Texas Instruments HV Resonant LLC Developer’s Kit TMDSHVRESLLCKIT TMDSHVRESLLCKIT Datenbogen
Produktcode
TMDSHVRESLLCKIT
LLC Resonant
Vin
Vout
Hardware Overview
This board uses the C2000 to control a half-bridge LLC resonant DC/DC converter with synchronous
rectification. The power stage regulates the output voltage using 2P2Z and PID closed-loop control.
rectification. The power stage regulates the output voltage using 2P2Z and PID closed-loop control.
shows the circuit diagram.
Figure 3. TMDSHVRESLLCKIT Circuit Diagram
2.1
Macro Blocks
The high-voltage half-bridge LLC resonant DC/DC converter with synchronous rectification board is
divided into functional groups referred to as macro blocks. The use of a macro block approach enables
easy debug and testing of one section at a time. All of the PWM and ADC signals have designated test
points on the board, which makes it easy for a developer to not only debug but try out new algorithms and
strategies.
divided into functional groups referred to as macro blocks. The use of a macro block approach enables
easy debug and testing of one section at a time. All of the PWM and ADC signals have designated test
points on the board, which makes it easy for a developer to not only debug but try out new algorithms and
strategies.
The following is a list of the macro blocks present on the board and brief descriptions of each:
•
Main Board area – [Main] – Contains the controlCARD socket, power connectors, jumpers, and the
routing of signals between the controlCARD and the macro blocks. This section includes any area
outside of other defined macro blocks.
routing of signals between the controlCARD and the macro blocks. This section includes any area
outside of other defined macro blocks.
•
Aux-DC-Power macro – [M3] – Generates the 12 V - 15 V, 5 V, and 3.3 V DC power rails from a 12 V
DC supply included with the kit, an external DC power supply, or the on-board 400 V-to-15 V DC/DC
module.
DC supply included with the kit, an external DC power supply, or the on-board 400 V-to-15 V DC/DC
module.
•
[M2] – A LLC resonant DC/DC conversion stage, used to decrease the input voltage to the voltage
used by the LED strings.
used by the LED strings.
•
Isolated-USB-to-JTAG macro– [M4] – Provides an on-board isolated JTAG connection through USB
to the host as well as isolated SCI (UART) communication.
to the host as well as isolated SCI (UART) communication.
•
LLC Resonant + SR macro – [M1] – Isolated Resonant LLC DC/DC power stage with synchronous
rectification.
rectification.
•
400 V-to-15 V DC/DC macro – [M2] – Generates an isolated 15 V from the 400 V input voltage.
For the placement of each macro block, see
. In this application report, each component is named
first with their macro number followed by the reference name. For example, [M2]-J1 would refer to the
jumper J1 located in the macro M2 and [Main]-J1 would refer to the J1 located on the board outside of the
other defined macro blocks.
jumper J1 located in the macro M2 and [Main]-J1 would refer to the J1 located on the board outside of the
other defined macro blocks.
4
High-Voltage Half-Bridge LLC Resonant DC/DC Converter With Synchronous
SPRABS1 – February 2013
Rectification Hardware Kit
Copyright © 2013, Texas Instruments Incorporated