TS19730 Z Single-Stage Low THD Buck-Boost PWM Control LED Driver SOT-26 Pin Definition: 1. VCC 2. GND 3. OUT 4. CL 5. COM 6. CS Description The TS19730 is a high power factor, low THD and high accuracy constant current PWM controller. TS19730 achieves high power factor and high efficiency by boundary current mode (BCM). The line and load regulation of LED current are within ±2.5%. TS19730 also provides gate driving voltage clamping, VCC over-voltage protection, and system output open/short circuit protection to increase IC performance. Features Applications ● ● ● ● ● ● ● ● ● ● ● ● ● ● Low THD <10% Constant Current Accuracy within ±2.5% High Power Factor >0.9 Low BOM Cost Boundary Conduction Mode Control Gate Output Voltage Clamp LED Open Protection LED Short protection Over Current Protection (OCP) ● Over Thermal Protection (OTP) LED lighting Down light Tube lamp PAR lamp Bulb Ordering Information Part No. Package Packing TS19730CX6 RFG SOT-26 3kpcs / 7” Reel Note: “G” denotes for Halogen- and Antimony-free as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds Absolute Maximum Ratings (Note 1) Parameter Symbol Range Unit Power Supply Pin VCC 40 V CL Voltage to GND VCL -0.3 to 5.5 V OUT Voltage to GND VOUT -0.3 to 40 V CS Voltage to GND VCS -0.3 to 5.5 V VCOM -0.3 to 5.5 V Junction Temperature Range TJ -40 to +150 °C Storage Temperature Range TSTG -65 to +150 °C Lead Temperature (Soldering 10s) TLEAD 260 °C PD 0.3 W HBM 2 kV MM 200 V Symbol Range Unit Thermal Resistance Junction to Ambient RθJA 220 °C/W Thermal Resistance Junction to Case RθJC 106.6 °C/W COM Voltage to GND Power Dissipation @ TA=25 °C ESD Rating (Human Body Mode) ESD Rating (Machine Mode) (Note2) (Note 2) Thermal Information (Note 3) Parameter 1/7 Version: A15 TS19730 Z Single-Stage Low THD Buck-Boost PWM Control LED Driver Recommended Operating Conditions (Note 4) Parameter Symbol Conditions Unit Power Supply Pin VCC 33 V CL Voltage to GND VCL -0.3 to 5 V OUT Voltage to GND VOUT -0.3 to 19 V CS Voltage to GND VCS -0.3 to 5 V VCOM -0.3 to 5 V Operating Junction Temperature Range TJ -40 to +125 °C Operating Ambient Temperature Range TOPA -40 to +85 °C COM Voltage to GND Electrical Characteristics (VCC=18V, TC=25°C, unless otherwise specified.) Parameter Symbol Condition Min Typ Max Unit VCC= VUVLO(on) -1V -- 45 -- μA With 1nF load on out pin -- 2.1 2.6 mA Supply Voltage Start-up Current VCC(ST) Operating Current IOPA UVLO(off) VUVLO(off) 7 8 9 V UVLO(on) VUVLO(on) 16 17.5 19 V VOVP 29 31 33 V Feedback Reference Voltage VFB 0.196 0.2 0.204 V Transconductance gm -- 58 -- μS IO-SINK -- 5.8 -- μA IO-SOURCE -- 5.8 -- μA -- 5 -- V OVP Level on VCC Pin Voltage Feedback Output Sink Current Output Source Current Current Sensing Open Loop Voltage VOLP Leading-Edge Blanking Time tLEB -- 400 -- ns tDELAY -- 100 -- ns VOCP -- 0.3 -- V f STR -- 4.5 -- kHz Delay to Output CS Pin Open Current Limit CL Limit Voltage Switching Frequency Start Frequency Gate Driver Output Rising Time tRISE Load Capacitance =1nF -- 90 -- ns Falling Time tFALL Load Capacitance =1nF -- 40 -- ns -- 12.5 15 V Thermal Shutdown -- 150 -- °C Thermal Shutdown Release -- 120 -- °C VGATE-Clamp Thermal Section VGATE (Note 5,6) 2/7 Version: A15 TS19730 Z Single-Stage Low THD Buck-Boost PWM Control LED Driver Electrical Characteristics (Continue) Note: 1. Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. 2. Devices are ESD sensitive. Handing precaution recommended. 3. Thermal Resistance is specified with the component mounted on a low effective thermal conductivity test board in free air at TA=25°C. 4. The device is not guaranteed to function outside its operating conditions. 5. Guaranteed by design. 6. Auto Recovery Type. Function Block VCC_OVP VCC UVLO/VBG VREF START OUT Q Driver VREF S SR Latch OCP CL R PRO (VCC_OVP, OTP) RST COM SAWTOOTH CS GM VREF GND Fig. 1 Pin Description Pin No. Name Function 1 VCC 2 GND Ground return for all internal circuitry. 3 OUT Gate driver output. 4 CL 5 COM 6 CS Power supply pin for all internal circuitry. Current limit. Output pin of error amplifier. Input current sense pin. 3/7 Version: A15 TS19730 Z Single-Stage Low THD Buck-Boost PWM Control LED Driver Typical Application Circuit Fuse MOV AC Input 90V~264V TS19730 VCC CS GND COM OUT CL RCL RS Fig. 2 Application Information Start-up Current The typical start-up current is around 45μA. Very low start-up current allows the PWM controller to increase the value of start-up resistor and then reduce the power dissipation. UVLO(Under Voltage Lockout) A hysteresis UVLO comparator is implemented in TS19730. The turn-on and turn-off thresholds level are fixed at 17.5V and 8V respectively. This hysteresis shown in Fig.3 ensures that the start-up capacitor will be adequate to supply the chip during start-up. For quick start-up of the LED driver, the start-up resistor should be matched with the start-up capacitor. VCC VUVLO(on) 17.5V VUVLO(off) 8V Fig. 3 LEB(Leading-Edge Blanking) Each time the power MOSFET is switched on, a turn-on spike will inevitably occur at the sense resistor. To avoid fault trigger, a 400ns leading-edge blanking time is built in. Conventional RC filtering can therefore be omitted. During this blanking period, the current-limit comparator is disabled and cannot switch off the gate driver. OCP(Over Current Protection) The TS19730 has built-in cycle by cycle over current protection function on CL pin. As the CL pin voltage is larger than VOCP (0.3V), the gate output will be turned off immediately to avoid the driver board to be burned out. 4/7 Version: A15 TS19730 Z Single-Stage Low THD Buck-Boost PWM Control LED Driver Application Information (Continue) OVP (Over Voltage Protection) on VCC To prevent the LED driver from being damaged, the TS19730 has an implemented OVP function on VCC. When the VCC voltage is higher than the VOVP (31V), the output gate driver circuit will be shut down immediately to stop the switching of power MOSFET. The VCC pin OVP function is an auto recovery type protection. If the OVP condition happens, the pulses will be stopped until the VCC pin voltage is down to the UVLO off level. The TS19730 is working in an auto-recovery mode as shown in Fig. 4. VCC VOVP VUVLO(on) VUVLO(off) OUT Non-Switching Fig. 4 Gate Clamp Driver is clamped to 12.5V by an internal clamping circuit to avoid the Gate of MOSFET to get damaged. 5/7 Version: A15 TS19730 Z Single-Stage Low THD Buck-Boost PWM Control LED Driver SOT-26 Mechanical Drawing Unit: Millimeters Marking Diagram SA = Device Code Y = Year Code M = Month Code for Halogen Free Product (O=Jan, P=Feb, Q=Mar, R=Apl, S=May, T=Jun, U=Jul, V=Aug, W=Sep, X=Oct, Y=Nov, Z=Dec) L = Lot Code 6/7 Version: A15 TS19730 Z Single-Stage Low THD Buck-Boost PWM Control LED Driver Notice Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale. 7/7 Version: A15