PPTC041LGBN-R datasheet(4/8 Pages) ETC2

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CONFIGURATION

The terminal block at the bottom-left of the board

(solder or screw terminals) provides the regulated

output and other signals from the EHE004. The

connections from left to right are:

GND – Electrical ground

VOUT – Regulated output voltage

VCAP – Test point for measuring the voltage across the

input capacitor(s). Additional capacitance can be

added between this terminal & GND as needed.

PGOOD – Active-high Power Good signal. This signal will

be high (true) when the output is in regulation

and will go low (false) when the output voltage

drops below 92% of its regulated value. This will

typically occur once the input voltage falls below

the UVLO threshold or if the maximum output

current is exceeded.

In addition, a low-voltage auxiliary power source, such

as a solar cell, can be added by soldering to the AUX+

and AUX- pads at the bottom-left corner of the board,

provided the source complies with the absolute

maximum

ratings

set

forth

above

(VAC

≤18V,

RSOURCE

>400OHMS, SW3=SUPERSERIES). A blocking

diode (400mV typical voltage drop) in series with the

AUX input prevents reverse leakage across the device.

REVISION N0. 002

REVISION DATE: 01-23-2013

Switch #1 (SW1)

– Piezo Connection

SERIES – SWITCH UP

PARALLEL – SWITCH DOWN

OUTPUT VOLTAGE

SWITCH #2 LEFT & RIGHT

00 = 1.8V = UP UP

10 = 3.3V = DOWN UP

01 = 2.5V = UP DOWN

11 = 3.6V = DOWN DOWN

Switch #2 (SW2)

– DC Output Setting

SWITCH UP FIRST DECIMAL BECOMES = 00

SWITCH DOWN FIRST DECIMAL BECOMES = 10

SWITCH UP SECOND DECIMAL BECOMES = 00

SWITCH DOWN SECOND DECIMAL BECOMES = 01

Switch #3 (SW3)

– Rectification Method

SUPERSERIES – SWITCH UP

NORMAL – SWITCH DOWN

CONNECTION INFORMATION

How do I configure the EHE

004?

Configuring the EHE004 is done by using the

combination of switches which appear on the top side

of the board. The switch at the top right, designated

SW3, controls the bridge rectifier connection. Place in

the “NORM” position (downward) for normal operation,

and the “SS” position for half-wave (“superseries”)

operation. The switch in the lower right hand side,

SW1, switches between parallel (downward, “Par.”

position) and series (upward, “Ser.” position) piezo

connection. The switch located in the top left hand

corner of the board, designated SW2, sets the output

voltage as marked below. In the legend below, the left

and right digit refer to the left and right toggle switch,

respectively, and the “1” or ON position is toward the

dot marked on the switch.

EHE004

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