Tpmt5510ipb805 Diagram

The TP.MT5510I.PB805 is a common Smart TV "Three-in-One" motherboard that combines the main processor, power supply unit (PSU), and LED backlight driver onto a single board.

While a single "one-click" official PDF diagram for the PB805 specifically is rare, technical resources often point to the TP.MT5510I.PB801 schematic, which shares a nearly identical circuit architecture. Technical Breakdown & Diagrams

Main Circuit Schematic: You can find detailed circuit diagrams for this series (including power regulation and component connections) on Scribd or Electronica PT.

ISP Pinout (EMMC): For advanced repairs like firmware flashing, ISP connection points for the EMMC (e.g., KINGSTON EMMC04G-M627) are available on OneTV-SRT. tpmt5510ipb805 diagram

UART Pinout: For terminal recovery when the board is stuck on a logo, the VGA/BGA port typically uses Pin 4 (RX), Pin 11 (TX), and Pin 6 (GND). Key Specifications Type Smart TV 3-in-1 Mainboard (SoC + PSU + LED Driver) Processor MediaTek MT5510 series (often MT558x variants) Resolution

Supports HD and Full HD (frequently used in 32" to 43" LED TVs) Connectivity HDMI, USB, AV, RF, LAN, and Wi-Fi Backlight Volt.

Variable based on panel size (e.g., 22uF/160V or 33uF/200V capacitors) Common Troubleshooting Points The TP

Visual Representation (ASCII Diagram)

      +V Supply (e.g., 12V)
           |
           +-----+-------+
           |     |       |
           |     R1      |
           |   (10k)     |
           |     |       |
           |   [Pin 3]   |
           |   (Gate)    |
           |     |       |
           |    R2       |
           |   (100)     |
           |     |       |
           |   [Ctrl] <-- Control Signal (Low = ON)
           |
         [Pin 1]
         (Source)
           |
       +---+---+
       |  TPMT |
       | 5510  |
       |  IPB  |
       +---+---+
           |
         [Pin 2]
         (Drain)
           |
           +-----> To LOAD (+)

5. PCB Layout Guidelines

When designing the physical diagram (PCB layout) for the TPMT5510IPB805:

1. Thermal Relief: The IPB package relies on PCB copper for heat dissipation. Connect Pin 2 (Drain) to a large copper pour (pad) to act as a heat sink.
2. Kelvin Sensing: If using Pin 4 (Source Sense), ensure the trace for Pin 4 does not carry the high main current. Route it separately to the sensing circuit to avoid voltage drops that would ruin measurement accuracy.
3. Gate Loop: Keep the trace between the Gate driver and Pin 3 short to reduce inductance and prevent oscillation.

Key Timing Parameters (from the diagram):

• Input filter time (t_filt): Minimum input pulse width to avoid false triggering (~1-2µs).
• Propagation delay (t_PD(on)): Time from rising edge of control input to IGBT turn-on (~500ns).
• Fault output delay (t_Fo): Time from fault detection (desat) to VFO pin going low (~2µs).
• Output shutdown: When VFO is low, the internal drive logic disables all six IGBTs.

2. The TPMT5510IPB805 Block Diagram (Internal Architecture)

The core of the technical documentation is the internal block diagram. Below is a text-based representation of the signal flow inside the module.

[ DC+ (P) ] -------------------|-------------------------|-------------------------|
                               |                         |                         |
                          [ IGBT ]                    [ IGBT ]                  [ IGBT ]
                               |                         |                         |
    U (Output) <---------------|                         |                         |
                               |                         |                         |
    Up (Control Input) ----> [Drive IC]               [Drive IC]               [Drive IC]
                               | Protection               | Protection             | Protection
    VFO (Fault Out) <----------| Circuit                  | Circuit                | Circuit
                               |                         |                         |
    VCC (Control Supply) ----->|                         |                         |
    GND (Control GND) ---------|                         |                         |
                                                                                    |
[ DC- (N) ] -------------------|-------------------------|-------------------------|

2. Pinout Diagram (The "Map")

To draw the schematic, you must understand the pin configuration. The IPB package typically follows a standard 4-pin layout for Power MOSFETs with sense capabilities. Visual Representation (ASCII Diagram) +V Supply (e

Standard IPB (DIP-4) Pinout:

| Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | Source | Current input (connected to Vcc rail). | | 2 | Drain | Current output (connected to Load). | | 3 | Gate | Control voltage input (driven by controller IC). | | 4 | Source Sense | Kelvin connection for accurate current sensing. |

Diagram Visualization: Imagine a rectangle (the IC).

• Pin 1 (Top Left): Connects to your main Supply Rail.
• Pin 4 (Bottom Left): Connects to a sensing resistor or controller sense line.
• Pin 3 (Bottom Right): Connects to your Driver/Gate control logic.
• Pin 2 (Top Right): Connects to your Load.

Scenario A: Module Blows Immediately on Power-Up

• Check the Diagram: Look at the bootstrap supply (VUB/VVB/VWB).
• Likely Cause: Floating supply not referenced to the output pin. If the bootstrap capacitor is shorted or missing, the high-side IGBT’s gate floats, causing shoot-through.