PT4210 Series —48V 5-7 Watt Low-Profile Isolated DC-DC Converter SLTS137A (Revised 4/19/2001) Features compatible with Power Trends’ popular PT4200 series. The PT4210 series has improved load regulation over the PT4200, and is a compatible alternative for both new and existing designs. Applications include Telecom and Datacom systems where both board space and height are a premium. The PT4210 series is offered in both through-hole or SMD-DIP package types with single non-adjustable output voltages of 3.3V, 5V, and 12V. • Wide Input Voltage Range: 38V to 75V • 1,500 VDC Isolation • 6 Pin DIP Package • Low-Profile (8mm) • Pin-compatible with PT4200 Series • No External Components Required 2 • Safety Approvals —Pending Description The PT4210 series of low-power isolated DC-DC converters are pin- Pin-Out Information Ordering Information Package Suffix (PT1234X) PT4212G = 3.3V/1.5A PT4213G = 5V/1.2A PT4214G = 12V/0.6A Case/Pin Configuration Through-Hole Surface Mount A C (For dimensions and PC board layout, see Package Style 910) Package Top View Pin Function +Vout –Vout 1 +V out 2 –V out 8 N/C 11 Remote On/Off * 17 –Vin 18 +V in 1 2 18 17 +Vin –Vin 11 Remote On/Off * PT4210 N/C 8 Specifications C haracteristics (Ta = 25°C unless noted) PT4210 SERIES Symbols Conditions Output Current Io Over Vin range Output Voltage Tolerance ∆Vo Over Vin range, 10%Iomax ≤ I o ≤Iomax, –40°C < T a <85°C Idling Voltage Vo Io = 0A Line Regulation Regline Over Vin range @ max Io Load Regulation Regload Vin =53V 10%Iomax ≤ I o ≤Iomax Current Limit Ilim Over Vin range Min Max Units 0 0 0 — — — 1.5 1.2 0.6 A PT4212 PT4213 PT4214 3.17 4.85 11.5 — — — 3.5 5.25 12.5 V PT4212 PT4213 PT4214 — — — 3.7 5.4 12.7 3.9 5.9 17 V PT4212/4213 PT4214 — — ±20 ±45 — — mV PT4212/13 PT4214 — — ±100 ±150 — — mV PT4212 PT4213 PT4214 — — — 3.0 3.0 1.5 — PT4212 PT4213 PT4214 — — — 2.4 1.5 1.0 — — — A — — 0.5 1.0 — — A mSec PT4212 (3.3V) PT4213 (5.0V) PT4214 ( 12V) Typ A — Isc Over Vin range Inrush Current Iir tir Vin = 53V @ max I o On start-up Input Voltage Range Vin Over I o range 38 — 75 V Vo Ripple/Noise Vn Vin = 53V, Io=Io max — 30 70 mVpp Transient Response ttr Vin =53V, 10%..100%Iomax, 50% load step PT4212/4213 Vo over/undershoot: PT4214 — — — — — — µSec Efficiency η Vin =53V, Io=1.5A, Vin =53V, Io=1.2A, Vin =53V, Io=0.6A, — — — 80 82 84 — — — % Switching Frequency ƒo Over Vin and Io ranges 400 — 500 kHz Operating Temperature Ta Over Vin range -40 — +85 (1) °C Storage Temperature Ts — -40 — +125 °C Mechanical Shock — Per Mil-STD-202F, Method 213B, 6mS half-sine, mounted to a PCB — TBD — G’s Mechanical Vibration — Per Mil-STD-202F, Method 204D, 10-500Hz, mounted to a PCB — TBD — G’s Short Circuit Current PT4212 PT4213 PT4214 200 +150/–250 +250/–500 mV Weight — — — 10 — grams Isolation — — 1500 — — VDC Flammability — Materials meet UL 94V-0 Notes: (1) See SOA curves or consult the factory for the appropriate derating. (2) The maximum output capacitance must not exceed 150µF for the PT4212, 120µF for the PT4213, and 47µF for the PT4214. For technical support and more information, see inside back cover or visit www.ti.com/powertrends Typical Characteristics PT4210 Series —48V 5-7 Watt Low-Profile Isolated DC-DC Converter PT4212 Performance PT4213 Performance (See Note A) Efficiency Vs Output Current Efficiency Vs Output Current VIN 38V 53V 75V 70 90 80 Efficiency - % 60 VIN 38V 53V 75V 70 60 50 0.6 0.9 1.2 1.5 0.4 0.6 Ripple Voltage Vs Output Current 1 1.2 0.1 20 10 30 75V 38V 53V 20 10 0 1.5 0.4 0.6 Iout (A) 0.8 1 1.2 0.1 0.2 0.3 Power Dissipation Vs Output Current 75V 53V 38V 0.6 0.3 1.2 VIN 0.9 75V 53V 38V 0.6 0.3 0 1.5 VIN 0.9 75V 38V 53V 0.6 0.3 0 1.2 0.6 Power Dissipation Vs Output Current Pd - Watts 0.9 0.5 1.5 1.2 VIN Pd - Watts 1.2 0.4 Iout (A) 1.5 0.9 38V 53V 75V 20 Iout (A) Power Dissipation Vs Output Current 0.6 VIN 30 0 0.2 1.5 0.6 10 0 1.2 0.5 40 VIN Ripple - mV 75V 38V 53V Ripple - mV 30 0.4 50 40 0.3 0.3 Ripple Voltage Vs Output Current Ripple Voltage Vs Output Current VIN 0.9 0.2 Iout - (A) 50 40 Ripple - mV 0.8 Iout (A) 50 0.6 53V 38V 75V 70 50 0.2 Iout (A) 0.3 VIN 60 50 0.3 Pd - Watts 80 0 0.2 0.4 0.6 Iout (A) 0.8 1 1.2 0.1 0.2 0.3 Iout (A) 0.4 0.5 0.6 Iout (A) Safe Operating Area, Vin =36–60V Safe Operating Area, Vin =36–60V 90.0 90.0 90.0 80.0 Airflow 70.0 200LFM 120LFM 60LFM Nat conv 60.0 50.0 40.0 30.0 20.0 Ambient Temperature (°C) Safe Operating Area, Vin =36–60V 80.0 70.0 Airflow 60.0 Nat conv 50.0 40.0 30.0 20.0 0.0 0.3 0.6 0.9 Iout (A) 1.2 1.5 Ambient Temperature (°C) Efficiency - % 80 (See Note A) Efficiency Vs Output Current 90 Efficiency - % 90 Ambient Temperature (°C) PT4214 Performance (See Note A) 80.0 70.0 Airflow 60.0 60LFM Nat conv 50.0 40.0 30.0 20.0 0.0 0.2 0.4 0.6 Iout (A) 0.8 1.0 1.2 0.0 0.1 0.2 0.3 0.4 0.5 0.6 Iout (A) Note A: All Characteristic data in the above graphs has been developed from actual products tested at 25°C. This data is considered typical data for the converter. Note B: SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures. For technical support and more information, see inside back cover or visit www.ti.com/powertrends Application Notes PT4210 Series Using the Remote On/Off Function on the PT4210 Isolated 7W DC/DC Converters Applications requiring output voltage On/Off control, the PT4210 DC/DC converter series incorporates a “Remote On/Off” control (pin 11). This feature can be used when there is a requirement for the module to be switched off without removing the applied input source voltage. The converter functions normally with Pin 11 open-circuit, providing a regulated output voltage when a valid source voltage is applied to +Vin (pin 18), with respect to –V in (pin 17). When a low-level 1 ground signal is applied to pin 11, the converter output will be turned off. Figure 1 shows an application schematic, which details the typical use of the Remote On/Off function. Note the discrete transistor (Q1). The control pin has its own internal pull-up, and must be controlled with an opencollector or open-drain device (See notes 2 & 3). Table 1 gives the input requirements. Series Vin Range UVLO Threshold PT4210 38 – 75V 36V ±2V Figure 1 18 + V in -V in 17 Enable Vo/c [Open-Circuit] Iin [pin 11 at –Vin] Remote On/Off* 11 -Vout +V o 2 -V o Note 1 Vdd R1 10k D1 1N4148 # U1a # Min Typ -0.1V 5.0V 3 — 1.0V — Open-Circuit 2 — — 10V — –100µA — Note 1 Max Notes: 1. The Remote On/Off control uses –Vin (pin 17) as its ground reference. All voltages specified are with respect to –Vin. 2. Use an open-collector device (preferably a discrete transistor) for the Remote On/Off input. Do not connect a pull-up resistor directly to pin 11. 3. The Remote On/Off pin may be controlled with devices that have a totem-pole output providing that a blocking diode is used (See Figure 1). The blocking diode is required to prevent current from being injected into On/Off control pin. Note: For TTL devices a pull-up may be required on the cathode side of the blocking diode. This is to guarantee a minimum enable voltage at pin 11 (See Figure 1). or similar low-leakage PIN diode Turn-On Time: In the circuit of Figure 1, turning Q1 on applies a low-voltage to pin 11 and disables the converter output. Correspondingly, turning Q1 off allows pin 11 to be pulled high by an internal pull-up resistor. The converter produces a regulated output voltage within 50ms. Although the risetime of the output is short (<1ms), the delay time will vary depending upon the input voltage and the module’s internal timing. Figure 2 shows shows an example of the output response for a PT4213 (5.0V), following the turn-off of Q1 at time t =0. The waveform was measured with a 48Vdc input voltage, and 1.2Adc resistive load. Figure 2 VO (2V/Div) 4. The PT4210 converters incorporate an “Under-Voltage Lockout” (UVLO). The UVLO will keep the module off when the input voltage to the converter is low, regardless of the state of the Remote On/Off control. Table 2 gives the UVLO input voltage thresholds. Table 2; UVLO Thresholds 4 -Vin 1 Q1 BSS138 1 =OFF Table 1; Remote On/Off Control Requirements 1 Disable +Vout PT4210 Note 1 When placed in the “Off” state, the standby current drawn from the input source is typically reduced to less than 1mA. Parameter +Vin delay time 0 5 10 15 time (milli-secs) For technical support and more information, see inside back cover or visit www.ti.com/powertrends 20 25 30 Package Style 910 Suffix A, C (Revised 12/1/2000) PACKAGE INFORMATION AND DIMENSIONS For technical support and more information, see inside back cover or visit www.ti.com/powertrends IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. 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