The latest supply supply HV9910BLG-G universal LED drive controller

The HV9910B is an open loop, current mode, control LED driver IC. The HV9910B can be programmed to operate in either a constant frequency or constant off-time mode. It includes an 8.0 - 450V linear regulator which allows it to work from a wide range of input voltages without the need for an external low voltage supply. The HV9910B includes a PWM dimming input that can accept an external control signal with a duty ratio of 0 - 100% and a frequency of up to a few kilohertz. It also includes a 0 - 250mV linear dimming input which can be used for linear dimming of the LED current. The HV9910B is ideally suited for buck LED drivers. Since the HV9910B operates in open loop current mode control, the controller achieves good output current regulation without the need for any loop compensation. PWM dimming response is limited only by the rate of rise and fall of the inductor current, enabling very fast rise and fall times. The HV9910B requires only three external components (apart from the power stage) to produce a controlled LED current making it an ideal solution for low cost LED drivers.

HV9910BLG-G Product Application:DC-DC or AC-DC LED driver; RGB backlight driver; Backlight of flat screen TV; Universal constant current source; 

LED signal light and decorative light

HV9910BLG-G latest 2022 spot supply

Characteristics and application field
HV9910B is a universal LED drive controller.

• Switch mode controller for single switch LED drivers

• Enhanced drop-in replacement to the HV9910

• Open loop peak current controller

• Internal 8.0 to 450V linear regulator

• Constant frequency or constant off-time operation

• Linear and PWM dimming capability

• Requires few external components for operation

HV9910BLG-G

HV9910BLG-G 

In addition to the above universal characteristics, the drive controller has the following characteristics.

● High conversion efficiency, up to 85% ~ 90%;

● The driver circuit is simple, less peripheral components, not only occupy a small PCB area, and low production cost;

● Internal with 450VDC input high voltage, output 7.5V linear voltage regulator. No external step-down resistance, so that the circuit is simpler, and can be output as the analog dimming circuit current;

● There are two operating modes: constant frequency mode and constant off time mode;

● Switching frequency set by the user (external with a set frequency of resistance RT);

● There are two dimming modes: analog dimming mode and PWM dimming mode;

● The output drive current is set with a peripheral resistor RCS.

The drive circuit composed of the LED drive controller is mainly used in the mains power drive multiple series of high power LED lights, but also suitable for the use of batteries powered inside and outside the car lighting and sign lights (turning, forklift, reversing) or solar cell powered occasions (navigation lights, street lights, etc.).

HV9910BLG-G

In addition to lighting, the LED driver can also be used for general purpose constant current bleaching and battery charger applications.

 HV9910BLG-G package with pin function

HV9910BLG-G has two kinds of 8-pin and 16-pin. The 8-pin has DIP and SOIC package, while the 16-pin only has SOIC package. Its pin arrangement is shown in Figure 1, and the functions of each pin are shown in Table 1. The pin with NC in pin 16 is an empty pin.

SOIC-8DIP SOIC-16 symbol function

VIN operating voltage input terminal 8 ~ 450VDC

CS ILED detection terminal, the external current sampling resistor RCS is connected to GND

GND The ground of the power supply, also the ground of the internal circuit

GATE Gate of an external MOSFET switch

PWMD PWM dimming input is also the enable end. When this end is on high power level, GATE end outputs high level and MOSFET is on. When the terminal is in low voltage, the MOSFET is off with no output

VDD internal 7.5V regulated power supply output terminal, this end is connected to a low ESR capacitor to the ground (capacitance 2.2 ~ 4.7μF), using multi-layer ceramic capacitor (MLCC)

LD analog dimming input terminal, input 0 ~ 250mV dimming voltage, adjust LED brightness

RT External switch tube working frequency setting resistance RT. In constant frequency mode, the other end is grounded; In constant turn-off time mode, the other end of RT is connected to the GATE