Rev B CAH Series Single, Dual, and Triple Output Ultra Wide Input Voltage Range Up to 40 Watts DC/DC Converter FEATURES ● Regulated Outputs ● Remote On/Off Control ● Industry Standard Pin-Out ● 500VDC Minimum I/O Isolation ● Redesigned for Higher Efficiency ● Ultra-Wide Input Voltage Range (4:1) ● Thermal Shutdown with Auto-Recovery ● Current Limiting Short Circuit Protection ● LC Input Filter for low Reflected Ripple Current ● Operating Temperature –40°C to +100°C Baseplate DESCRIPTION The CAH series of single, dual, and triple output dc/dc converters performs over an ultra-wide input voltage range (4:1), providing indefinite short-circuit and over-voltage protection. The CAH series design technology allows for up to 40 watts output power from a 3.0" x 3.0" x 0.55", or 3.6" x 3.0" x 0.55" with baseplate. These current mode control forward converters are designed for improved transient response and reduced stress on switching components. SPECIFICATIONS: CAH Series All specifications apply @ 25°C ambient unless otherwise noted INPUT SPECIFICATIONS PROTECTION SPECIFICATIONS Input Voltage Range .......5V nominal input .................4.5 - 9VDC 24V nominal input.................9 - 36VDC 48V nominal input..............18 - 75 VDC Short Circuit Protection ............................continuous, hiccup mode Input Filter ................................................................ LC input filter Over Voltage Protection..............................................Zener Clamp Current Limiting .....................................................Power Foldback Remote On/Off Control .................................. Open Collector TTL GENERAL SPECIFICATIONS OUTPUT SPECIFICATIONS Efficiency ...................................................................... 85% typical Output Voltage ................................................................ see table External Output Trim ......................................±10% (primary only) Voltage Tolerance .............................. ±1% primary, ±2% auxiliary Switching Frequency .................................................. 300kHz (typ) Isolation Voltage (Input to Output) ............................500VDC (min) Isolation Resistance (Input to Output)..................................500MΩ Output Current ................................................................ see table ENVIRONMENTAL SPECIFICATIONS Output Power .................................................................. see table Operating Temperature (ambient) ....... -40°C to +100°C Baseplate Line Regulation .............................. ±0.5% primary, ±1% auxiliary Storage Temperature............................................ -55°C to +100°C Load Regulation ......................... ±1% single outputs (see note 5) Humidity (non-condensing) ....................................20% to 95% RH Ripple/Noise (20MHz BW) ........................... 1% Vout (see note 7) PHYSICAL SPECIFICATIONS Transient Response ........................... < 200μs to within ±1% Vout Temperature Coefficient.........................................0.02%/°C max. Weight ........................................................... Approximately 7.0 oz Dimensions (L x W x H) ...............................3.0 x 3.0 x 0.55 inches Dimensions with Baseplate (L x W x H) .......3.6 x 3.0 x 0.55 inches Case Material.................. Black coated metal, aluminum baseplate Shielding ......................................................................... six - sided Due to advances in technology, specifications subject to change without notice 01/03/2011 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 1 of 3 Rev B CAH Series Single, Dual, and Triple Output Ultra Wide Input Voltage Range Up to 40 Watts DC/DC Converter MODEL SELECTION GUIDE Model Number CAH5S3.3-25 CAH5S5-25 CAH5S12-25 CAH5S15-25 CAH5S18-25 CAH5D5-25 CAH5D12-25 CAH5D15-25 CAH24S3.3-25 CAH24S5-25 CAH24S5-40 CAH24S12-25 CAH24S12-40 CAH24S15-25 CAH24S15-40 CAH24S18-25 CAH24S18-40 CAH24D12-30 CAH24D12-40 CAH24D15-30 CAH24D15-40 CAH24T12-30 CAH24T15-30 CAH48S3.3-25 CAH48S5-25 CAH48S5-40 CAH48S12-25 CAH48S12-40 CAH48S15-25 CAH48S15-40 CAH48S18-25 CAH48S18-40 CAH48D12-30 CAH48D12-40 CAH48D15-30 CAH48D15-40 CAH48T12-30 CAH48T15-30 Input Voltage Range 5VDC (4.5 – 9 VDC) 24VDC (9 – 36 VDC) 48VDC (18 – 75 VDC) Output Voltage Output Current Over Voltage Set-Point Output Power 3.3 VDC 5 VDC 12 VDC 15 VDC 18 VDC ±5 VDC ±12 VDC ±15 VDC 3.3 VDC 5 VDC 5 VDC 12 VDC 12 VDC 15 VDC 15 VDC 18 VDC 18 VDC ±12 VDC ±12 VDC ±15 VDC ±15 VDC +5 / ±12 VDC +5 / ±15 VDC 3.3 VDC 5 VDC 5 VDC 12 VDC 12 VDC 15 VDC 15 VDC 18 VDC 18 VDC ±12 VDC ±12 VDC ±15 VDC ±15 VDC +5 / ±12 VDC +5 / ±15 VDC 7.58A 5.0A 2.0A 1.6A 1.38A 2.5A 1.04A 0.83A 7.58A 5.0A 8.0A 2.0A 3.3A 1.6A 2.66A 1.38A 2.22A 1.25A 1.66A 1.0A 1.33A 4.0 / ±0.42A 4.0 / ±0.33A 7.58A 5.0A 8.0A 2.0A 3.3A 1.6A 2.66A 1.38A 2.22A 1.25A 1.66A 1.0A 1.33A 4.0 / ±0.42A 4.0 / ±0.33A 5.1 VDC 6.2 VDC 15 VDC 18 VDC 21 VDC 6.2 VDC 15 VDC 18 VDC 5.1 VDC 6.2 VDC 6.2 VDC 15 VDC 15 VDC 18 VDC 18 VDC 21 VDC 21 VDC 15 VDC 15 VDC 18 VDC 18 VDC 6.2 / 15 VDC 6.2 / 18 VDC 5.1 VDC 6.2 VDC 6.2 VDC 15 VDC 15 VDC 18 VDC 18 VDC 21 VDC 21 VDC 15 VDC 15 VDC 18 VDC 18 VDC 6.2 / 15 VDC 6.2 / 18 VDC 25W 25W 24W 24W 25W 25W 25W 25W 25W 25W 40W 24W 40W 24W 40W 25W 40W 30W 40W 30W 40W 30W 30W 25W 25W 40W 24W 40W 24W 40W 25W 40W 30W 40W 30W 40W 30W 30W NOTES 1. 2. 3. 4. 5. All case and pin dimensions reference only unless otherwise noted. Baseplate protrudes 0.02”, two sides. PC pins 0.04” dia x 0.18” long minimum: typical nine places. Pin-to-pin tolerance ±0.01”. Pin dimension tolerance ±0.005”. 10% minimum load required on outputs. Singles: ±1% min. to full load Duals: ±1% min. to full load (balanced) ±5% min. to max load (unbalanced) Triples: ±1% min. to full load (main output) ±5% min to full load aux (unbalanced) 6. Significant capacitive load may inhibit start-up and operation, consult factory. 7. Ripple & Noise is measured with a 0.1μF capacitor across the output. 01/03/2011 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 2 of 3 CAH Series Single, Dual, and Triple Output Ultra Wide Input Voltage Range Up to 40 Watts DC/DC Converter Rev B MECHANICAL DRAWING Unit: inches (mm) WALL INDUSTRIES R DC/DC CONVERTER MODEL NO. EXETER, NH 03833 XXXX 1 2 3 XXXX 4 A A B B A 10 9 8 7 6 A PIN CONNECTIONS 1. All Dimensions are for reference only, unless otherwise noted 2. Pin-to-Pin Tolerance: ±0.01 [0.2] Pin Diameter Tolerance: ±0.005 [0.13] 01/03/2011 PIN 1 2 3 4 5 6 7 8 9 10 SINGLE Remote Case +Vin -Vin No Pin N/C N/C Common +Vout Trim Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 DUAL Remote Case +Vin -Vin No Pin -Vout Common Common +Vout Trim TRIPLE Remote Case +Vin -Vin No Pin Aux. -Vout Aux. +Vout Common +5Vout Trim Page 3 of 3