|
|
Part: PD01U
Category:
Power Management
-> Voltage References
-> Current Source
Description: High Current Pulse Driver
Company: Apex Microtechnology Corporation
Datasheet: Download PD01U datasheet File size : 156 kB
Request For quote: Find where to buy PD01U
Datasheet text preview:
HIGH CURRENT PULSE DRIVER
PD01
MICROTECHNOLOGY
HTTP://WWW.APEXMICROTECH.COM
(800) 546-APEX
(800) 546-2739
FEATURES
· · · · WIDE SUPPLY RANGE--200V UP TO 100A PULSE SOURCE THERMAL SHUTDOWN SOA SENTRYTM
APPLICATIONS
· HIGH POWER LASER DIODE DRIVER
DESCRIPTION
The PD01 is a precision pulse current source which can sink currents up to 100 amps and work off supply voltages up to 200V. The output current can be controlled by an analog input voltage or analog input and gate signal combination. By gating the analog input voltage it is possible to simultaneously amplitude modulate and pulse width modulate the output current. The PD01 has extensive circuitry that protects not only itself but the load as well. The temperature and instantaneous power dissipation of the output transistors is monitored. Excessive temperature or power dissipation will trip the SOA SentryTM alarm which shuts down the amplifier. If the output current does not reach the programmed level in 10µS the output is also shutdown and the U-C (under-current) output alarm is activated. Although used primarily as a pulse current source the PD01 can also be operated in a DC mode within its power dissipation limits.
BLOCK DIAGRAM AND EXTERNAL CONNECTIONS
APEX MICROTECHNOLOGY CORPORATION · TELEPHONE (520) 690-8600 · FAX (520) 888-3329 · ORDERS (520) 690-8601 · EMAIL prodlit@apexmicrotech.com
PD01
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +VS POWER DISSIPATION, internal TEMPERATURE, pin solder - 10s TEMPERATURE, junction2 TEMPERATURE, storage OPERATING TEMPERATURE RANGE, case
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
200V 500W 300°C 150°C -25°C to +100°C -25°C to +85°C
SPECIFICATIONS
PARAMETER TEST CONDITIONS1 MIN TYP MAX UNITS
ANALOG INPUT
INPUT PIN 2 LOGIC IN/OUT GATE, RESET, U-C SOA FAULT OUT POWER OUTPUT CURRENT, peak2 DUTY CYCLE, WITHIN SOA PULSE WIDTH RISE/FALL TIME ACCURACY, Io=100A OUTPUT VOLTAGE POWER SUPPLY VOLTAGE, VS VOLTAGE, VCC PROTECTION SOA VIOLATION SHUTDOWN SOA FAULT FLAG THERMAL RESISTANCE, junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case Full temperature range Full temperature range Meets full range specifications .25 8 25 +85 °C/W °C/W °C 10 5V Logic Levels 5 µsec V Full temperature range ± 15 200 ± 15.5 V V 100 10 1V full scale IO = 100A 1 3 100 DC 5 A % µsec µsec % V 0 2 V
5V Logic Levels
5
V
NOTES: 1. 2.
Unless otherwise noted: TC = 25°C, VS, VCC at typical specification. Guaranteed but not tested. The PD01 is constructed from MOSFET transistors. ESD handling procedures must be observed.
CAUTION
APEX MICROTECHNOLOGY CORPORATION · 5980 NORTH SHANNON ROAD · TUCSON, ARIZONA 85741 · USA · APPLICATIONS HOTLINE: 1 (800) 546-2739
OPERATING CONSIDERATIONS
PD01
SCALING
Refer to the block diagram of the PD01 for this discussion. Any analog input voltage up to 2V can be used to represent the full-scale output current of 100 amps. However, the protection circuits are scaled to consider 1V across the current sense resistor as 100 amps. The accuracy of the PD01 is also referenced to 1V full scale. In the case where 100 amps is the required full scale current connect Isense pin 6 to pin 7. When the full scale current is less than 100 amps scale the current sense resistor to produce 1V at the desired full scale current and divide down that voltage with R1 and R2 so that the correct voltage is supplied to ISENSE pin 6 to represent the actual current as a portion of the 100 amps full scale capability.
PROTECTION CIRCUITS AND START-UP CONDITIONS
When the commanded output current is not reached within about 10µS the PD01output is latched off and the U-C (undercurrent) pin 21 is set high. This will likely occur at power-up. It is therefore recommended that a power-up reset be implemented using the RESET pin (24). In addition it is recommended that the analog input (pin 2) be set to zero at powerup and that GATE pin 22 is required to be set high on powerup. The PD01 monitors the temperature of the output transistors as well as the output voltage and current and continually calculates the power dissipation in the output transistors. When the SOA of the output transistors is exceeded the output is latched off and the SOA FAULT pin 23 is set high.
STABILITY MODULATING THE OUTPUT
The output current can be set and modulated in two ways or a combination of the two ways: 1. When the GATE pin 22 is set high an analog input pulse can drive the output to the desired value (see Scaling below). 2. With a DC voltage on the analog input pin 2 set to the desired value the GATE pin 22 can be toggled to produce an output current pulse similar to the gate pulse. 3. Both the ANALOG INPUT voltage and GATE pins can be varied simultaneously to modulate the output in amplitude and time. Refer to the block diagram for this discussion. Circuit stability can be achieved by varying Rc in the block diagram. This will affect current rise time and overshoot. Experimentation is the best way to determine the value needed in the application circuit. The suggested starting value is 1k ohms.
POWER SUPPLIES
The small signal portion of the PD01 is power by ±15V. The supplies should be regulated and bypassed at the supply pins. An unregulated power supply must be used to power the laser diode otherwise a conflict develops between that regulated supply and the PD01 which can also be considered as a regulated supply.
DIP9 PACKAGE
WEIGHT: 69 g or 2.4 oz DIMENSIONS ARE IN INCHES ALTERNATE UNITS ARE [MM]
This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications prodlit@apexmicrotech.com APEX MICROTECHNOLOGY CORPORATION · TELEPHONE (520) 690-8600 · FAX (520) 888-3329 · ORDERS (520) 690-8601 · EMAILare subject to change without notice. PD01U REV. A JANUARY 2001 © 2001 Apex Microtechnology Corp.
Others parts begin by pd
PD-1 PD-2 PD-3 PD-4 PD-5 PD-6 PD-7 PD-8 PD-9 PD-10 PD-11 PD-12 PD-13 PD-14 PD-15 PD-16 PD-17 PD-18 PD-19 PD-20
|
|
|
