PKS606FN Power Integrations, PKS606FN Datasheet - Page 6

• Manufacturer Part Number: PKS606FN
• Description: IC OFFLINE SWIT OTP OCP HV TO262
• Manufacturer: Power Integrations
• Series: PeakSwitch®r

Specifications of PKS606FN

• Mfg Application Notes: PeakSwitch Design Guide AppNote
• Output Isolation: Isolated
• Frequency Range: 250 ~ 304kHz
• Voltage - Output: 700V
• Power (watts): 117W
• Operating Temperature: -40°C ~ 150°C
• Package / Case: TO-262-7 (Formed Leads), 5 Leads
• Output Voltage: 12 V
• Input / Supply Voltage (max): 265 VAC
• Input / Supply Voltage (min): 85 VAC
• Duty Cycle (max): 65 %
• Switching Frequency: 47 KHz
• Supply Current: 25 uA
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: Through Hole
• For Use With: 596-1198 - KIT REF DESIGN 36-72W MOTOR DRVR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 596-1125-5

be used, as the V
with low effective (primary and reflected secondary) leakage
inductance values.
Ripple to Peak Current Ratio, K
Below a value of 1, indicating continuous conduction mode, K
is the ratio of ripple to peak primary current (Figure 6).
Figure 6. Continuous Mode Current Waveform, K
Rev. E 02/07
Primary
Primary
6
(b) Borderline Continuous/Discontinuous, K P = 1
(a) Continuous, K P < 1
Figure 7. Discontinuous Mode Current Waveform, K
I R
I R
AN-41
OR
is reduced from 135 V, and/or in designs
Secondary
Secondary
K
Primary
Primary
P
I P
≡ K
I P
RP
P (STEADYSTATE)
=
I
I
R
P
(a) Discontinuous, K P > 1
(b) Borderline Discontinuous/Continuous, K P = 1
P
and K
≤1.
D x T
PI-2587-011400
D x T
P (TRANSIENT)
K
P
≡
t
T = 1/f
T = 1/f
P
K
P
≥1.
DP
S
S
=
(1-D) x T
(1-D) x T
(1-D) x T = t
Above a value of 1, indicating discontinuous conduction mode,
K
diode conduction time.
The value of K
guidance is given in the comments cell if the value is outside
this range.
K
where several switching cycles have occurred consecutively.
K
after a switching cycle has been skipped. When the drain
current starts from zero and ramps to the current limit, the on
time for this first cycle is much longer than during steady state
operation. This reduces the off time, reducing the time for the
magnetizing inductance to reset, and causing the next cycle to
start with a much higher initial current, a lower ripple current
and a lower value of K
t
P
P (STEADY STATE)
P (TRANSIENT)
is the ratio of primary MOSFET off time to the secondary
is the calculated minimum K
is the calculated K
P
should be in the range of 0.25 < K
P
.
P
value under the condition
PI-2578-100606
P
value that occurs
P
< 6 and