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International Rectifier Electronic Components Datasheet

IP1203 Datasheet

Single Output Full Function Synchronous Buck Power Block

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PD- 96921C
iP1203
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Features
• 5.5V to 13.2V Input Voltage
• 0.8V to 8V Output Voltage
• 15A Maximum Load Capability
• 200-400kHz Nominal Switching Frequency
• Over Current Hiccup
• External Synchronization Capable
• Overvoltage Protection
• Over Temperature Protection
• Internal Features Minimize Layout Sensitivity
• Very Small Outline 9mm x 9mm x 2.3mm
Single Output Full Function
Synchronous Buck Power Block
Integrated Power Semiconductors,
PWM Control & Passives
iP1203 Power Block
Description
The iP1203 is a fully optimized solution for medium current synchronous buck applications requiring up to 15A.
It includes full function PWM control, with optimized power semiconductor chipsets and associated passives,
achieving high power density. Very few external components are required to create a complete synchronous
buck power supply.
iPOWIRtechnology offers designers an innovative space-saving solution for applications requiring high
power densities. iPOWIR technology eases design for applications where component integration offers benefits
in performance and functionality. iPOWIR technology solutions are also optimized internally for layout, heat
transfer and component selection.
iP1203 Simplified Application Schematic
VIN
VIN OC
VCC_bypass
VSW
FB
PGOOD iP1203
SS
FBS
RT
SYNC
CC
VREF
VOUT
Pin Number
(See Page 18) Pin Name
1, 23
VIN
Pin Description
Input voltage connection pins
2,3,4,5,7,17,20,21 PGND
Power Ground pins
6 VCC_bypass
PWM controller power supply pin. Internally generated.
Requires a 2.2µf external bypass capacitor
8
SS
Soft start pin. External capacitor provides soft start. Pulling soft start pin low
will disable the output. Cannot be cycled to unlatch OVP trip
9 CC
Output of the error amplifier
10 FB
Inverting input of the error amplifier
11 FBs
Output overvoltage sense pin.
12
RT
Switching frequency setting pin. For RT selection, refer to Fig.9 of the
datasheet
13
PGOOD
Power Good pin. Open collector, requires external pulll-up. If function not
needed, pin can be left floating
14
VREF
Non inverting input of the error amplifier (reference Voltage pin). Connect a
100pF cap from this pin to PGND.
15
SYNC
External Clock synchronization pin. Set free running frequency to 80% of
the SYNC frequency. When not in use, leave pin floating
16 OCSET
Output overcurrent trip threshold pin
18,19
22
24
VSW
VSWs
VINs
Output inductor connection pins
Test pad, for internal use, short to VSW
Test pad, for internal use, short to VIN
04/08/05


International Rectifier Electronic Components Datasheet

IP1203 Datasheet

Single Output Full Function Synchronous Buck Power Block

No Preview Available !

iP1203
All specifications @ 25°C (unless otherwise specified)
Absolute Maximum Ratings
Parameter
VIN
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Output Overvoltage Sense
PGOOD
Soft Start
SYNC
Output RMS Current
Symbol
Min
Typ
Max
Units Conditions
VIN -0.3 ––– 15
FB
-0.3 –––
6
FBS
-0.3 –––
6
V
-0.3 ––– 15
SS
-0.3 –––
6
-0.3 –––
6
IoutVSW
––– –––
15
A See Fig.3
Block Temperature
TBLK -10 ––– 125 °C
Recommended Operating Conditions
Parameter
Input Voltage Range
Symbol
VIN
Output RMS Current
IoutVSW
Output Voltage Range
VOUT
Min
5.5
–––
–––
0.8
0.8
Typ
–––
–––
–––
–––
–––
Max
13.2
15
11
8.0
3.3
Units
V
A
Conditions
TPCB = TCASE = 90°C. See Fig.3
A
TPCB = 90°C, TCASE = no airflow, no
heatsink.
V For VIN = 12V
For VIN = 5.5V
Electrical Specifications @ VIN = 12V
Parameter
Power Loss
Symbol
PLOSS
Over Current Shutdown
HICCUP Duty Cycle
Soft Start Time
Reference Voltage
VOUT Accuracy
Error Amplifier
Source/Sink Current
Error Amplifier
Transconductance
Output Overvoltage Shutdown
Threshold
PGOOD Trip Threshold
PGOOD Output Low Voltage
IOC
DHICCUP
tSS
VREF
VOUT_ACC1
VOUT_ACC2
IERR
gm
OVP
VTh_PGOOD
VLO_PGOOD
Min
–––
–––
–––
–––
–––
-3
-2
–––
Typ
3.75
25
5
5
0.8
–––
–––
60
Max
4.9
–––
–––
–––
–––
3
2
–––
Units
W
A
Conditions
fSW = 300kHz, VIN = 12V, TBLK= 25°C
VOUT = 1.5V, IOUT = 15A, See Fig.10
VIN = 12V, VOUT = 1.5V
fSW = 300KHz, ROCSET = 40.2k
%
ms
VIN = 12V, VOUT = 1.5V,
CSS=0.1µF
V
TBLK = -10°C to 125°C
% VIN= 12V, VOUT = 1.5V
TBLK = 0°C to 70°C
VIN= 12V, VOUT = 1.5V
µA
––– 2000 ––– µmho
1.1 x VOUT 1.15 x VOUT 1.2 x VOUT
V
––– 0.85 x VOUT –––
––– ––– 0.3
V FB ramping down
V ISINK=2mA
2 www.irf.com


Part Number IP1203
Description Single Output Full Function Synchronous Buck Power Block
Maker International Rectifier
PDF Download

IP1203 Datasheet PDF






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