FSD200BM Fairchild Semiconductor, FSD200BM Datasheet - Page 11

• Manufacturer Part Number: FSD200BM
• Description: IC SWIT PWM GREEN UVLO HV 7SOP
• Manufacturer: Fairchild Semiconductor

Specifications of FSD200BM

• Output Isolation: Isolated
• Frequency Range: 126 ~ 142kHz
• Voltage - Input: 6 ~ 10 V
• Voltage - Output: 670V
• Power (watts): 7W
• Operating Temperature: 25°C ~ 100°C
• Package / Case: 8-SOP (7 Leads)
• Power Switch Family: FSD200
• Input Voltage: -0.3 to 10V
• Power Switch On Resistance: 28Ohm
• Number Of Outputs: Single
• Mounting: Surface Mount
• Supply Current: 600uA
• Package Type: SOP
• Operating Temperature (min): -25C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Pin Count: 7
• Power Dissipation: 1450W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: FSD200BM_NL; FSD200BM_NL

6. Burst operation : In order to minimize the power dissi-
pation in standby mode, the FSD200B/210B enter burst
mode operation. As the load decreases, the feedback voltage
decreases. The device automatically enters burst mode when
the feedback voltage drops below V
point switching stops and the output voltages start to drop.
This causes the feedback voltage to rise. Once is passes
V
falls and the process repeats. Burst mode operation alter-
nately enables and disables switching of the power MOSFET
to reduce the switching loss in the standby mode.
7. Frequency Modulation : Modulating the switching fre-
quency of a switched power supply can reduce EMI by
spreading the energy over a wider frequency range than the
bandwidth measured by the EMI test equipment. The
amount of EMI reduction is directly related to the depth of
the reference frequency. As can be seen in Figure 13, the fre-
quency changes from 130KHz to 138KHz in 4ms for the
FSD200B/210B. Frequency modulation allows the use of a
cost effective inductor instead of an AC input mode choke to
satisfy the requirements of world wide EMI limits.
BURH
0.58V
0.64V
Vo
Vds
V
Ids
Vo
FB
set
(0.64V) switching starts again. The feedback voltage
Figure 12. Burst Operation Function
Vfb
4
5uA
250uA
OSC
BURL
S
R
/0.58V
0.64V
Burst Operation Block
(0.58V). At this
Q
FSD2xxB
DRIVER
GATE
on/off
t
Figure 15. FSD210B Full Range EMI scan(134kHz, with
Figure 14. FSDH0165 Full Range EMI scan(100kHz, no
138kHz
134kHz
130kHz
Figure 13. Frequency Modulation Waveform
f
s
=1/t
Frequency Modulation) with charger set
Frequency Modulation) with charger set
s
t
s
Current
Drain
Frequency(MHz)
Frequency(MHz)
4ms
CISPR22Q(PK)
CISPR22Q(PK)
FSD210B, FSD200B
CISPR22A(AV)
CISPR22A(AV)
t
11