EN5394QI-E Enpirion, EN5394QI-E Datasheet

Power Management Modules & Development Tools Eval Bd 9A Syn Buck PWM DC-DC Converter

EN5394QI-E

Manufacturer Part Number
EN5394QI-E
Description
Power Management Modules & Development Tools Eval Bd 9A Syn Buck PWM DC-DC Converter
Manufacturer
Enpirion
Type
DC/DC Switching Converters, Regulators & Controllersr
Datasheet

Specifications of EN5394QI-E

Input Voltage
2.375 V to 6.6 V
Output Voltage
0.6 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Product
Power Management Modules
For Use With/related Products
EN5394QI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Introduction
Thank you for choosing Enpirion, the source for Ultra small foot print power
converter products. This user guide should be used together with the latest
device datasheet.
Enpirion EN5364QI 6A and EN5394QI 9A
• The EN5364QI and EN5394QI (collectively referred to as EN53x4QI in the
• The EN53x4QI device is feature rich and supports the following additional
DCDC Converter w/Integrated Inductor
remainder of this document) features integrated inductor, power
MOSFETS, Controller, bulk of the compensation Network, and protection
circuitry against system faults. This level of integration delivers a
substantial reduction in footprint and part count over competing solutions.
However, the evaluation board is not optimized for minimum footprint;
rather for engineering ease of evaluation through programming options,
clip leads, test points etc.
functions:
o
o
o
o The delay is programmable by means of a single resistor
o
Margining
±10% about the nominal, under digital control using ternary pins
MAR[1:2] Margining is highly valued for system robustness
verification and reliability studies. Note: POK automatically scales
with margining.
Phase Lock
locked to an external clock source (or another EN53x4QI) by
connecting such a clock source to pin S_IN. This feature is highly
valued to keep beat frequencies (between a system sampling clock
and the DC/DC converter switching frequency) out of the desired
signal band.
Delay
PWM signal) is available at pin S_OUT. This may be input to
another EN53x4QI device.
connected between pin S_delay and AGND. This feature allows the
control of input ripple when multiple EN53x4QI devices are used on
a system board.
Pre-bias operation
provided), the device will monotonically ramp-up its output voltage
from a pre-bias voltage level to the programmed output voltage
level under control of Enable signal. The pre-bias (Back-feed)
- A delayed version of the internal switching clock (or the
EN5364QI-EN5394QI Evaluation Board Application Note
Evaluation Board
– The output voltage can be changed by ±2.5%, ±5% or
- The internal switching frequency can be phase
– When the device pre-bias is enabled (jumper
Page 1 of 10
November 2009 V_3

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EN5394QI-E Summary of contents

Page 1

... Thank you for choosing Enpirion, the source for Ultra small foot print power converter products. This user guide should be used together with the latest device datasheet. • The EN5364QI and EN5394QI (collectively referred to as EN53x4QI in the remainder of this document) features integrated inductor, power MOSFETS, Controller, bulk of the compensation Network, and protection circuitry against system faults ...

Page 2

... EN5364QI-EN5394QI Evaluation Board Application Note voltage may be coupled to the output via a diode. This diode (D2) is populated on the board. Back-feed voltage may be applied at BF_IN (TP18) Parallel Mode operation o operated in parallel when load currents greater than 6A/9A is desired. In parallel mode, one device is designated the Master and devices operate in slave mode, controlled by the Master ...

Page 3

... EN5364QI-EN5394QI Evaluation Board Application Note • The phase delay is set by connecting a resistor from S_delay to AGND. The delay is approximately: Delay (nsec) = 2*[S_delay resistance in kΩ.] A 49.9kΩ (populated on Evaluation board) resistor value delays the clock signal by ~100nsec. • EN53x4QI supports pre-bias mode operation. To use this option set the EN_PB jumper to pre-bias enable position with device powered down ...

Page 4

... EN5364QI-EN5394QI Evaluation Board Application Note Figure - 1 : Output voltage programming and loop compensation. R correspond R17 & C20 on the board. R R13, R14, R16, or R18 on the board, depending on which jumpers are populated on J13. 2.5V Rext 250 VIN AGND IC Package Quick Start Guide VIN SIDE Figure – ...

Page 5

... EN5364QI-EN5394QI Evaluation Board Application Note Figure – J13 Voltage Selection Jumpers In Figure 4, output Voltages, from left to right, are 0.804V, 0.998V, 1.2V and 1.0V.Jumper as shown, selects 1.2V output. Higher output voltages can be achieved by populating multiple J13 jumper positions. See Figures 1 and 7. CAUTION: Except for ENA, NONE of the J1 & ...

Page 6

... EN5364QI-EN5394QI Evaluation Board Application Note MAR-1 Float Low High Low High Low High Float Float Table-1 : Margin Block Truth Table STEP 7: Phase Lock – Disable device by moving ENA jumper. Power down the device. Connect a pulse generator (properly terminated and output disabled) signal between S_IN and GND. Set the pulse amplitude to swing from 0 to 2.5 volts. Set the pulse frequency to 4MHz. Connect oscilloscope probes to S_IN & ...

Page 7

... EN5364QI-EN5394QI Evaluation Board Application Note Figure – Evaluation Board Layout. Page November 2009 V_3 ...

Page 8

... EN5364QI and approximately 100uF for the EN5394QI. The board is populated with a 47uF, 1206, X5R and a 10uF, 0805, X7R capacitor for the EN5364QI and 2 x 47uF, 1206, X5R capacitor for the EN5394QI evaluation board. NOTE: Capacitors must be X5R or X7R dielectric formulations to ensure adequate capacitance over operating voltage and temperature ranges ...

Page 9

... EN5364QI-EN5394QI Evaluation Board Application Note AGND VFB AGND GND OUT R1 TP22 J10 VOUT TP19 R2 C10 TP7 TP6 R6 VSENSE J2 J3 AGND TP11 VOUT J7 VOUT TP18 Eval Board Input Protection PVIN S2A AGND Sync Delay Programming S_DEL Top turn pot R5 R10 AGND Figure – Evaluation Board Schematic ...

Page 10

... EN5364QI-EN5394QI Evaluation Board Application Note Contact Information Enpirion, Inc. Perryville III 53 Frontage Road, Suite 210 Hampton, NJ 08827 Phone: +1-908-894-6000 Fax: +1-908-894-6090 www.enpirion.com Enpirion reserves the right to make changes in circuit design and/or specifications at any time without notice. Information furnished by Enpirion is believed to be accurate and reliable. Enpirion assumes no responsibility for its use or for infringement of patents or other third party rights, which may result from its use ...

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