Features
•Up to 6-A Output Current •5-V Input Voltage
•Wide-Output Voltage Adjust (0.9 V to 3.6 V)
•
Efficiencies up to 94 %•160 W/in³ Power Density •On/Off Inhibit
•Under-Voltage Lockout
•Output Current Limit
•Pre-Bias Startup Capability •Over-T emperature Protection •Surface Mountable
•Operating T emp: –40 to +85 °C •
饱和攻击
Safety Agency Approvals (Pending):UL 1950, CSA 22.2 950, EN60950& VDE
NOMINAL SIZE =0.75 in x 0.5 in
(19,05 mm x 12,7 mm)
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 ‘V in ’ and ‘V out ’ power connections. It is also the 0 VDC reference for the ‘Inhibit’ and ‘V o Adjust’ control input.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 open-circuit, the module will produce an output whenever a valid input source is applied.
Vo Adjust: A 0.1 W 1 % resistor must be directly connected between this pin and the GND pin to set the output voltage to a value higher than 0.9 V. The temperature stability of the resistor should be 100 ppm/°C (or better). The set point range for the output voltage is from 0.9 V to 3.6 V .The resistor required for a given output voltage may be calculated from the following 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.R set
= 10 k Ω ·
V out – 0.9 V
The specification table gives the preferred resistor values for a number of standard output voltages.
Ordering Information
Package Options (PTH05000x HH )(1)
Code
Description
Pkg Ref. (2)
AH Horiz. T/H
(EUS)AS
SMD, Standard (3)
(EUT)
Output Voltage (PTH05000H xx)
Code Voltage
0.9 V – 3.6 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.
Notes:(i)For operation below 0 °C the external capacitors must have stable characteristics. Use either a low ESR tantalum, Os-con, or ceramic capacitor.
(ii)During reflow of SMD package version do not elevate peak temperature of the module, pins or internal components above the stated maximum.
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 SET. The stated limit is unconditionally met if R SET has a tolerance of 1 %
with 100 ppm/°C or better temperature stability.
(3)The Inhibit control (pin 3) has an internal pull-up to Vin, and if left open-circuit the module will operate when input power is applied. A small low-
leakage (<100 nA) MOSFET is recommended to control this input. See application notes for more information.
(4)The regulator requires a minimum of 330 µF input capacitor with a minimum 300 mArms ripple current rating. For further information, consult the
related application note on Capacitor Recommendations.
(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 typical ESR for all the electrolytic (non-ceramic) output capacitance. Use 7 mΩ as the minimum when using max-ESR values to calculate.
Note A: Characteristic data has been developed from actual products tested at 25 °C. This data is considered typical data for the Converter.
v槽机
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.
Typical Characteristics
E f f i c i e n c y - %
R i p p l e - m V
P d - W a t t s
6-A, 5-V Input Non-Isolated
PTH05000W
Capacitor Recommendations for the PTH05000W Wide-Output Adjust Power Modules
Input Capacitor
The recommended input capacitor(s) is determined by the 330 µF minimum capacitance and 300 mArms mini-mum ripple current rating.
Ripple current, less than 300 mΩ equivalent series resis-tance (ESR), and temperature are the major considerations when selecting input capacitors. Unlike polymer tantalum, regular tantalum cap
acitors have a recommended mini-mum voltage rating of2 × (maximum DC voltage + AC ripple). This is standard practice to ensure reliability. For improved ripple reduction on the input bus, ceramic capacitors [2] may used to complement electrolytic types, and achieve the minimum required capacitance.
Output Capacitors (Optional)
For applications with load transients (sudden changes in load current), regulator response will benefit from an external output capacitance. The recommended output capacitance of 100 µF will allow the module to meet its transient response specification (see product data sheet). For most applications, a high quality computer-grade aluminum electrolytic capacitor is adequate. These capaci-tors provide decoupling over the frequency range, 2 kHz to 150 kHz, and are suitable for ambient temperatures above 0 °C. For operation below 0 °C tantalum, ceramic or Os-Con type capacitors are recommended. When using one or more non-ceramic capacitors, the calculated equiva-lent ESR should be no lower than 4 mΩ (7 mΩ using the manufacturer’s maximum ESR for a single capacitor). A list of preferred low-ESR type capacitors are identified in T able 1-1.
Ceramic Capacitors
Above 150 kHz the performance of aluminum electrolytic capacitors becomes less effective. T o further improve the reflected input ripple current [2] or the output transient response, multilayer ceramic capacitors can also be added. Ceramic capacitors have very low ESR and their resonant frequency is higher than the bandwidth of the regulator. When used on the output their combined ESR is not critical as long as the total value of ceramic capacitance does not exceed 300 µF. Also, to prevent the formation of local resonances, do not place more than five identical ce-ramic capacitors in parallel with values of 10 µF or greater. Tantalum Capacitors
T antalum type capacitors can be used at both the input and output, and are recommended for applications where the ambient operating temperature can be less than 0 °C. The AVX TPS, Sprague 593D/594/595 and Kemet T495/T510 capacitor series are suggested over many other tantalum types due to their higher rated surge, power dissipation, and ripple current capability. As a caution many general purpose tantalum capacitors have consid-erably higher ESR, reduced power dissipation and lower ripple current capability. These capacitors are also less reliable as they have lower power dissipation and surge current ratings. T antalum capacitors that do not have a stated ESR or surge current rating are not recommended for power applications.
When specifying Os-Con and polymer tantalum capacitors for the output, the minimum ESR limit will
be encoun-tered well before the maximum capacitance value is reached.
Capacitor Table
T able 1-1 identifies the characteristics of capacitors from a number of vendors with acceptable ESR and ripple current (rms) ratings. The recommended number of capacitors required at both the input and output buses is identified for each capacitor type.
This is not an extensive capacitor list. Capacitors from other vendors are available with comparable specifications. Those listed are for guidance. The RMS ripple current rating and ESR (at 100 kHz) are critical parameters necessary to insure both optimum regulator performance and long capacitor life. Designing for Very Fast Load Transients
The transient response of the DC/DC converter has been characterized using a load transient with a di/dt of 1 A/µs. The typical voltage deviation for this load transient is given in the data sheet specification table using the optional value of output capacitance. As the di/dt of a transient is increased, the response of a converter’s regu-lation circuit ultimately depends on its output capacitor decoupling network. This is an inherent limitation with any DC/DC converter once the speed of the transient exceeds its bandwidth capability. If the target application specifies a higher di/dt or lower vo
ltage deviation, the requirement can only be met with additional output capacitor decoupling. In these cases special attention must be paid to the type, value and ESR of the capacitors selected.
If the transient performance requirements exceed that specified in the data sheet, the selection of output ca-pacitors becomes more important. For further guidance consult the separate application note, “Selecting Output Capacitors for PTH Products in High-Performance Applica-tions.”
PTH05000 Series
Table 1-1: Input/Output Capacitors
[1] A total capacitance of 300 µF is acceptable based on the surge current capability of ceramic capacitors.
[2] A ceramic capacitor may be used to complement electrolytic types at the input to further reduce high-frequency ripple current.
/e p y T ,r o d n e V r o t i c a p a C )
e l y t S (s e i r e S s
c i t s i r e t c a r a h C r o t i c a p a C y
t i t n a u Q g n i k r o W e
g a t l o V )
F µ(e u l a V R S E .x a M z H k 001t a e l p p i R .x a M C
°58t a t n e r r u C )
s m r I (e
z i S l a c i s y h P )m m (t u p n I s u B t u p t u O s u B r
e b m u N r o d n e V c
i n o s a n a P )D M S (m u n i m u l A -y l o P ,A W )D M S (m u n i m u l A ,C F )D M S (m u n i m u l A ,K F )l a i d a R (m u n i m u l A ,C F V 01V 61V 61V 01F µ033F µ033F µ033F
µ033.0530Ω051.0Ω061.0Ω711.0Ω
A m 0082A m 076A m 006A
m 0558×9.601×2.018×2.018×5
.111111
琴谱架≤3≤3≤3≤3
P 121A 1A W F E E P 133C 1C F V E E P 133C 1K F V E E 1
33A 1C F U E E n o C –i m e h C d e t i n U )D M S (m u l A -y l o P ,A X P )
l a i d a R (n o c -s O ,S F )l a i d a R (m u n i m u l A ,Z X L )
D M S (n u m i m u l A ,Z V M )l a i d a R (m u n i m u l A -y l o P ,A S P V 01V 01V 61V 52V 3.6033F µF µ033F µ033033F µF µ093420.0Ω520.0Ω021.0Ω071.0Ω800.0ΩA m 0773A m 0053A m 555A m 054A m 080501×7.701×5.018×218×018×5.1111111≤3≤3≤3≤3≤1P T 08J M 133C V 01A X P M
033S F 01L L 21x 8M 133B V 61Z X L P T 01H M 133C V 52Z V M 11H M 093B V 3.6A S P m u n i m u l A n o c i h c i N )D M S (G W )
l a i d a R (M P V 61V 01033F µ033F µ051.0Ω061.0ΩA m 076A m 06401×018×5.1111≤3≤3S G 1R N M 133C 1G W U H H M 133A 1M P U o
y n a S )D M S (n o c -s O ,P V S )
l a i d a R (n o c -s O ,P S )D M S (r e m y l o P p a c s o P ,E P T V 01V 01V 3.6033F µF µ074F µ033520.0Ω510.0Ω520.0ΩA m 0073A m 0054A m 004201×801×5.01L 3.7×W 3.4111≤3≤2≤3X M 033P V S 01M 074P S 01L M 033E P T 6S P T m u l a t n a T X V A )
D M S (V 01V 01F µ033F µ03301.00Ω060.0ΩA m 0011A m 0002L 3.7×W 3.4×H 1.411≤3≤30010R 010M 733V S P T 0600R 010M 733V S P T )
D M S (t e m e K ,025T m
u n i m u l A y l o P .m u l A -y l o P c i n a g r O ,035T V 01V 01F µ033F µ033040.0Ω510.0ΩA m 0021A m 0011L 3.7×W 7.5×H 0.411≤3≤2S A 010M 733X 025T S A 010M 733X 035T e
u g a r p S -y a h s i V )D M S (m u l a t n a T ,D 495)D M S (m u l a t n a T ,D 595)D M S (n o c -s O ,P V S 49)l a i d a R (n o c -s O ,A S 49V 01V 01V 3.6V 3,6F µ033F µ033F µ033F µ033540.0Ω041.0Ω520.0Ω520.0ΩA m 0041A m 0001A m 0033A m 0053L 3.7×W 0.6×H
1.401×801×5.011111≤3≤3≤3≤3T 2R 0100X 733D 495T 2D 0100X 733D 5958F 3R 60X 733P V S 49P B F 3R 60X 733A S 49)
D M S (R 5X c i m a r e C ,t e m e K V 61V 3.60174200.0Ω200.0Ω—
e s a c 0121m m 52231]2[1]2[≤3≤2C A P 4M 601C 0121C C A P 9K 674C 0121C c i m a r e C ,a t a r u M R 5X )D M S (V 3.6V 3.6V 61V 61001742201200.0Ω
—
e s a c 0121m
m 52233]1[1]2[1]2[1]2[1≤≤2≤3≤3M 701J 06R E 23M R G M 674J 06R E 23M R G K 622C 16R E 23M R G K 601C 16R D 23M R G c i m a r e C ,K D T R 5X )D M S (V 3.6V 3.6V 61V
6100174220
1200.0Ω—
e s a c 0121m
m 52233]1[1]2[1]2[1]
2[1≤≤2≤3≤3
T M 701J 0R 5X 5223C T M 674J 0R 5X 5223C T M 622C 1R 5X 5223C T
M 601C 1R 5X 5223C
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