: The 6-pin connector provides the following signals:
The GYD-9E is a universal or replacement constant-current power supply board designed to drive LED strips in 11" to 20" LCD monitors and televisions. It is frequently used in repair scenarios where the original internal backlight driver has failed. Key Specifications Application: LED Backlight Power Supply (Tira LED TV LCD) Supported Screen Sizes: 11 to 20 inches Input Voltage: Typically operates around +15V DC Major Components:
Unlike basic buck converters, the board works as a boost architecture using the DF6113 chip. It is structurally optimized for current feedback monitoring. Rather than keeping the voltage rigid, the driver dynamically adjusts VOUTcap V sub cap O cap U cap T end-sub
: Receives the digital trigger from the monitor's main logic scalar chip. A logical high state ( ) boots the PWM booster, while a logical low ( ) enters standby mode. gyd-9e datasheet
A: For resistive loads at ≤70% rated current, MTBF exceeds 5 million switching cycles. For inductive loads with snubber, expect 1–2 million cycles. For DC loads (inductive), lifespan drops significantly due to arcing on turn-off.
The GYD-9E integrates several protection mechanisms to enhance system robustness:
The module combines three distinct sensors into a single package: : The 6-pin connector provides the following signals:
According to published GYD-9E datasheets, the efficiency peaks at moderate loads. Example data points:
For industrial automation, where noise is a concern:
is critical to preventing component failure during integration. Below are the standardized operating characteristics retrieved from field application data. Standard Rating / Value native rails. Output Voltage ( VOUTcap V sub cap O cap U cap T end-sub ) Configured for groups of 3-series LEDs. Output Current ( IOUTcap I sub cap O cap U cap T end-sub ) Scalable via on-board current sensing resistors. Compatible Screen Sizes 15" to 24" Widescreen panels Optimized for standard desktop/TV backlights. Control Signal Logic High Level: Low level ( ) disables operation. Physical Dimensions Ultra-slim form factor for tight chassis spacing. Pinout Configuration and Interface Layout It is structurally optimized for current feedback monitoring
While a visual graph cannot be embedded in text, a written summary of typical performance charts is provided:
To modify the maximum output current limit, you must alter the total resistance of the current-sensing resistor block ( RSR sub S end-sub ) located adjacent to the LED output interface:
Slide the LED strip terminal pins into the dual output ports on the GYD-9E board. Ensure the LED strip has been safely cut down only at marked intervals (usually in groups of three LEDs) to preserve correct matching impedance.