PTH03020W Datasheet, PDF (1/19 Pages) Texas Instruments – 22-A, 3.3-V Input Non-Isolated Wide-Output Adjust Power Module

PTH03020W —3.3-V Input
22-A, 3.3-V Input Non-Isolated
Wide-Output Adjust Power Module
SLTS206C – MAY 2003 – REVISED DECEMBER 2003
NOMINAL SIZE = 1.5 in x 0.87 in
(38,1 mm x 22,1 mm)
Features
• Up to 22-A Output Current
• 3.3-V Input Voltage
• Wide-Output Voltage Adjust
(0.8 V to 2.5 V)
• Efficiencies up to 93 %
• 120 W/in³ Power Density
• On/Off Inhibit
• Output Voltage Sense
• Pre-Bias Startup
• Margin Up/Down Controls
• Under-Voltage Lockout
• Auto-Track™ Sequencing
• Output Over-Current Protection
(Non-Latching, Auto-Reset)
• Over-Temperature Protection
• Operating Temp: –40 to +85 °C
• IPC Lead Free 2
• Safety Agency Approvals:
UL 1950, CSA 22.2 950, EN60950
VDE (Pending)
• Point-of-load Alliance (POLA)
Compatible
Description
The PTH03020 series of non-isolated
power modules offers OEM designers a
combination of high performance, small
footprint, and industry leading features.
As part of a new class of power modules
these products provide designers with the
flexibility to power the most complex
multi-processor digital systems using
off-the-shelf catalog parts.
The series employs double-sided surface
mount construction and provides high-
performance step-down power conversion
for up to 22 A of output current from a
3.3-V input bus voltage. The output volt-
age of the PTH03020W can be set to
any value over the range, 0.8 V to 2.5 V,
using a single resistor.
This series includes Auto-Track™.
Auto-Track simplifies the task of supply
voltage sequencing in a power system by
enabling modules to track each other, or
any external voltage, during power up and
power down.
Other operating features include an
on/off inhibit, output voltage adjust (trim),
and margin up/down controls. To ensure
tight load regulation, an output voltage
sense is also provided. A non-latching
over-current trip and over-tempterature
shutdown provide load fault protection.
Target applications include complex
multi-voltage, multi-processor systems
that incorporate the industry’s high-speed
DSPs, micro-processors and bus drivers.
Pin Configuration
Pin Function
1 GND
2 Vin
3 Inhibit *
4 Vo Adjust
5 Vo Sense
6 Vout
7 GND
8 Track
9 Margin Down *
10 Margin Up *
* Denotes negative logic:
Open = Normal operation
Ground = Function active
ASuteoq-uTreanccki™ng
Standard Application
Track
Margin Down
Margin Up
V_IN
Inhibit
GND
10 9 8
1
7
PTH03020W
(Top View)
2
6
345
C_IN
1,000 µF
(Required)
R_SET (Required)
0.1 W, 1 %
Rset = Required to set the output voltage to a value
higher than 0.8 V. (See spec. table for values)
Cin = Required electrolytic 1,000 µF
Cout = Recommended 330 µF electrolytic
V_OUT
V_o Sense
L
O
C_OUT
A
330 µF
D
(Optional)
GND
For technical support and further information, visit http://power.ti.com