IP1206TRPBF International Rectifier, IP1206TRPBF Datasheet - Page 17

• Manufacturer Part Number: IP1206TRPBF
• Description: IC PWR BLOCK MULTIPHASE 30A LGA
• Manufacturer: International Rectifier
• Series: iPOWIR™r
• Type: Step-Down (Buck), PWM - Voltage Moder

Specifications of IP1206TRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1 or 2
• Voltage - Output: 0.8 V ~ 5.5 V
• Current - Output: 30A, 15A
• Frequency - Switching: 200kHz ~ 600kHz
• Voltage - Input: 7.5 V ~ 14.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: *
• Package / Case: *
• Package: LGA - 15.5 x 9.25
• Circuit: Single Output or Dual Ch
• Iout (a): 30
• Switch Freq (khz): 200 - 600
• Input Range (v): 7.5 - 14.5
• Output Range (v): 0.8 - 5.5
• Ocp Otp Uvlo Pre-bias Soft Start And: Pre-Bias + SEQ + SYNC + Tracking
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Fig. 18: Switching Frequency vs. External Resistor (R
Shutdown using Soft Start pins
The outputs can be shutdown by pulling the
soft-start pin below 0.25V. This can be easily
done by using an external small signa l
transistor. During shutdown both MOSFET
drivers will be turned off. Normal operation will
resume by cycling soft start pin.
Operating Frequency Selection
The switching frequency is determined by
connecting an external resistor (Rt) to ground.
Fig. 18 provides a graph of oscillator frequency
versus
channel frequency is 600kHz.
700
600
500
400
300
200
100
0
0
Rt.
10
The
20
maximum
30
Rt (kOhm)
40
recommended
50
60
2/26/2008
t
)
70
Frequency Synchronization
The iP1206 is capable of accepting an external
digital synchronization signal. Synchronization
will be enabled by the rising edge at an external
clock. Per–channel switching frequency is set by
external
frequency oscillator frequency is twice the per-
channel frequency. During synchronization, Rt is
selected such that the free running frequency is
20% below the synchronization frequency.
Synchronization capability is provided for both
single output current share mode and dual
output
pin will remain floating and is noise immune.
Thermal Shutdown
Temperature sensing is provided inside iP1206.
The trip threshold is typically set to 135
When trip threshold is exceeded, therma l
shutdown turns off both MOSFETs. Thermal
shutdown is not latched and automatic restart is
initiated when the sensed temperature drops to
normal range. There is a 20
shutdown threshold.
configuration. When unused, the sync
resistor
(Rt).
iP1206PbF
The
o
C hysteresis in the
free
running
o
C.
17