Overview of RT6930 Power Management IC
Introduction
The RT6930 is a highly integrated power management IC used in a wide variety of LCD/LED TV mainboards. It is specifically designed to provide multiple regulated voltages through its built-in high-performance switching regulators and controllers. This IC supports step-down (buck) and step-up (boost) operations and is widely used in moderna display power circuits due to its stability, efficiency, and compact design. With a total of 40 pins, each with a specific role, the RT6936 ensures the reliable operation of TV panels and their associated electronics.
Understanding each pin and its purpose is crucial for technicians involved in fault diagnosis and repair of LED/LCD TV boards. Below is a detailed explanation of each pin function:
Pin Configuration and Descriptions
- Pin 1 – UGATE1: Upper gate drive output for Channel 1. Controls the high-side MOSFET.
- Pin 2 – PHASE1: Switching node of Channel 1. Connects to the inductor and high-side MOSFET source.
- Pin 3 – BOOT1: Bootstrap capacitor connection for Channel 1.
- Pin 4 – UGATE2: Upper gate drive output for Channel 2.
- Pin 5 – PHASE2: Switching node for Channel 2.
- Pin 6 – BOOT2: Bootstrap capacitor connection for Channel 2.
- Pin 7 – PVCC: Power supply for gate drivers.
- Pin 8 – LGATE1: Low-side gate drive output for Channel 1.
- Pin 9 – GND: Ground.
- Pin 10 – LGATE2: Low-side gate drive output for Channel 2.
- Pin 11 – VDD: Supply voltage for control logic.
- Pin 12 – PGOOD: Power good indicator output.
- Pin 13 – FB1: Feedback input for Channel 1 voltage regulation.
- Pin 14 – COMP1: Compensation pin for Channel 1 loop control.
- Pin 15 – EN1: Enable pin for Channel 1.
- Pin 16 – FB2: Feedback input for Channel 2 voltage regulation.
- Pin 17 – COMP2: Compensation pin for Channel 2.
- Pin 18 – EN2: Enable pin for Channel 2.
- Pin 19 – VREF: Reference voltage output.
- Pin 20 – SS1: Soft-start control for Channel 1.
- Pin 21 – SS2: Soft-start control for Channel 2.
- Pin 22 – ILIM1: Current limit setting for Channel 1.
- Pin 23 – ILIM2: Current limit setting for Channel 2.
- Pin 24 – RT: Timing resistor pin for frequency adjustment.
- Pin 25 – SGND: Signal ground for analog circuitry.
- Pin 26 – VIN: Main input voltage.
- Pin 27 – BST3: Bootstrap capacitor for Channel 3.
- Pin 28 – UGATE3: Upper gate drive for Channel 3.
- Pin 29 – PHASE3: Switching node for Channel 3.
- Pin 30 – LGATE3: Low-side gate drive for Channel 3.
- Pin 31 – FB3: Feedback for Channel 3.
- Pin 32 – COMP3: Compensation for Channel 3.
- Pin 33 – EN3: Enable pin for Channel 3.
- Pin 34 – ILIM3: Current limit for Channel 3.
- Pin 35 – SS3: Soft-start control for Channel 3.
- Pin 36 – AGND: Analog ground.
- Pin 37 – VOUT1: Output voltage for Channel 1.
- Pin 38 – VOUT2: Output voltage for Channel 2.
- Pin 39 – VOUT3: Output voltage for Channel 3.
- Pin 40 – NC: Not connected (or reserved).
Conclusion
The RT6936 is a versatile power management IC designed to regulate multiple outputs for LED/LCD television mainboards. Its 40-pin configuration offers comprehensive control over power delivery, soft-start, voltage feedback, current limiting, and fault protection. For a technician, understanding each pin’s function can greatly simplify troubleshooting and replacement tasks. Due to its compact size and high performance, the RT6936 remains a preferred choice in display technologies. Proper identification and use of this IC can enhance the reliability and efficiency of TV repairs.
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Shaukat Ali – Expert LED TV Repair Technician in Lahore
With over 30 years of hands-on experience in LED TV repair, I specialize in identifying and fixing complex display and motherboard faults.
Based in Lahore, I offer expert repair insights for leading brands including Sony, Samsung, TCL, Orient, Haier, and ETC.
On this website, I share authentic, practical fault-finding articles based on real-life repair cases to support technicians and TV owners alike.
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