TEXAS INSTRUMENTS SLTS214C Technical data

Auto-Track™

Sequencing

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PTH12050W/L —12-V Input

6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module

NOMINAL SIZE = 0.87 in x 0.5 in

(22,1 mm x 12,57 mm)

Description

The PTH12050 series is the smallest non-isolated power modules from Texas Instruments that features Auto-Track™ Sequencing. Auto-Track simplifies the sequencing of supply voltages in power systems by enabling modules to track each other, or any other external voltage, during power up and power down.

Although small in size (0.87 in × 0.5 in),

these modules are rated for up to 6 A of output current, and are an ideal choice in applications where space, performance, and a power-up sequencing capability are important attributes.

The series operates from an input voltage of 12-V to provide step-down conversion to a wide range of output volt-

Features

• Up to 6-A Output Current

• 12-V Input Voltage

• Wide-Output Voltage Adjust

(1.2 V to 5.5 V)/(0.8 V to 1.8 V)

• Efficiencies up to 93 %

• 200 W/in³ Power Density

• On/Off Inhibit

• Under-Voltage Lockout

• Operating Temp: –40 to +85 °C

ages. The output voltage of the W-suffix device may set to any voltage over the adjust range, 1.2 V to 5.5 V. The L-suffix device has an adjustment range of 0.8 V to 1.8 V. The output voltage is set within the adjustment range using a single external resistor.

Other operating features include an

on/off inhibit, output voltage adjust (trim), and output over-current protection. For high efficiency these parts employ a synchronous rectifier output stage.

Target applications include telecom,

industrial, and general purpose circuits, including low-power dual-voltage systems that use a DSP, microprocessor, ASIC, or FPGA.

• Auto-Track™ Sequencing

• Output Over-Current Protection

• IPC Lead Free 2

• Safety Agency Approvals:

• Point-of-Load Alliance (POLA)

SLTS214C – MAY 2003 – REVISED MARCH 2003

(Non-Latching, Auto-Reset)

UL 60950, cUL 600950, EN60950 (VDE is Pending)

Compatible

Pin Configuration

Pin Function

1 GND 2 Track 3V

4 Inhibit * 5Vo Adjust 6V

out

* Denotes negative logic:

Open = Normal operation Ground = Function active

Standard Application

Track

100 µF (Required)

Inhibit

GND

For technical support and further information, visit http://power.ti.com

10 µF Ceramic

1 2 3 4

PTH12050 (Top View)

SET

1 %, (Required)

100 µF (Optional)

= Required to set the output voltage higher than

set

the lowest value. (See spec. table for values)

= Required 100 µF capacitor

= 10 µF ceramic capacitor. Required for output

voltages 3.3 V and higher

= Optional 100 µF capacitor

OUT

GND

PTH12050W/L —12-V Input

6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module

Ordering Information

Output Voltage

Code Voltage

W 1.2 V – 5.5 V (Adjust) L 0.8 V – 1.8 V (adjust)

Notes: (1) Add “T” to end of part number for tape and reel on SMD packages only.

(2) Reference the applicable package reference drawing for the dimensions and PC board layout (3) “Standard” option specifies 63/37, Sn/Pb pin solder material.

(PTH12050Hxx)

Package Options

Code Description Pkg Ref.

AH Horiz. T/H (EUU) AS SMD, Standard

(PTH12050xHH)

Pin Descriptions

Vin: The positive input voltage power node to the mod-

ule, which is referenced to common GND.

Vout: The regulated positive power output with respect to the GND node.

GND: This is the common ground connection for the Vin and Vout power connections. It is also the 0 VDC reference for the control inputs.

Vo Adjust: A 1 % resistor must be directly connected between this pin and GND (pin 1) to set the output voltage of the module to a value higher than its lowest value. The temperature stability of the resistor should be 100 ppm/°C (or better). The set-point range is 1.2 V to

5.5 V for W-suffix devices, and 0.8 V to 1.8 V for L-suffix devices. The resistor value required for a given output voltage may be calculated using a formula. If left open circuit, the output voltage will default to its lowest value. For further information on output voltage adjustment consult the related application note.

The specification table gives the preferred resistor values for a number of standard output voltages.

SLTS214C – MAY 2003 – REVISED MARCH 2003

(1)

(2)

(3)

(EUV)

Inhibit: The Inhibit pin is an open-collector/drain negative logic input that is referenced to GND. Applying a low-level ground signal to this input disables the module’s output and turns off the output voltage. When the Inhibit control is active, the input current drawn by the regulator is significantly reduced. If the Inhibit pin is left opencircuit, the module will produce an output whenever a valid input source is applied.

Track: This is an analog control input that enables the output voltage to follow an external voltage. This pin becomes active typically 20 ms after the input voltage has been applied, and allows direct control of the output voltage from 0 V up to the nominal set-point voltage. Within this range the output will follow the voltage at the Track pin on a volt-for-volt basis. When the control voltage is raised above this range, the module regulates at its set-point voltage. The feature allows the output voltage to rise simultaneously with other modules powered from the same input bus. If unused, the input should be connected to V

. Note: Due to the under-voltage lockout

feature, the output of the module cannot follow its own input voltage during power up. For more information, consult the related application note.

Environmental & Absolute Maximum Ratings (Voltages are with respect to GND)

Characteristics Symbols Conditions Min Typ Max Units

Track Input Voltage V Operating Temperature Range T Solder Reflow Temperature T Storage Temperature T Mechanical Shock Per Mil-STD-883D, Method 2002.3

Mechanical Vibration Mil-STD-883D, Method 2007.2

Weight — — 2.9 — grams Flammability — Meets UL 94V-O

Notes: (i) During reflow of SMD package version do not elevate peak temperature of the module, pins or internal components above the stated maximum.

track

reflow

Over Vin Range –40 — 85 °C Surface temperature of module body or pins 235 — –40 — 125 °C

1 msec, ½ Sine, mounted

20-2000 Hz

–0.3 — Vin + 0.3 V

(i)

— 500 — G’s

—20— G’s

For technical support and further information, visit http://power.ti.com

°C

PTH12050W —12-V Input

6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module

Specifications (Unless otherwise stated, T

=25 °C, Vin =12 V, V

=3.3 V, C1=100 µF, C2 =10 µF, C3 =0 µF, and Io =Iomax)

out

SLTS214C – MAY 2003 – REVISED MARCH 2003

PTH12050W

Characteristics Symbols Conditions Min Typ Max Units

Over ∆V

Output Current I

Input Voltage Range V

range 85 °C, 400 LFM airflow 0 — 6

adj

60 °C, natural convection 0 — 6

Over Io range 10.8 — 13.2 V

Set-Point Voltage Tolerance Vo tol — — ±2 Temperature Variation ∆Reg Line Regulation ∆Reg Load Regulation ∆Reg Total Output Variation ∆Reg

Ouput Voltage Adjust Range ∆V

temp

line

load

tot

adj

Efficiency η I

Vo Ripple (pk-pk) V

–40 °C <Ta < +85 °C — ±0.5 — %V Over Vin range — ±5 — mV Over Io range — ±5 — mV Includes set-point, line, load,

–40 °C ≤ Ta ≤ +85 °C

——±3

Over Vin range 1.2 — 5.5 V

=5 A R

20 MHz bandwidth V

= 280 Ω Vo = 5.0 V — 93 —

SET

= 2.0 kΩ Vo = 3.3 V — 91 —

SET

= 4.32 kΩ Vo = 2.5 V — 89 —

SET

= 8.06 kΩ Vo = 2.0 V — 88 — %

SET

= 11.5 kΩ Vo = 1.8 V — 87 —

SET

= 24.3 kΩ Vo = 1.5 V — 86 —

SET

= open cct V

SET

= 1.2 V — 84 —

≤2.5 V — 25 — mVpp

>2.5 V — 1 — % V

(1) (1)

(2)

Over-Current Threshold Io trip Reset, followed by auto-recovery — 14 — A Transient Response 1 A/µs load step, 50 to 100 % I

∆V

=100 µF

Track Input Current (pin 2) IIL track Pin to GND — — –0.13 Track Slew Rate Capability dV Under-Voltage Lockout UVLO V

Inhibit Control (pin 4) Referenced to GND Input High Voltage V

Input Low Voltage Input Low Current

V I

track

IH IL

inhibit

/dt C

≤C

(max) — — 1 V/ms

out

increasing — 9.5 10.4

Vin decreasing 8.8 9 —

Pin to GND — –0.24 — mA

max,

Recovery Time — 70 — µSec

Vo over/undershoot — 100 — mV

Vin –0.5 — Open –0.2 — 0.5

(3)

Input Standby Current Iin inh Inhibit (pin 4) to GND, Track (pin 2) open — 10 — mA Switching Frequency ƒ External Input Capacitance C External Output Capacitance C

Reliability MTBF Per Bellcore TR-332

Notes:

(1) See SOA curves or consult factory for appropriate derating. (2) The set-point voltage tolerance is affected by the tolerance and stability ofR

with 100 ppm/°C or better temperature stability.

(3) This control pin has an internal pull-up to the input voltage Vin (7.5 V for pin 2). If it is left open-circuit the module will operate when input power is

applied. A small low-leakage (<100 nA) MOSFET is recommended for control. For further information, consult the related application note.

(4) A 100 µF electrolytic input capacitor is required for proper operation. The electrolytic capacitor must be rated for a minimum of 750 mA rms of ripple

current. An additional 10 µF ceramic capacitor is required for output voltages 3.3 V and higher. For further information, consult the related application

note on capacitor selection. (5) An external output capacitor is not required for basic operation. Adding 100 µF of distributed capacitance at the load will improve the transient response. (6) This is the calculated maximum. The minimum ESR limitation will often result in a lower value. Consult the application notes for further guidance. (7) This is the typcial ESR for all the electrolytic (non-ceramic) output capacitance. Use 7 m

Over Vin and Io ranges 260 320 380 kHz

(4)

100

Capacitance value non-ceramic 0 100

Equiv. series resistance (non-ceramic) 4

50 % stress, Ta =40 °C, ground benign

SET

ceramic 0 — 300

(7)

5.9 — — 10

. The stated limit is unconditionally met if R

Ω

as the minimum when using max-ESR values to calculate.

——µF

(5)

3,300

(6)

——

has a tolerance of 1 %

SET

µF

Hrs

For technical support and further information, visit http://power.ti.com

PTH12050W —12-V Input

)

Typical Characteristics

6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module

PTH12050W Characteristic Data; Vin =12 V (See Note A)

Efficiency vs Load Current

100

OUT

5.0 V

3.3 V

2.5 V

2.0 V

1.8 V

1.5 V

1.2 V

OUT

5.0 V

3.3 V

2.5 V

2.0 V

1.8 V

1.5 V

1.2 V

Efficiency - %

0123456

Output Ripple vs Load Current

Ripple - mV

Iout - Amps

SLTS214C – MAY 2003 – REVISED MARCH 2003

PTH12050W Safe Operating Area; Vin =12 V (See Note B)

All Output Voltages

Ambient Temperature (°C)

0123456

Iout (A

Airflow

400LFM 200LFM 100LFM Nat Conv

0123456

Power Dissipation vs Load Current

Pd - Watts

0123456

Iout - Amps

OUT

5.0 V

3.3 V

2.5 V

2.0 V

1.8 V

1.5 V

1.2 V

Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter. Note B: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures. Derating limits apply to

modules soldered directly to a 4 in.

4 in. double-sided PCB with 1 oz. copper.

For technical support and further information, visit http://power.ti.com

PTH12050L —12-V Input

6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module

Specifications (Unless otherwise stated, T

=25 °C, Vin =12 V, V

=1.8 V, C1=100 µF, C2 =10 µF, C3 =0 µF, and Io =Iomax)

out

SLTS214C – MAY 2003 – REVISED MARCH 2003

PTH12050L

Characteristics Symbols Conditions Min Typ Max Units

Over ∆V

Output Current I

Input Voltage Range V

range 85 °C, 400 LFM airflow 0 — 6

adj

60 °C, natural convection 0 — 6

Over Io range 10.8 — 13.2 V

Set-Point Voltage Tolerance Vo tol — — ±2 Temperature Variation ∆Reg Line Regulation ∆Reg Load Regulation ∆Reg Total Output Variation ∆Reg

Ouput Voltage Adjust Range ∆V

temp

line

load

tot

adj

Efficiency η I

Vo Ripple (pk-pk) V

–40 °C <Ta < +85 °C — ±0.5 — %V Over Vin range — ±5 — mV Over Io range — ±5 — mV Includes set-point, line, load,

–40 °C ≤ Ta ≤ +85 °C

——±3

Over Vin range 0.8 — 1.8 V

=5 A R

20 MHz bandwidth Vo >1.0 V — 30 —

= 130 Ω Vo = 1.8 V — 88 —

SET

= 3.57 kΩ Vo = 1.5 V — 87 —

SET

= 12.1 kΩ Vo = 1.2 V — 85 — %

SET

= 32.4 kΩ Vo = 1.0 V — 83 —

SET

= open cct V

SET

= 0.8 V — 81 —

≤1.0 V — 20 —

(1) (1)

(2)

Over-Current Threshold Io trip Reset, followed by auto-recovery — 14 — A Transient Response 1 A/µs load step, 50 to 100 % Iomax,

∆V

Track Input Current (pin 2) IIL track Pin to GND — — –0.13 Track Slew Rate Capability dV

/dt C

track

Under-Voltage Lockout UVLO Vin increasing — 9.5 10.4

Inhibit Control (pin 4) Referenced to GND Input High Voltage V

Input Low Voltage Input Low Current

V I

IH IL

inhibit

=100 µF

≤C

(max) — — 1 V/ms

out

Recovery Time — 70 — µSec

Vo over/undershoot — 100 — mV

(3)

Vin decreasing 8.8 9 —

Vin –0.5 — Open –0.2 — 0.5

(3)

Pin to GND — –0.24 — mA Input Standby Current Iin inh Inhibit (pin 4) to GND, Track (pin 2) open — 10 — mA Switching Frequency ƒ External Input Capacitance C External Output Capacitance C

Reliability MTBF Per Bellcore TR-332

Notes:

(1) See SOA curves or consult factory for appropriate derating. (2) The set-point voltage tolerance is affected by the tolerance and stability ofR

with 100 ppm/°C or better temperature stability.

(3) This control pin has an internal pull-up to the input voltage Vin (7.5 V for pin 2). If it is left open-circuit the module will operate when input power is

applied. A small low-leakage (<100 nA) MOSFET is recommended for control. For further information, consult the related application note.

(4) A 100 µF electrolytic input capacitor is required for proper operation. The electrolytic capacitor must be rated for a minimum of 750 mA rms of ripple

current. An additional 10 µF ceramic capacitor is required for output voltages 3.3 V and higher. For further information, consult the related application

Over Vin and Io ranges 200 250 300 kHz

(4)

100

Capacitance value non-ceramic 0 100

Equiv. series resistance (non-ceramic) 4

50 % stress, Ta =40 °C, ground benign

SET

ceramic 0 — 300

(7)

5.9 — — 10

. The stated limit is unconditionally met if R

Ω

as the minimum when using max-ESR values to calculate.

——µF

(5)

3,300

(6)

——

has a tolerance of 1 %

SET

mVpp

µF

Hrs

For technical support and further information, visit http://power.ti.com

PTH12050L —12-V Input

)

Typical Characteristics

6-A, 12-V Input Non-Isolated Wide-Output Adjust Power Module

PTH12050L Characteristic Data; Vin =12 V (See Note A)

Efficiency vs Load Current

100

Efficiency - %

0123456

Output Ripple vs Load Current

Ripple - mV

Iout - Amps

OUT

1.8 V

1.5 V

1.2 V

1.0 V

0.8 V

OUT

1.8 V

1.5 V

1.2 V

1.0 V

0.8 V

SLTS214C – MAY 2003 – REVISED MARCH 2003

PTH12050L Safe Operating Area; Vin =12 V (See Note B)

PTH12050L; V

Ambient Temperature (°C)

0123456

OUT

≤≤

≤1.8 V

≤≤

Iout (A

Airflow

100LFM Nat conv

0123456

Power Dissipation vs Load Current

1.8

1.5

1.2

0.9

Pd - Watts

0.6

0.3

0123456

Iout - Amps

OUT

1.8 V

1.5 V

1.2 V

1.0 V

0.8 V

modules soldered directly to a 4 in.

4 in. double-sided PCB with 1 oz. copper.

For technical support and further information, visit http://power.ti.com

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