EVALSTSR30-60W STMicroelectronics, EVALSTSR30-60W Datasheet - Page 8

• Manufacturer Part Number: EVALSTSR30-60W
• Description: BOARD EVAL USING L6668 & STSR30
• Manufacturer: STMicroelectronics
• Type: AC/DC Switching Convertersr

Specifications of EVALSTSR30-60W

• Mfg Application Notes: EVALSTSR30-60W AppNote
• Main Purpose: AC/DC, Primary and Secondary Side
• Outputs And Type: 1, Isolated
• Power - Output: 60W
• Voltage - Output: 12V
• Current - Output: 5A
• Voltage - Input: 88 ~ 264VAC
• Regulator Topology: Flyback
• Frequency - Switching: 68kHz
• Board Type: Fully Populated
• Utilized Ic / Part: L6668, STSR30
• Input Voltage: 88 V to 264 V
• Output Voltage: 12 V
• Dimensions: 120 mm x 75 mm
• Product: Power Management Modules
• Silicon Manufacturer: ST Micro
• Silicon Core Number: L6668 And STSR30
• Kit Application Type: Power Management - Voltage Regulator
• Application Sub Type: SMPS
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6668, STSR30
• Other names: 497-6389; EVALSTSR30-60W

AN2432
Figure 2.
Figure 4.
Ch1: Q3 drain voltage
M1: ISEN pin voltage
CH1: Out
CH2: S-COMP
CH3: COMP
CH4: RCT
Figure 4
full load. The oscillator signal is stable and clean in all conditions.
On the secondary side, in CCM operation (full load with V
STSR30 is synchronized with the CK pin (copy of SR MOSFET drain voltage clamped at 5V)
as shown in
In
(225ns) and the jitter due to the digital counter inside the IC. In fact, most times the
anticipation has its typical value but sometimes the counter vary its value of ±1 cycle
(approximately ±70ns using the 14-MHz internal oscillator). In any case, cross-conduction is
always avoided.
V
V
IN
IN
Figure
= 115V
= 115V
and
7, the turn-off detail is zoomed and it is possible to see the anticipation amount
RMS
RMS
Figure
Figure 5
- 60Hz
- 60Hz
6.
show some of most important signals of the L6668 while operating at
Figure 3.
Figure 5.
Ch1: Q3 drain voltage
M1: ISEN pin voltage
CH1: Out
CH2: S-COMP
CH3: COMP
CH4: RCT
V
V
IN
IN
= 230V
= 230V
IN
= 115V
RMS
RMS
AC
- 50Hz
- 50Hz
), the gate drive of the
Adapter features
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