
This training series will discuss how to achieve control and driver isolation in power electronics system.
03:19
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7. What is UCC2x52x?

This training video will firstly discuss the configuration of the UCC2x52x gate driver and it featured benefits, then a detailed bench experiment comparison shows that UCC2x52x family gate drivers has better dynamic performance as well as stable and predictable source/sink peak current. 

# Title Duration
7.1 What is UCC2152x?
This training video is trying to introduce TI's isolated gate driver - UCC2x52x, industry’s fastest 5.7kVrms isolated dual channel gate driver. 
02:40
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8. UCC21520 – Turn-Off with Negative Voltage

This training video will help to understand the UCC2152x's output configuration and grounding consideration when driving FETs and IGBTs with negative voltage bias. Three different implementation methods are introduced, pros and cons of each methods are illustrated.

# Title Duration
8.1 Isolated Gate Driver Turn Off with Negative Voltage
This training video will illustrate the UCC2152x's two output channels configuration, and shows the solution options to implement the negative turn-of...
02:46
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9. Gate Driver Design Deep Dive

Gate driver design deep dive outline:

-Parasitics in gate driver
-Gate driver soft/hard switching difference
-Strong gate driver and MOSFET nonlinear COSS
-Common mode transient immunity(CMTI), dV/dt and di/dt through parasitics L, and C?
-How to separate power ground noise by PCB layout?
-Power supply for isolated gate driver in UPS, server and Telecom system
-TIDA and Experimental waveforms

# Title Duration
9.1 Gate Driver Design Deep Dive
This training video will discuss the outline of gate driver design considerations deep dive.
00:43
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10. Parasics and its Influences at Hard-Switching

In this training video, parasitics in the gate driver system is identified. Piece-wise linear switching sequence at turn on/off is illustrated. Reverse recovery introduced additional complexity on turn-on transition is explained with comparison of MOSFETs and IGBTs.

# Title Duration
10.1 Parasitics and its Influences at Hard-Switching
This training video will identify where the parasitics in the gate driver system, and illustrate its influences on hard-switching power electronics sy...
03:02
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11. Must Knows of Gate Driver for ZVS Converter

In this training video, soft switching ZVS converters, including totem-pole PFC and LLC resonant converter, is mentioned to improve all the all the issues of hard-switching, especially the reverse recovery of the diode. Differences of gate driver on hard-switching and soft-switching is highlighted and explained. New issues of soft switching, high turn-off current, is also discussed with strong gate driver to minimize the turn-off loss. LLC resonant converter turn-off loss mechanism is illustrated in depth.

# Title Duration
11.1 Must Knows of Gate Driver for ZVS Converter
This video will discuss considerations of gate driver for zero voltage soft switching conditions and the differences from hard-switching.
04:46
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12. Gate Driver Operation with High dV/dt and di/dt

This training video discusses the strong gate driver introduced high dv/dt and di/dt during turn-on and turn-off switching transition, and also illustrate the high dv/dt and di/dt introduced noise through the parasitic capacitance/inductance on high side level-shift and junction capacitance on the bootstrap diode. Solutions with new state-of-the-art gate driver and its key features are introduced and explained.

# Title Duration
12.1 Gate Driver Operation with High dV/dt and di/dt
This training video discusses the strong gate driver introduced high dv/dt and di/dt during turn-on and turn-off switching transition and the corresponding...
02:38
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13. Summary and References

This training video summarizes the content of this gate driver series and the key references.

# Title Duration
13.1 Summary and References
This training video summarizes the content of this gate driver series and key references.
00:12
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