EVL80WLED-STCH03 80W-1A primary side current loop control LED driver with STCH03 for street lighting applications Data brief Due to current primary side STCH03 control loop, the output stage is composed of a simple diode rectification and the output capacitor. Form factor is compatible with street lighting application. At full load the efficiency is above the 90% at nominal voltages and remains very close to this value till half the load. Output short-circuit and no-load protections are auto-restart for a safe operation in lighting Features environment. Input voltage: Vin: 90 - 265 Vrms, f: 45-66 Hz Low input power is there at no-load conditions. LED string range: 40 -80 V / 1A Output current ripple < 50 mA Fast startup: <300 ms High power factor, low THD (<5%) No-load: < 0.5 W 230 Vin Average Full load efficiency: >90% Short-circuit protection with auto-restart LED string open with auto-restart Acc. to EN61000-3-2 Class-C or JEITA-MITI Class-C EMI: Acc. To EN55022 class B - conducted emissions Safety: Acc. to EN60065C Description The EVL80WLED-STCH03 demonstration board implements a wide range 80 W - LED driver for street lighting applications with a primary current sensing control loop. The LED driver is a fixed current source with a very fast start-up time, protections to short-circuit and to open load. The board is optimized to supply an LED string load in the range from 40 V to 80V with a fixed 1 A current source with a very low current ripple. September 2019 DB3954 Rev 1 1/7 For further information contact your local STMicroelectronics sales office. www.st.com 5 5 5 5 1 1 // // 5 5 4 4 // // 1 1 // // 0 0 5 5 0-0- 4 4 6767 9F9F Q) Q) S) S) 9U9U 5 5 7%7% X) X) 6&6& 5 5 1 1 5 5 0808 & & ,R,R 9 9 9 9 N N X) X) 5 5 6767 1 1 1 1 0 0 5 5 // // 4 4 1 1 HFHF 9V9V / 6/ 6 1 1 // // 7 7 // 1// 1 0 0 0 0 +6+6 0 0 9 9 1 1 1 1 1 1 1 1 1 1 / / 5 5 / / 1 1 EVL80WLED-STCH03 Figure 1. EVL80WLED-STCH03 schematics R 9 R9 XWXW XXWW .0 6 . 0 6 %= % % %= 9 9 Q) Q) 0B&&228287720B 9 9 X) X) 77 7+7+33 +77+ / )673367 / ) 6767 7+7+ 5 5 9 9 5 9 5 9 (+.(11.+ 77 ++ U99YY U X) 9 9 X) . 167 167 . )) H 9H 9 * (* ( X X 9 9 9 9 X) X) * * *1 *1 6(6(16(16( &117& 7 667 7 1.++1. 77 ++ 00 ) ) 9 1 001 1 9 1 & & 5 100 1 5 X X 9 9 00 0 0 == BB -- aa * * && *1*1 aa 00 0&+ &0+ 3003 7//7 )) 22 & & 0 0 (+(+ ))88 . 0 .0 FD D F 2/7 DB3954 Rev 1 ) ) - - 6( 6( 5 5 6 6 & & *%8*%8 & & & & & & / 8 / 8 6767 & & & & & & 1 1 9 9 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 & & 5 5 5 5 5 5 & & %=%= 1 1 5 5 5 5 0 0 -3-3 & & 5 5 1010 1010 1010 1010 1010 .( .( / ) / ) 6767 5 5 & & 0 0 8 8 & & & & 928928 ,19,19 9&9& 5 5 5 5 6767 & & 5 5 &2&2 - - +6+6 & & ,1.,1.+(+( 5 5 +6+6 5 5 6, 6, ( 7( 7 5 5 & & &6&6 =& =& 5 5 9)9) 581581 & & & & & & 5 5 5 5 5 5 1 1 2323 67 673:3: 1010 1010 5 5 5 5 3)3) 2.2. 3:3:/ 7/ 7 5 5 5 5 & & & & 5 5 5 5 5 5 5 5 & & 5 5 %=%= 9 &9 & & & & & 8 8 5 5 5 5 +9+9 9 9 1&1& )%)% =& =& +6+6 5 5 &+ &+ 6, 6, 7 7 5 5 5 5 & & 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 & & 1010 5 5