HTC1500 / HTC3000 TEMPERATURE CONTROLLERS
June, 2011
HTC Series
Pb
RoHS
Compliant
Low Profile, Efficient
Temperature Controllers
GENERAL DESCRIPTION
The advanced and reliable circuitry of the HTC
series achieves 0.0009°C temperature stability. Its
small, low profile package is ideal for designs with
space constraints. The linear, PI control loop offers
maximum stability while the bipolar current source
has been designed for higher efficiency.
The HTC temperature controllers are easily
configured for any design. Virtually any type of
temperature sensor can be used with the HTC and a
built in sensor bias current source simplifies use with
resistive temperature sensors. The independently
adjustable Proportional Gain (P) and Integrator Time
Constant (I) can be modified to optimize temperature
overshoot and stability.
Other features offer added flexibility. A single
resistor sets the maximum output current to your
load. Add a diode to operate resistive heaters with a
unipolar output current. An onboard reference voltage
simplifies potentiometer control of the temperature
setpoint. You can also choose to operate remotely
with an external setpoint voltage. Two monitor pins
provide access to the temperature setpoint voltage
and the actual sensor voltage.
e
FEATURES
Compact Size - 1.5 and 3.0 A Models
Interfaces with Thermistors, IC Sensors, &
RTDs
Single supply operation +5 V to +12 VDC
(contact factory for higher voltage operation)
+11 V compliance with +12 V input
Stabilities as low as 0.0009°C
Temperature Setpoint, Output Current Limit,
Sensor Bias, Proportional Gain, and Integrator
Time Constant are User Adjustable
Monitor outputs for Temperature Setpoint and
Actual Temperature
Linear Bipolar or Unipolar Output operates
thermoelectrics or resistive heaters
ORDERING INFORMATION
Model
HTC1500-62
HTC3000-62
HTC1500
HTC3000
PWRPAK-5V
PWRPAK-12V
HTCEVAL PCB
HTCHTSK
THERM-PST
Description
1.5 A Temp Controller (for 0.062” board)
3.0 A Temp Controller (for 0.062” board)
1.5 A Temp Controller (for 0.031” board)
3.0 A Temp Controller (for 0.031” board)
+5 V @ 8 A Power Supply
+12 V @ 3 A Power Supply
Evaluation Board, 0.062” thick
(Includes HTC Heatsink, and thermal grease)
Heatsink for HTC
Thermal grease
Figure 1
HTC Series Pin-Out, Top View
HTC Temperature Controller
1 - Limit -
2 - Limit +
3 - PID Out
4 - V REF Out
5 - Common
6 - ACT T Monitor
7 - SET T Monitor
8 - SetpointInput
9 - V+
10 - GND
11 - TEC +
12 - TEC -
13 - Sensor +
14 - Sensor -
15 - R
BIAS
+
16 - R
BIAS
-
17 - R
PROP
+
18 - R
PROP
-
19 - C
INT
+
20 - C
INT
-
© 2011
HTC1500-00400-L
www.teamwavelength.com
HTC1500 / HTC3000 TEMPERATURE CONTROLLERS
PAGE 2
Figure 2
Quick Connect
This diagram shows HTC connections for basic operation.
Details for each component are on pages 7 & 8.
Set Current Limit with
trimpot or resistor.
Install diode
(1N4148) for
HEATING ONLY
Unipolar operation
Jumper
for
Bipolar
Operation
NTC sensor
PTC sensor
Operate from single +5 V
to +12 VDC power supply
V+
(+5 V to +12 V)
9
10
6
V+
GND (for pin 9)
ACT T Monitor
SET T Monitor
Common
Setpoint Input
3.675 V REF OUT
Measure Temperature Setpoint
& Actual Temperature
+
-
LIMIT -
LIMIT +
PID OUT
TEC +
TEC -
1
2
3
11
12
R
Limit
External
Voltmeter
}
R
T
7
5
Control Temperature Setpoint with
resistor, trimpot, or external voltage.
Set Proportional Gain
between 1 and 100.
Fixed,
Metal Film
1M
8
4
Thermoelectric Module
[Resistive Heater
can be used]
+8 V (minimum)
AD590
10k
R
Prop Gain
17 RPROP +
18 RPROP -
19 CINT +
SENSOR +
Thermistor,
RTD, or LM335
13
OR
SENSOR - 14
RBIAS +
15
OR
C
INT
20 CINT -
RBIAS - 16
R
Sensor Bias
Set Integrator Time Constant
between 0 and 10 seconds
Install a 1 M resistor to remove
Select R
Sensor Bias
value to optimize
feedback voltage on
pins 13 & 14
Figure 3
Test Load Configuration
(for confirming connections and settings)
TEC +
TEC -
11
12
0.1
10 W
SENSOR +
SENSOR -
13
14
Simulated
Sensor
Values shown can simulate any
load up to the HTC Series
maximum of 3 A.
© 2011
HTC1500-00400-L
www.teamwavelength.com
HTC1500 / HTC3000 TEMPERATURE CONTROLLERS
ELECTRICAL AND OPERATING SPECIFICATIONS
PAGE 3
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (Voltage on Pin 9 -
contact factory for higher V operation
)
Output Current (See SOA Chart)
Power Dissipation, T
AMBIENT
= +25˚C (See SOA Chart)
Operating Temperature, case
Storage Temperature
SYMBOL VALUE
V+
I
OUT
P
MAX
T
OPR
T
STG
+5 to +12
±1.5
(HTC1500)
±3.0
(HTC3000)
9
0 to +50
-40 to +125
UNIT
Volts DC
Amps
Watts
˚C
˚C
OPERATING PARAMETER
TEMPERATURE CONTROL
Short Term Stability (1-hr)
Short Term Stability (1-hr)
Long Term Stability (24-hr)
CONTROL LOOP
P (Proportional Gain)
I (Integrator Time Constant)
Setpoint vs. Actual T Accuracy
OUTPUT, THERMOELECTRIC
Current, peak, see SOA Chart
Compliance Voltage,
Pin 11 to Pin 12
Temperature Range
Current Limit Range
(±2% FS Accuracy)
Output Power
contact factory
for higher power operation
POWER SUPPLY
Voltage, V+
SENSORS
Sensor Bias Current Range
Resistive Sensor Type
IC Sensor Types
isolated from each other.
9
TEST CONDITIONS
OFF ambient temperature
ON ambient temperature
OFF ambient temperature
MIN
TYP
0.0009
0.002
0.0015
MAX UNITS
˚C
˚C
˚C
100
10
P
1
0
Rev B
Rev C, D, & E
HTC1500
HTC3000
Full Temp. Range
I
OUT
= 500 mA
I
OUT
= 1.5 A
I
OUT
= 3 A
HTC1500
HTC3000
HTC1500
HTC3000
0.2
±1.4
±2.8
PI
A/V
Sec.
mV
Amps
Amps
Volts
Volts
Volts
mA
mA
<10%
2
±1.5
±2.9
V+ - 0.13
V+ - 0.75
V+ - 1.33
0-1500
0-3000
12
24
5
200
1
10m
12
5
±1.6
±3.0
Watts
Watts
V
mA
A
Current, V+ supply, quiescent
Thermistors, RTDs
AD590, LM335
If thermistor, TE module, or laser diode are case-common, the laser diode driver and TE controller power supplies must be
Stability quoted for a typical 10 k thermistor at 100
A
sensing current.
For details, refer to TN-TC02 :
How is
Temperature Stability Measured?.
(http://www.teamwavelength.com/downloads/notes/tn-tc02.pdf#page=1)
User configurable with external resistor.
User configurable with external capacitor.
Compliance voltage will vary depending on power supply voltage and output current.
Temperature Range depends on the physical load, sensor type, input voltage, and TE module used.
Output power is limited by internal power dissipation and maximum case temperature. See SOA chart to calculate internal
AD590 requires an external bias voltage and 10 k resistor.
9
Contact factory for higher voltage operation up to 30V.
Size (H x W x D)
0.34" x 2.65" x 1.6"
[8.6 x 67 x 41 mm]
Weight
Connectors
< 1.5 oz.
20 pin header, 0.1” spacing
Required Heatsink Capacity
5.6 °C / W / 3 in
power dissipation. Damage to the HTC will occur if case temperature exceeds 50°C.
A compliance voltage of
10.7
V will
be obtained with +12 volts input at 3 A. A compliance voltage of
3.7 V will be obtained with +5 V input and 3 A. +5 V
operation will limit the setpoint voltage to 3.5 V, thus limiting the temperature range of the HTC. NOTE: Compliance voltage
for Revision B was limited to
8
volts for +12V input.
Warm-up
1 hour to rated accuracy
© 2011
HTC1500-00400-L
www.teamwavelength.com
HTC1500 / HTC3000 TEMPERATURE CONTROLLERS
PIN DESCRIPTIONS
PAGE 4
PIN NO. PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
LIMIT-
LIMIT+
PID OUT
V REF OUT
COMMON
ACT T MONITOR
SET T MONITOR
SETPOINT INPUT
V+
GND
TEC+
TEC-
SENSOR+
SENSOR-
R
BIAS
+
R
BIAS
-
R
PROP
+
R
PROP
-
C
INT
+
C
INT
-
FUNCTION
Resistor value of 0
to 1 M between pins 1 & 2 limits maximum output current.
Short pins 2 & 3 for bipolar operation.
Install diode for unipolar operation (see page 7, step 1 for polarity).
3.675 Volt Reference
shorted to pin 10.
Temperature voltage monitor. Buffered measurement of voltage across Sensor +
& Sensor -. [1 k output impedance for Revisions B & D]
Setpoint voltage monitor. Buffered measurement of the setpoint input (pin 8).
[1 k output impedance for Revisions B & D]
Remote Setpoint voltage input. Input impedance = 1 M.
Range: 0 to V+ - 1.3 V. Damage threshold: Setpoint < -0.5 V or Setpoint > V+.
Supply voltage input. +5 V to +12 V. Contact Factory for higher voltage operation.
Power Supply Ground. Used with pin 9 for high current return.
TEC+ & TEC- supply current to the TE module. With NTC sensors, connect TEC+
to positive lead of TE module. With PTC sensors, connect TEC- to positive lead
of TE module.
A sensor bias current will source from Sensor+ to Sensor- if a resistor is tied
across R
BIAS
+ and R
BIAS
-. Connect a 10 k resistor across Sensor+ & Sensor-
when using an AD590 temperature sensor. See page 7, step 4.
Resistance between pins 15 & 16 selects sensor current from 1
A
to 10 mA.
Range is 0
to 1 M.
Resistance between pins 17 & 18 selects Proportional Gain between 1 & 100.
Range is 0
to 495 k.
Capacitance between pins 19 & 20 sets the Integral Time Constant between
0 and 10 seconds. 0 seconds (OFF) = 1 M resistor
0.1 to 10 seconds = 0.1
F
to 10
F.
< 50 ppm stability
(15 ppm typical)
Measurement ground. Low current return used only with pins 6, 7, & 8. Internally
REVISION HISTORY NOTES
CHANGE:
Lot # Location
(third digit indicates Revision)
REVISION B
REVISIONS C & D
(April & July 2004)
REVISION E
(July 2009)
Efficiency Increase:
Compliance Voltage
Setpoint vs. Actual accuracy
Improved stability of
Reference Voltage (pin 4)
Temperature Stability:
1-hour OFF ambient
1-hour ON ambient
24-hour OFF ambient
© 2011
V+ minus 3 to 4 V
10%
V+ minus 0.17 to 2.7 V
5 mV
< 100A droop when
I > 1 Amp
V+ minus 0.13 to 2.3 V
15 ppm (typical)
0.0009°C
0.002°C
0.0015°C
HTC1500-00400-L
www.teamwavelength.com
HTC1500 / HTC3000 TEMPERATURE CONTROLLERS
SAFE OPERATING AREA & HEATSINK REQUIREMENTS
PAGE 5
Caution:
Do not exceed the Safe Operating Area (SOA). Exceeding the SOA voids the warranty.
An online tool for calculating Safe Operating Area is available at:
http://www.teamwavelength.com/support/calculator/soa/soatc.php .
To determine if the operating parameters fall within the SOA of the device, the maximum voltage drop across the
controller and the maximum current must be plotted on the SOA curves.
These values are used for the example SOA determination:
V+ = 12 volts
V
LOAD
= 5 volts
I
LOAD
= 1 amp
Follow these steps:
1.
2.
3.
4.
5.
6.
Determine the maximum voltage drop across the controller, V+ - V
LOAD
, and mark on the X axis.
(12 volts - 5 volts = 7 volts, Point A)
Determine the maximum current, I
LOAD
, through the controller and mark on the Y axis:
(1 amp, Point B)
Draw a horizontal line through Point B across the chart. (Line BB)
Draw a vertical line from Point A to the maximum current line indicated by Line BB.
Mark V+ on the X axis. (Point C)
Draw the Load Line from where the vertical line from point A intersects Line BB down to Point C.
}
These values are determined from the specifications of the TEC or resistive heater
This chart assumes you have appropriately heatsunk the HTC.
HTC Safe Operating Area
25 C Ambient
50 C Case Maximum
HTC3000
Current
Limit
B
BB
HTC1500
Current
Limit
C
A
(7 V)
(12V)
© 2011
HTC1500-00400-L
www.teamwavelength.com
