EVL6562A-400W STMICROELECTRONICS | Alldatasheet
Document overview
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- PDF pages: 9
Technical content
Features
■ Line voltage range: 90 to 265 Vac ■ Minimum line frequency (fL): 47 Hz ■ Regulated output voltage: 400 V ■ Rated output power: 400 W ■ Maximum 2fL output voltage ripple: 10 V pk-pk ■ Hold-up time: 22 ms (VDROP after hold-up time: 300 V) ■ Maximum switching frequency: 85 kHz (@V in= 90 Vac, Pout= 400 W) ■ Minimum estimated efficiency: 90% (@V in= 90 Vac, Pout= 400 W) ■ Maximum ambient temperature: 50 °C ■ EMI: in accordance with EN55022 Class-B ■ PCB type and size: single side,70 µm,CEM- 1,148.5x132 mm ■ Low profile design: 35 mm component maximum height
Description
The board implements a 400 W, wide-range mains input, PFC pre-conditioner suitable for ATX PSU, Flat screen displays, etc. To make possible the use of a low-cost device like the L6562A at this power level, usually prohibitive for TM PFC, the chip operates with Fixed-Off-Time control. This allows continuous conduction mode operation, normally achievable with more expensive control chips and more complex control architectures. For technical details and demoboard performance, please refer to the available application note. Table 1. Device summary
1 Circuit schematic
Figure 1. EVL6562A-400W schematic
- Boost inductor spec. (Delta Electronics 86H-5410B): – vertical 6+6, PQ40+30 ferrite – 1 mm gap for 500 µH primary inductance – Primary: 65 turns 30x0.2 mm – Secondary: 5 turns 0.28 mm ZCDCS MULT COMP INV L6562A VCC GD GND R102 0R0 +400Vout R19 1K0 C20 330pF CM -1.5mH-5A DM-51uH-6A C15 68pF C16 120pF R22 0R47-1W R15 1k8 C11 470nF/50V C12 100uF/50V R16 30k STP12NM50FP 470nF-X 2 LL4148 R20 0R47-1W BZX85-C18 R23 0R47-1W 1M5 1N5406 STTH8R06 8A/250V 100K C21 10nF R17 6R8 R34 10k R18 6R8 BC857C R33 620k LL4148 470nF-630V R32 620k LL4148 NTC 2R5-S237 T PQ40-500uH STP12NM50FP 100K R31 R21 0R47-1W D15X B60 47R 470nF-630V R12 47K R13 12k R11 510k R10 510k R35 3R9 R36 3R9 510k 470nF R14 47k 680nF-X2 470nF-630V C14 2.2uF C13 220nF LL4148 330uF-450V C10 22N +400Vdc 1-2 +400Vdc +400Vdc 5-6 81 1 RTN NC RTN +400Vdc 90 - 265Vac R101 0R0
2 Circuit layout
Figure 2. PCB layout (a)
3 Typical performance
Figure 3. EVL6562A-400W compliance to Figure 4. EVL6562A-400W compliance to Figure 5. EVL6562A-400W compliance to Figure 6. EVL6562A-400W compliance to Figure 7. Power factor vs. V in and load Figure 8. THD vs. V in and load
Table 2. Bill of material
Table 2. Bill of material (continued)
4 Revision history
Table 3. Document revision history 07-Feb-2008 1 Initial release.